| /* |
| |
| Broadcom B43 wireless driver |
| IEEE 802.11n HT-PHY support |
| |
| 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/slab.h> |
| |
| #include "b43.h" |
| #include "phy_ht.h" |
| #include "tables_phy_ht.h" |
| #include "radio_2059.h" |
| #include "main.h" |
| |
| /************************************************** |
| * Radio 2059. |
| **************************************************/ |
| |
| static void b43_radio_2059_channel_setup(struct b43_wldev *dev, |
| const struct b43_phy_ht_channeltab_e_radio2059 *e) |
| { |
| u8 i; |
| u16 routing; |
| |
| b43_radio_write(dev, 0x16, e->radio_syn16); |
| b43_radio_write(dev, 0x17, e->radio_syn17); |
| b43_radio_write(dev, 0x22, e->radio_syn22); |
| b43_radio_write(dev, 0x25, e->radio_syn25); |
| b43_radio_write(dev, 0x27, e->radio_syn27); |
| b43_radio_write(dev, 0x28, e->radio_syn28); |
| b43_radio_write(dev, 0x29, e->radio_syn29); |
| b43_radio_write(dev, 0x2c, e->radio_syn2c); |
| b43_radio_write(dev, 0x2d, e->radio_syn2d); |
| b43_radio_write(dev, 0x37, e->radio_syn37); |
| b43_radio_write(dev, 0x41, e->radio_syn41); |
| b43_radio_write(dev, 0x43, e->radio_syn43); |
| b43_radio_write(dev, 0x47, e->radio_syn47); |
| b43_radio_write(dev, 0x4a, e->radio_syn4a); |
| b43_radio_write(dev, 0x58, e->radio_syn58); |
| b43_radio_write(dev, 0x5a, e->radio_syn5a); |
| b43_radio_write(dev, 0x6a, e->radio_syn6a); |
| b43_radio_write(dev, 0x6d, e->radio_syn6d); |
| b43_radio_write(dev, 0x6e, e->radio_syn6e); |
| b43_radio_write(dev, 0x92, e->radio_syn92); |
| b43_radio_write(dev, 0x98, e->radio_syn98); |
| |
| for (i = 0; i < 2; i++) { |
| routing = i ? R2059_RXRX1 : R2059_TXRX0; |
| b43_radio_write(dev, routing | 0x4a, e->radio_rxtx4a); |
| b43_radio_write(dev, routing | 0x58, e->radio_rxtx58); |
| b43_radio_write(dev, routing | 0x5a, e->radio_rxtx5a); |
| b43_radio_write(dev, routing | 0x6a, e->radio_rxtx6a); |
| b43_radio_write(dev, routing | 0x6d, e->radio_rxtx6d); |
| b43_radio_write(dev, routing | 0x6e, e->radio_rxtx6e); |
| b43_radio_write(dev, routing | 0x92, e->radio_rxtx92); |
| b43_radio_write(dev, routing | 0x98, e->radio_rxtx98); |
| } |
| |
| udelay(50); |
| |
| /* Calibration */ |
| b43_radio_mask(dev, 0x2b, ~0x1); |
| b43_radio_mask(dev, 0x2e, ~0x4); |
| b43_radio_set(dev, 0x2e, 0x4); |
| b43_radio_set(dev, 0x2b, 0x1); |
| |
| udelay(300); |
| } |
| |
| static void b43_radio_2059_init(struct b43_wldev *dev) |
| { |
| const u16 routing[] = { R2059_SYN, R2059_TXRX0, R2059_RXRX1 }; |
| const u16 radio_values[3][2] = { |
| { 0x61, 0xE9 }, { 0x69, 0xD5 }, { 0x73, 0x99 }, |
| }; |
| u16 i, j; |
| |
| b43_radio_write(dev, R2059_ALL | 0x51, 0x0070); |
| b43_radio_write(dev, R2059_ALL | 0x5a, 0x0003); |
| |
| for (i = 0; i < ARRAY_SIZE(routing); i++) |
| b43_radio_set(dev, routing[i] | 0x146, 0x3); |
| |
| b43_radio_set(dev, 0x2e, 0x0078); |
| b43_radio_set(dev, 0xc0, 0x0080); |
| msleep(2); |
| b43_radio_mask(dev, 0x2e, ~0x0078); |
| b43_radio_mask(dev, 0xc0, ~0x0080); |
| |
| if (1) { /* FIXME */ |
| b43_radio_set(dev, R2059_RXRX1 | 0x4, 0x1); |
| udelay(10); |
