diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/b43legacy/radio.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/b43legacy/radio.c | 2126 |
1 files changed, 2126 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/b43legacy/radio.c b/drivers/net/wireless/broadcom/b43legacy/radio.c new file mode 100644 index 000000000..fdf78c10a --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/radio.c @@ -0,0 +1,2126 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Stefano Brivio <stefano.brivio@polimi.it> + Michael Buesch <m@bues.ch> + Danny van Dyk <kugelfang@gentoo.org> + Andreas Jaggi <andreas.jaggi@waterwave.ch> + Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> + + Some parts of the code in this file are derived from the ipw2200 + driver Copyright(c) 2003 - 2004 Intel Corporation. + + +*/ + +#include <linux/delay.h> + +#include "b43legacy.h" +#include "main.h" +#include "phy.h" +#include "radio.h" +#include "ilt.h" + + +/* Table for b43legacy_radio_calibrationvalue() */ +static const u16 rcc_table[16] = { + 0x0002, 0x0003, 0x0001, 0x000F, + 0x0006, 0x0007, 0x0005, 0x000F, + 0x000A, 0x000B, 0x0009, 0x000F, + 0x000E, 0x000F, 0x000D, 0x000F, +}; + +/* Reverse the bits of a 4bit value. + * Example: 1101 is flipped 1011 + */ +static u16 flip_4bit(u16 value) +{ + u16 flipped = 0x0000; + + B43legacy_BUG_ON(!((value & ~0x000F) == 0x0000)); + + flipped |= (value & 0x0001) << 3; + flipped |= (value & 0x0002) << 1; + flipped |= (value & 0x0004) >> 1; + flipped |= (value & 0x0008) >> 3; + + return flipped; +} + +/* Get the freq, as it has to be written to the device. */ +static inline +u16 channel2freq_bg(u8 channel) +{ + /* Frequencies are given as frequencies_bg[index] + 2.4GHz + * Starting with channel 1 + */ + static const u16 frequencies_bg[14] = { + 12, 17, 22, 27, + 32, 37, 42, 47, + 52, 57, 62, 67, + 72, 84, + }; + + if (unlikely(channel < 1 || channel > 14)) { + printk(KERN_INFO "b43legacy: Channel %d is out of range\n", + channel); + dump_stack(); + return 2412; + } + + return frequencies_bg[channel - 1]; +} + +void b43legacy_radio_lock(struct b43legacy_wldev *dev) +{ + u32 status; + + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + B43legacy_WARN_ON(status & B43legacy_MACCTL_RADIOLOCK); + status |= B43legacy_MACCTL_RADIOLOCK; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); + udelay(10); +} + +void b43legacy_radio_unlock(struct b43legacy_wldev *dev) +{ + u32 status; + + b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); /* dummy read */ + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + B43legacy_WARN_ON(!(status & B43legacy_MACCTL_RADIOLOCK)); + status &= ~B43legacy_MACCTL_RADIOLOCK; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); +} + +u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset) +{ + struct b43legacy_phy *phy = &dev->phy; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + if (phy->radio_ver == 0x2053) { + if (offset < 0x70) + offset += 0x80; + else if (offset < 0x80) + offset += 0x70; + } else if (phy->radio_ver == 0x2050) + offset |= 0x80; + else + B43legacy_WARN_ON(1); + break; + case B43legacy_PHYTYPE_G: + offset |= 0x80; + break; + default: + B43legacy_BUG_ON(1); + } + + b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset); + return b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW); +} + +void b43legacy_radio_write16(struct b43legacy_wldev *dev, u16 offset, u16 val) +{ + b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset); + b43legacy_write16(dev, B43legacy_MMIO_RADIO_DATA_LOW, val); +} + +static void b43legacy_set_all_gains(struct b43legacy_wldev *dev, + s16 first, s16 second, s16 third) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 i; + u16 start = 0x08; + u16 end = 0x18; + u16 offset = 0x0400; + u16 tmp; + + if (phy->rev <= 1) { + offset = 0x5000; + start = 0x10; + end = 0x20; + } + + for (i = 0; i < 4; i++) + b43legacy_ilt_write(dev, offset + i, first); + + for (i = start; i < end; i++) + b43legacy_ilt_write(dev, offset + i, second); + + if (third != -1) { + tmp = ((u16)third << 14) | ((u16)third << 6); + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) & 0xBFBF) + | tmp); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) & 0xBFBF) + | tmp); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) & 0xBFBF) + | tmp); + } + b43legacy_dummy_transmission(dev); +} + +static void b43legacy_set_original_gains(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 i; + u16 tmp; + u16 offset = 0x0400; + u16 start = 0x0008; + u16 end = 0x0018; + + if (phy->rev <= 1) { + offset = 0x5000; + start = 0x0010; + end = 0x0020; + } + + for (i = 0; i < 4; i++) { + tmp = (i & 0xFFFC); + tmp |= (i & 0x0001) << 1; + tmp |= (i & 0x0002) >> 1; + + b43legacy_ilt_write(dev, offset + i, tmp); + } + + for (i = start; i < end; i++) + b43legacy_ilt_write(dev, offset + i, i - start); + + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) & 0xBFBF) + | 0x4040); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) & 0xBFBF) + | 0x4040); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) & 0xBFBF) + | 0x4000); + b43legacy_dummy_transmission(dev); +} + +/* Synthetic PU workaround */ +static void b43legacy_synth_pu_workaround(struct b43legacy_wldev *dev, + u8 channel) +{ + struct b43legacy_phy *phy = &dev->phy; + + might_sleep(); + + if (phy->radio_ver != 0x2050 || phy->radio_rev >= 6) + /* We do not need the workaround. */ + return; + + if (channel <= 10) + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel + 4)); + else + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel)); + msleep(1); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel)); +} + +u8 b43legacy_radio_aci_detect(struct b43legacy_wldev *dev, u8 channel) +{ + struct b43legacy_phy *phy = &dev->phy; + u8 ret = 0; + u16 saved; + u16 rssi; + u16 temp; + int i; + int j = 0; + + saved = b43legacy_phy_read(dev, 0x0403); + b43legacy_radio_selectchannel(dev, channel, 0); + b43legacy_phy_write(dev, 0x0403, (saved & 0xFFF8) | 5); + if (phy->aci_hw_rssi) + rssi = b43legacy_phy_read(dev, 0x048A) & 0x3F; + else + rssi = saved & 0x3F; + /* clamp temp to signed 5bit */ + if (rssi > 32) + rssi -= 64; + for (i = 0; i < 100; i++) { + temp = (b43legacy_phy_read(dev, 0x047F) >> 8) & 0x3F; + if (temp > 32) + temp -= 64; + if (temp < rssi) + j++; + if (j >= 20) + ret = 1; + } + b43legacy_phy_write(dev, 0x0403, saved); + + return ret; +} + +u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u8 ret[13] = { 0 }; + unsigned int channel = phy->channel; + unsigned int i; + unsigned int j; + unsigned int start; + unsigned int end; + + if (!((phy->type == B43legacy_PHYTYPE_G) && (phy->rev > 0))) + return 0; + + b43legacy_phy_lock(dev); + b43legacy_radio_lock(dev); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) & 0xFFFC); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + & 0x7FFF); + b43legacy_set_all_gains(dev, 3, 8, 1); + + start = (channel > 5) ? channel - 5 : 1; + end = (channel + 5 < 14) ? channel + 5 : 13; + + for (i = start; i <= end; i++) { + if (abs(channel - i) > 2) + ret[i-1] = b43legacy_radio_aci_detect(dev, i); + } + b43legacy_radio_selectchannel(dev, channel, 0); + b43legacy_phy_write(dev, 0x0802, + (b43legacy_phy_read(dev, 0x0802) & 0xFFFC) + | 0x0003); + b43legacy_phy_write(dev, 0x0403, + b43legacy_phy_read(dev, 