| b43_radio_set(dev, R2059_RXRX1 | 0x0BF, 0x1); |
| b43_radio_maskset(dev, R2059_RXRX1 | 0x19B, 0x3, 0x2); |
| |
| b43_radio_set(dev, R2059_RXRX1 | 0x4, 0x2); |
| udelay(100); |
| b43_radio_mask(dev, R2059_RXRX1 | 0x4, ~0x2); |
| |
| for (i = 0; i < 10000; i++) { |
| if (b43_radio_read(dev, R2059_RXRX1 | 0x145) & 1) { |
| i = 0; |
| break; |
| } |
| udelay(100); |
| } |
| if (i) |
| b43err(dev->wl, "radio 0x945 timeout\n"); |
| |
| b43_radio_mask(dev, R2059_RXRX1 | 0x4, ~0x1); |
| b43_radio_set(dev, 0xa, 0x60); |
| |
| for (i = 0; i < 3; i++) { |
| b43_radio_write(dev, 0x17F, radio_values[i][0]); |
| b43_radio_write(dev, 0x13D, 0x6E); |
| b43_radio_write(dev, 0x13E, radio_values[i][1]); |
| b43_radio_write(dev, 0x13C, 0x55); |
| |
| for (j = 0; j < 10000; j++) { |
| if (b43_radio_read(dev, 0x140) & 2) { |
| j = 0; |
| break; |
| } |
| udelay(500); |
| } |
| if (j) |
| b43err(dev->wl, "radio 0x140 timeout\n"); |
| |
| b43_radio_write(dev, 0x13C, 0x15); |
| } |
| |
| b43_radio_mask(dev, 0x17F, ~0x1); |
| } |
| |
| b43_radio_mask(dev, 0x11, ~0x0008); |
| } |
| |
| /************************************************** |
| * Channel switching ops. |
| **************************************************/ |
| |
| static void b43_phy_ht_channel_setup(struct b43_wldev *dev, |
| const struct b43_phy_ht_channeltab_e_phy *e, |
| struct ieee80211_channel *new_channel) |
| { |
| bool old_band_5ghz; |
| u8 i; |
| |
| old_band_5ghz = b43_phy_read(dev, B43_PHY_HT_BANDCTL) & 0; /* FIXME */ |
| if (new_channel->band == IEEE80211_BAND_5GHZ && !old_band_5ghz) { |
| /* TODO */ |
| } else if (new_channel->band == IEEE80211_BAND_2GHZ && old_band_5ghz) { |
| /* TODO */ |
| } |
| |
| b43_phy_write(dev, B43_PHY_HT_BW1, e->bw1); |
| b43_phy_write(dev, B43_PHY_HT_BW2, e->bw2); |
| b43_phy_write(dev, B43_PHY_HT_BW3, e->bw3); |
| b43_phy_write(dev, B43_PHY_HT_BW4, e->bw4); |
| b43_phy_write(dev, B43_PHY_HT_BW5, e->bw5); |
| b43_phy_write(dev, B43_PHY_HT_BW6, e->bw6); |
| |
| /* TODO: some ops on PHY regs 0x0B0 and 0xC0A */ |
| |
| /* TODO: separated function? */ |
| for (i = 0; i < 3; i++) { |
| u16 mask; |
| u32 tmp = b43_httab_read(dev, B43_HTTAB32(26, 0xE8)); |
| |
| if (0) /* FIXME */ |
| mask = 0x2 << (i * 4); |
| else |
| mask = 0; |
| b43_phy_mask(dev, B43_PHY_EXTG(0x108), mask); |
| |
| b43_httab_write(dev, B43_HTTAB16(7, 0x110 + i), tmp >> 16); |
| b43_httab_write(dev, B43_HTTAB8(13, 0x63 + (i * 4)), |
| tmp & 0xFF); |
| b43_httab_write(dev, B43_HTTAB8(13, 0x73 + (i * 4)), |
| tmp & 0xFF); |
| } |
| |
| b43_phy_write(dev, 0x017e, 0x3830); |
| } |
| |
| static int b43_phy_ht_set_channel(struct b43_wldev *dev, |
| struct ieee80211_channel *channel, |
| enum nl80211_channel_type channel_type) |
| { |
| struct b43_phy *phy = &dev->phy; |
| |
| const struct b43_phy_ht_channeltab_e_radio2059 *chent_r2059 = NULL; |
| |
| if (phy->radio_ver == 0x2059) { |
| chent_r2059 = b43_phy_ht_get_channeltab_e_r2059(dev, |
| channel->center_freq); |
| if (!chent_r2059) |
| return -ESRCH; |
| } else { |
| return -ESRCH; |
| } |
| |
| /* TODO: In case of N-PHY some bandwidth switching goes here */ |
| |
| if (phy->radio_ver == 0x2059) { |
| b43_radio_2059_channel_setup(dev, chent_r2059); |
| b43_phy_ht_channel_setup(dev, &(chent_r2059->phy_regs), |
| channel); |
| } else { |
| return -ESRCH; |
| } |
| |
| return 0; |
| } |
| |
| /************************************************** |
| * Basic PHY ops. |
| **************************************************/ |
| |
| static int b43_phy_ht_op_allocate(struct b43_wldev *dev) |
| { |
| struct b43_phy_ht *phy_ht; |
| |
| phy_ht = kzalloc(sizeof(*phy_ht), GFP_KERNEL); |
| if (!phy_ht) |
| return -ENOMEM; |
| dev->phy.ht = phy_ht; |
| |
| return 0; |
| } |
| |
| static void b43_phy_ht_op_prepare_structs(struct b43_wldev *dev) |
| { |
| struct b43_phy *phy = &dev->phy; |
| struct b43_phy_ht *phy_ht = phy->ht; |
| |
| memset(phy_ht, 0, sizeof(*phy_ht)); |
| } |
| |
| static int b43_phy_ht_op_init(struct b43_wldev *dev) |
| { |
| b43_phy_ht_tables_init(dev); |
| |
| return 0; |
| } |
| |
| static void b43_phy_ht_op_free(struct b43_wldev *dev) |
| { |
| struct b43_phy *phy = &dev->phy; |
| struct b43_phy_ht *phy_ht = phy->ht; |
| |
| kfree(phy_ht); |
| phy->ht = NULL; |
| } |
| |
| /* http://bcm-v4.sipsolutions.net/802.11/Radio/Switch%20Radio */ |
| static void b43_phy_ht_op_software_rfkill(struct b43_wldev *dev, |
| bool blocked) |
| { |
| if (b43_read32(dev, B43_MMIO_MACCTL) & B43_MACCTL_ENABLED) |
| b43err(dev->wl, "MAC not suspended\n"); |
| |
| /* In the following PHY ops we copy wl's dummy behaviour. |
| * TODO: Find out if reads (currently hidden in masks/masksets) are |
| * needed and replace following ops with just writes or w&r. |
| * Note: B43_PHY_HT_RF_CTL1 register is tricky, wrong operation can |
| * cause delayed (!) machine lock up. */ |
| if (blocked) { |
| b43_phy_mask(dev, B43_PHY_HT_RF_CTL1, 0); |
| } else { |
| b43_phy_mask(dev, B43_PHY_HT_RF_CTL1, 0); |
| b43_phy_maskset(dev, B43_PHY_HT_RF_CTL1, 0, 0x1); |
| b43_phy_mask(dev, B43_PHY_HT_RF_CTL1, 0); |
| b43_phy_maskset(dev, B43_PHY_HT_RF_CTL1, 0, 0x2); |
| |
| if (dev->phy.radio_ver == 0x2059) |
| b43_radio_2059_init(dev); |
| else |
| B43_WARN_ON(1); |
| |
| b43_switch_channel(dev, dev->phy.channel); |
| } |
| } |
| |
| static void b43_phy_ht_op_switch_analog(struct b43_wldev *dev, bool on) |
| { |
| if (on) { |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL2, 0x00cd); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL1, 0x0000); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL4, 0x00cd); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL3, 0x0000); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL6, 0x00cd); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL5, 0x0000); |
| } else { |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL1, 0x07ff); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL2, 0x00fd); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL3, 0x07ff); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL4, 0x00fd); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL5, 0x07ff); |