0x0403) & 0xFFF8); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + | 0x8000); + b43legacy_set_original_gains(dev); + for (i = 0; i < 13; i++) { + if (!ret[i]) + continue; + end = (i + 5 < 13) ? i + 5 : 13; + for (j = i; j < end; j++) + ret[j] = 1; + } + b43legacy_radio_unlock(dev); + b43legacy_phy_unlock(dev); + + return ret[channel - 1]; +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +void b43legacy_nrssi_hw_write(struct b43legacy_wldev *dev, u16 offset, s16 val) +{ + b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset); + b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_DATA, (u16)val); +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +s16 b43legacy_nrssi_hw_read(struct b43legacy_wldev *dev, u16 offset) +{ + u16 val; + + b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset); + val = b43legacy_phy_read(dev, B43legacy_PHY_NRSSILT_DATA); + + return (s16)val; +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +void b43legacy_nrssi_hw_update(struct b43legacy_wldev *dev, u16 val) +{ + u16 i; + s16 tmp; + + for (i = 0; i < 64; i++) { + tmp = b43legacy_nrssi_hw_read(dev, i); + tmp -= val; + tmp = clamp_val(tmp, -32, 31); + b43legacy_nrssi_hw_write(dev, i, tmp); + } +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +void b43legacy_nrssi_mem_update(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + s16 i; + s16 delta; + s32 tmp; + + delta = 0x1F - phy->nrssi[0]; + for (i = 0; i < 64; i++) { + tmp = (i - delta) * phy->nrssislope; + tmp /= 0x10000; + tmp += 0x3A; + tmp = clamp_val(tmp, 0, 0x3F); + phy->nrssi_lt[i] = tmp; + } +} + +static void b43legacy_calc_nrssi_offset(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup[20] = { 0 }; + s16 v47F; + u16 i; + u16 saved = 0xFFFF; + + backup[0] = b43legacy_phy_read(dev, 0x0001); + backup[1] = b43legacy_phy_read(dev, 0x0811); + backup[2] = b43legacy_phy_read(dev, 0x0812); + backup[3] = b43legacy_phy_read(dev, 0x0814); + backup[4] = b43legacy_phy_read(dev, 0x0815); + backup[5] = b43legacy_phy_read(dev, 0x005A); + backup[6] = b43legacy_phy_read(dev, 0x0059); + backup[7] = b43legacy_phy_read(dev, 0x0058); + backup[8] = b43legacy_phy_read(dev, 0x000A); + backup[9] = b43legacy_phy_read(dev, 0x0003); + backup[10] = b43legacy_radio_read16(dev, 0x007A); + backup[11] = b43legacy_radio_read16(dev, 0x0043); + + b43legacy_phy_write(dev, 0x0429, + b43legacy_phy_read(dev, 0x0429) & 0x7FFF); + b43legacy_phy_write(dev, 0x0001, + (b43legacy_phy_read(dev, 0x0001) & 0x3FFF) + | 0x4000); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x000C); + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) & 0xFFF3) + | 0x0004); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) & ~(0x1 | 0x2)); + if (phy->rev >= 6) { + backup[12] = b43legacy_phy_read(dev, 0x002E); + backup[13] = b43legacy_phy_read(dev, 0x002F); + backup[14] = b43legacy_phy_read(dev, 0x080F); + backup[15] = b43legacy_phy_read(dev, 0x0810); + backup[16] = b43legacy_phy_read(dev, 0x0801); + backup[17] = b43legacy_phy_read(dev, 0x0060); + backup[18] = b43legacy_phy_read(dev, 0x0014); + backup[19] = b43legacy_phy_read(dev, 0x0478); + + b43legacy_phy_write(dev, 0x002E, 0); + b43legacy_phy_write(dev, 0x002F, 0); + b43legacy_phy_write(dev, 0x080F, 0); + b43legacy_phy_write(dev, 0x0810, 0); + b43legacy_phy_write(dev, 0x0478, + b43legacy_phy_read(dev, 0x0478) | 0x0100); + b43legacy_phy_write(dev, 0x0801, + b43legacy_phy_read(dev, 0x0801) | 0x0040); + b43legacy_phy_write(dev, 0x0060, + b43legacy_phy_read(dev, 0x0060) | 0x0040); + b43legacy_phy_write(dev, 0x0014, + b43legacy_phy_read(dev, 0x0014) | 0x0200); + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) | 