| b43_phy_write(dev, B43_PHY_HT_AFE_CTL6, 0x00fd); |
| } |
| } |
| |
| static int b43_phy_ht_op_switch_channel(struct b43_wldev *dev, |
| unsigned int new_channel) |
| { |
| struct ieee80211_channel *channel = dev->wl->hw->conf.channel; |
| enum nl80211_channel_type channel_type = dev->wl->hw->conf.channel_type; |
| |
| if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) { |
| if ((new_channel < 1) || (new_channel > 14)) |
| return -EINVAL; |
| } else { |
| return -EINVAL; |
| } |
| |
| return b43_phy_ht_set_channel(dev, channel, channel_type); |
| } |
| |
| static unsigned int b43_phy_ht_op_get_default_chan(struct b43_wldev *dev) |
| { |
| if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) |
| return 11; |
| return 36; |
| } |
| |
| /************************************************** |
| * R/W ops. |
| **************************************************/ |
| |
| static u16 b43_phy_ht_op_read(struct b43_wldev *dev, u16 reg) |
| { |
| b43_write16(dev, B43_MMIO_PHY_CONTROL, reg); |
| return b43_read16(dev, B43_MMIO_PHY_DATA); |
| } |
| |
| static void b43_phy_ht_op_write(struct b43_wldev *dev, u16 reg, u16 value) |
| { |
| b43_write16(dev, B43_MMIO_PHY_CONTROL, reg); |
| b43_write16(dev, B43_MMIO_PHY_DATA, value); |
| } |
| |
| static void b43_phy_ht_op_maskset(struct b43_wldev *dev, u16 reg, u16 mask, |
| u16 set) |
| { |
| b43_write16(dev, B43_MMIO_PHY_CONTROL, reg); |
| b43_write16(dev, B43_MMIO_PHY_DATA, |
| (b43_read16(dev, B43_MMIO_PHY_DATA) & mask) | set); |
| } |
| |
| static u16 b43_phy_ht_op_radio_read(struct b43_wldev *dev, u16 reg) |
| { |
| /* HT-PHY needs 0x200 for read access */ |
| reg |= 0x200; |
| |
| b43_write16(dev, B43_MMIO_RADIO24_CONTROL, reg); |
| return b43_read16(dev, B43_MMIO_RADIO24_DATA); |
| } |
| |
| static void b43_phy_ht_op_radio_write(struct b43_wldev *dev, u16 reg, |
| u16 value) |
| { |
| b43_write16(dev, B43_MMIO_RADIO24_CONTROL, reg); |
| b43_write16(dev, B43_MMIO_RADIO24_DATA, value); |
| } |
| |
| static enum b43_txpwr_result |
| b43_phy_ht_op_recalc_txpower(struct b43_wldev *dev, bool ignore_tssi) |
| { |
| return B43_TXPWR_RES_DONE; |
| } |
| |
| static void b43_phy_ht_op_adjust_txpower(struct b43_wldev *dev) |
| { |
| } |
| |
| /************************************************** |
| * PHY ops struct. |
| **************************************************/ |
| |
| const struct b43_phy_operations b43_phyops_ht = { |
| .allocate = b43_phy_ht_op_allocate, |
| .free = b43_phy_ht_op_free, |
| .prepare_structs = b43_phy_ht_op_prepare_structs, |
| .init = b43_phy_ht_op_init, |
| .phy_read = b43_phy_ht_op_read, |
| .phy_write = b43_phy_ht_op_write, |
| .phy_maskset = b43_phy_ht_op_maskset, |
| .radio_read = b43_phy_ht_op_radio_read, |
| .radio_write = b43_phy_ht_op_radio_write, |
| .software_rfkill = b43_phy_ht_op_software_rfkill, |
| .switch_analog = b43_phy_ht_op_switch_analog, |
| .switch_channel = b43_phy_ht_op_switch_channel, |
| .get_default_chan = b43_phy_ht_op_get_default_chan, |
| .recalc_txpower = b43_phy_ht_op_recalc_txpower, |
| .adjust_txpower = b43_phy_ht_op_adjust_txpower, |
| }; |