0x0070); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) | 0x0080); + udelay(30); + + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F == 31) { + for (i = 7; i >= 4; i--) { + b43legacy_radio_write16(dev, 0x007B, i); + udelay(20); + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) + & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F < 31 && saved == 0xFFFF) + saved = i; + } + if (saved == 0xFFFF) + saved = 4; + } else { + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x007F); + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0001); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFE); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x000C); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) | 0x000C); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x0030); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) | 0x0030); + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0x0810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->analog == 0) + b43legacy_phy_write(dev, 0x0003, 0x0122); + else + b43legacy_phy_write(dev, 0x000A, + b43legacy_phy_read(dev, 0x000A) + | 0x2000); + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0004); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFB); + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) & 0xFF9F) + | 0x0040); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x000F); + b43legacy_set_all_gains(dev, 3, 0, 1); + b43legacy_radio_write16(dev, 0x0043, + (b43legacy_radio_read16(dev, 0x0043) + & 0x00F0) | 0x000F); + udelay(30); + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F == -32) { + for (i = 0; i < 4; i++) { + b43legacy_radio_write16(dev, 0x007B, i); + udelay(20); + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> + 8) & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F > -31 && saved == 0xFFFF) + saved = i; + } + if (saved == 0xFFFF) + saved = 3; + } else + saved = 0; + } + b43legacy_radio_write16(dev, 0x007B, saved); + + if (phy->rev >= 6) { + b43legacy_phy_write(dev, 0x002E, backup[12]); + b43legacy_phy_write(dev, 0x002F, backup[13]); + b43legacy_phy_write(dev, 0x080F, backup[14]); + b43legacy_phy_write(dev, 0x0810, backup[15]); + } + b43legacy_phy_write(dev, 0x0814, backup[3]); + b43legacy_phy_write(dev, 0x0815, backup[4]); + b43legacy_phy_write(dev, 0x005A, backup[5]); + b43legacy_phy_write(dev, 0x0059, backup[6]); + b43legacy_phy_write(dev, 0x0058, backup[7]); + b43legacy_phy_write(dev, 0x000A, backup[8]); + b43legacy_phy_write(dev, 0x0003, backup[9]); + b43legacy_radio_write16(dev, 0x0043, backup[11]); + b43legacy_radio_write16(dev, 0x007A, backup[10]); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) | 0x1 | 0x2); + b43legacy_phy_write(dev, 0x0429, + b43legacy_phy_read(dev, 0x0429) | 0x8000); + b43legacy_set_original_gains(dev); + if (phy->rev >= 6) { + b43legacy_phy_write(dev, 0x0801, backup[16]); + b43legacy_phy_write(dev, 0x0060, backup[17]); + b43legacy_phy_write(dev, 0x0014, backup[18]); + b43legacy_phy_write(dev, 0x0478, backup[19]); + } + b43legacy_phy_write(dev, 0x0001, backup[0]); + b43legacy_phy_write(dev, 0x0812, backup[2]); + b43legacy_phy_write(dev, 0x0811, backup[1]); +} + +void b43legacy_calc_nrssi_slope(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup[18] = { 0 }; + u16 tmp; + s16 nrssi0; + s16 nrssi1; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + backup[0] = b43legacy_radio_read16(dev, 0x007A); + backup[1] = b43legacy_radio_read16(dev, 0x0052); + backup[2] = b43legacy_radio_read16(dev, 0x0043); + backup[3] = b43legacy_phy_read(dev, 0x0030); + backup[4] = b43legacy_phy_read(dev, 0x0026); + backup[5] = b43legacy_phy_read(dev, 0x0015); + backup[6] = b43legacy_phy_read(dev, 0x002A); + backup[7] = b43legacy_phy_read(dev, 0x0020); + backup[8] = b43legacy_phy_read(dev, 0x005A); + backup[9] = b43legacy_phy_read(dev, 0x0059); + backup[10] = b43legacy_phy_read(dev, 0x0058); + backup[11] = b43legacy_read16(dev, 0x03E2); + backup[12] = b43legacy_read16(dev, 0x03E6); + backup[13] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + + tmp = b43legacy_radio_read16(dev, 0x007A); + tmp &= (phy->rev >= 5) ? 0x007F : 0x000F; + b43legacy_radio_write16(dev, 0x007A, tmp); + b43legacy_phy_write(dev, 0x0030, 0x00FF); + b43legacy_write16(dev, 0x03EC, 0x7F7F); + b43legacy_phy_write(dev, 0x0026, 0x0000); + b43legacy_phy_write(dev, 0x0015, + b43legacy_phy_read(dev, 0x0015) | 0x0020); + b43legacy_phy_write(dev, 0x002A, 0x08A3); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0080); + + nrssi0 = (s16)b43legacy_phy_read(dev, 0x0027); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x007F); + if (phy->analog >= 2) + b43legacy_write16(dev, 0x03E6, 0x0040); + else if (phy->analog == 0) + b43legacy_write16(dev, 0x03E6, 0x0122); + else + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) & 0x2000); + b43legacy_phy_write(dev, 0x0020, 0x3F3F); + b43legacy_phy_write(dev, 0x0015, 0xF330); + b43legacy_radio_write16(dev, 0x005A, 0x0060); + b43legacy_radio_write16(dev, 0x0043, + b43legacy_radio_read16(dev, 0x0043) + & 0x00F0); + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0x0810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + udelay(20); + + nrssi1 = (s16)b43legacy_phy_read(dev, 0x0027); + b43legacy_phy_write(dev, 0x0030, backup[3]); + b43legacy_radio_write16(dev, 0x007A, backup[0]); + b43legacy_write16(dev, 0x03E2, backup[11]); + b43legacy_phy_write(dev, 0x0026, backup[4]); + b43legacy_phy_write(dev, 0x0015, backup[5]); + b43legacy_phy_write(dev, 0x002A, backup[6]); + b43legacy_synth_pu_workaround(dev, phy->channel); + if (phy->analog != 0) + b43legacy_write16(dev, 0x03F4, backup[13]); + + b43legacy_phy_write(dev, 0x0020, backup[7]); + b43legacy_phy_write(dev, 0x005A, backup[8]); + b43legacy_phy_write(dev, 0x0059, backup[9]); + b43legacy_phy_write(dev, 0x0058, backup[10]); + b43legacy_radio_write16(dev, 0x0052, backup[1]); + b43legacy_radio_write16(dev, 0x0043, backup[2]); + + if (nrssi0 == nrssi1) + phy->nrssislope = 0x00010000; + else + phy->nrssislope = 0x00400000 / (nrssi0 - nrssi1); + + if (nrssi0 <= -4) { + phy->nrssi[0] = nrssi0; + phy->nrssi[1] = nrssi1; + } + break; + case B43legacy_PHYTYPE_G: + if (phy->radio_rev >= 9) + return; + if (phy->radio_rev == 8) + b43legacy_calc_nrssi_offset(dev); + + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + & 0x7FFF); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) & 0xFFFC); + backup[7] = b43legacy_read16(dev, 0x03E2); + b43legacy_write16(dev, 0x03E2, + b43legacy_read16(dev, 0x03E2) | 0x8000); + backup[0] = b43legacy_radio_read16(dev, 0x007A); + backup[1] = b43legacy_radio_read16(dev, 0x0052); + backup[2] = b43legacy_radio_read16(dev, 0x0043); + backup[3] = b43legacy_phy_read(dev, 0x0015); + backup[4] = b43legacy_phy_read(dev, 0x005A); + backup[5] = b43legacy_phy_read(dev, 0x0059); + backup[6] = b43legacy_phy_read(dev, 0x0058); + backup[8] = b43legacy_read16(dev, 0x03E6); + backup[9] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + if (phy->rev >= 3) { + backup[10] = b43legacy_phy_read(dev, 0x002E); + backup[11] = b43legacy_phy_read(dev, 0x002F); + backup[12] = b43legacy_phy_read(dev, 0x080F); + backup[13] = b43legacy_phy_read(dev, + B43legacy_PHY_G_LO_CONTROL); + backup[14] = b43legacy_phy_read(dev, 0x0801); + backup[15] = b43legacy_phy_read(dev, 0x0060); + backup[16] = b43legacy_phy_read(dev, 0x0014); + backup[17] = b43legacy_phy_read(dev, 0x0478); + b43legacy_phy_write(dev, 0x002E, 0); + b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, 0); + switch (phy->rev) { + case 4: case 6: case 7: + b43legacy_phy_write(dev, 0x0478, + b43legacy_phy_read(dev, + 0x0478) | 0x0100); + b43legacy_phy_write(dev, 0x0801, + b43legacy_phy_read(dev, + 0x0801) | 0x0040); + break; + case 3: case 5: + b43legacy_phy_write(dev, 0x0801, + b43legacy_phy_read(dev, + 0x0801) & 0xFFBF); + break; + } + b43legacy_phy_write(dev, 0x0060, + b43legacy_phy_read(dev, 0x0060) + | 0x0040); + b43legacy_phy_write(dev, 0x0014, + b43legacy_phy_read(dev, 0x0014) + | 0x0200); + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0070); + b43legacy_set_all_gains(dev, 0, 8, 0); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x00F7); + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0811, + (b43legacy_phy_read(dev, 0x0811) + & 0xFFCF) | 0x0030); + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) + & 0xFFCF) | 0x0010); + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0080); + udelay(20); + + nrssi0 = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (nrssi0 >= 0x0020) + nrssi0 -= 0x0040; + + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x007F); + if (phy->analog >= 2) + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) + & 0xFF9F) | 0x0040); + + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) | 0x2000); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x000F); + b43legacy_phy_write(dev, 0x0015, 0xF330); + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) + & 0xFFCF) | 0x0020); + b43legacy_phy_write(dev, 0x0811, + (b43legacy_phy_read(dev, 0x0811) + & 0xFFCF) | 0x0020); + } + + b43legacy_set_all_gains(dev, 3, 0, 1); + if (phy->radio_rev == 8) + b43legacy_radio_write16(dev, 0x0043, 0x001F); + else { + tmp = b43legacy_radio_read16(dev, 0x0052) & 0xFF0F; + b43legacy_radio_write16(dev, 0x0052, tmp | 0x0060); + tmp = b43legacy_radio_read16(dev, 0x0043) & 0xFFF0; + b43legacy_radio_write16(dev, 0x0043, tmp | 0x0009); + } + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0x0810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + udelay(20); + nrssi1 = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (nrssi1 >= 0x0020) + nrssi1 -= 0x0040; + if (nrssi0 == nrssi1) + phy->nrssislope = 0x00010000; + else + phy->nrssislope = 0x00400000 / (nrssi0 - nrssi1); + if (nrssi0 >= -4) { + phy->nrssi[0] = nrssi1; + phy->nrssi[1] = nrssi0; + } + if (phy->rev >= 3) { + b43legacy_phy_write(dev, 0x002E, backup[10]); + b43legacy_phy_write(dev, 0x002F, backup[11]); + b43legacy_phy_write(dev, 0x080F, backup[12]); + b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, + backup[13]); + } + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) + & 0xFFCF); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) + & 0xFFCF); + } + + b43legacy_radio_write16(dev, 0x007A, backup[0]); + b43legacy_radio_write16(dev, 0x0052, backup[1]); + b43legacy_radio_write16(dev, 0x0043, backup[2]); + b43legacy_write16(dev, 0x03E2, backup[7]); + b43legacy_write16(dev, 0x03E6, backup[8]); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, backup[9]); + b43legacy_phy_write(dev, 0x0015, backup[3]); + b43legacy_phy_write(dev, 0x005A, backup[4]); + b43legacy_phy_write(dev, 0x0059, backup[5]); + b43legacy_phy_write(dev, 0x0058, backup[6]); + b43legacy_synth_pu_workaround(dev, phy->channel); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) | 0x0003); + b43legacy_set_original_gains(dev); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + | 0x8000); + if (phy->rev >= 3) { + b43legacy_phy_write(dev, 0x0801, backup[14]); + b43legacy_phy_write(dev, 0x0060, backup[15]); + b43legacy_phy_write(dev, 0x0014, backup[16]); + b43legacy_phy_write(dev, 0x0478, backup[17]); + } + b43legacy_nrssi_mem_update(dev); + b43legacy_calc_nrssi_threshold(dev); + break; + default: + B43legacy_BUG_ON(1); + } +} + +void b43legacy_calc_nrssi_threshold(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + s32 threshold; + s32 a; + s32 b; + s16 tmp16; + u16 tmp_u16; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: { + if (phy->radio_ver != 0x2050) + return; + if (!(dev->dev->bus->sprom.boardflags_lo & + B43legacy_BFL_RSSI)) + return; + + if (phy->radio_rev >= 6) { + threshold = (phy->nrssi[1] - phy->nrssi[0]) * 32; + threshold += 20 * (phy->nrssi[0] + 1); + threshold /= 40; + } else + threshold = phy->nrssi[1] - 5; + + threshold = clamp_val(threshold, 0, 0x3E); + b43legacy_phy_read(dev, 0x0020); /* dummy read */ + b43legacy_phy_write(dev, 0x0020, (((u16)threshold) << 8) + | 0x001C); + + if (phy->radio_rev >= 6) { + b43legacy_phy_write(dev, 0x0087, 0x0E0D); + b43legacy_phy_write(dev, 0x0086, 0x0C0B); + b43legacy_phy_write(dev, 0x0085, 0x0A09); + b43legacy_phy_write(dev, 0x0084, 0x0808); + b43legacy_phy_write(dev, 0x0083, 0x0808); + b43legacy_phy_write(dev, 0x0082, 0x0604); + b43legacy_phy_write(dev, 0x0081, 0x0302); + b43legacy_phy_write(dev, 0x0080, 0x0100); + } + break; + } + case B43legacy_PHYTYPE_G: + if (!phy->gmode || + !(dev->dev->bus->sprom.boardflags_lo & + B43legacy_BFL_RSSI)) { + tmp16 = b43legacy_nrssi_hw_read(dev, 0x20); + if (tmp16 >= 0x20) + tmp16 -= 0x40; + if (tmp16 < 3) + b43legacy_phy_write(dev, 0x048A, + (b43legacy_phy_read(dev, + 0x048A) & 0xF000) | 0x09EB); + else + b43legacy_phy_write(dev, 0x048A, + (b43legacy_phy_read(dev, + 0x048A) & 0xF000) | 0x0AED); + } else { + if (phy->interfmode == + B43legacy_RADIO_INTERFMODE_NONWLAN) { + a = 0xE; + b = 0xA; + } else if (!phy->aci_wlan_automatic && + phy->aci_enable) { + a = 0x13; + b = 0x12; + } else { + a = 0xE; + b = 0x11; + } + + a = a * (phy->nrssi[1] - phy->nrssi[0]); + a += (phy->nrssi[0] << 6); + if (a < 32) + a += 31; + else + a += 32; + a = a >> 6; + a = clamp_val(a, -31, 31); + + b = b * (phy->nrssi[1] - phy->nrssi[0]); + b += (phy->nrssi[0] << 6); + if (b < 32) + b += 31; + else + b += 32; + b = b >> 6; + b = clamp_val(b, -31, 31); + + tmp_u16 = b43legacy_phy_read(dev, 0x048A) & 0xF000; + tmp_u16 |= ((u32)b & 0x0000003F); + tmp_u16 |= (((u32)a & 0x0000003F) << 6); + b43legacy_phy_write(dev, 0x048A, tmp_u16); + } + break; + default: + B43legacy_BUG_ON(1); + } +} + +/* Stack implementation to save/restore values from the + * interference mitigation code. + * It is save to restore values in random order. + */ +static void _stack_save(u32 *_stackptr, size_t *stackidx, + u8 id, u16 offset, u16 value) +{ + u32 *stackptr = &(_stackptr[*stackidx]); + + B43legacy_WARN_ON(!((offset & 0xE000) == 0x0000)); + B43legacy_WARN_ON(!((id & 0xF8) == 0x00)); + *stackptr = offset; + *stackptr |= ((u32)id) << 13; + *stackptr |= ((u32)value) << 16; + (*stackidx)++; + B43legacy_WARN_ON(!(*stackidx < B43legacy_INTERFSTACK_SIZE)); +} + +static u16 _stack_restore(u32 *stackptr, + u8 id, u16 offset) +{ + size_t i; + + B43legacy_WARN_ON(!((offset & 0xE000) == 0x0000)); + B43legacy_WARN_ON(!((id & 0xF8) == 0x00)); + for (i = 0; i < B43legacy_INTERFSTACK_SIZE; i++, stackptr++) { + if ((*stackptr & 0x00001FFF) != offset) + continue; + if (((*stackptr & 0x00007000) >> 13) != id) + continue; + return ((*stackptr & 0xFFFF0000) >> 16); + } + B43legacy_BUG_ON(1); + + return 0; +} + +#define phy_stacksave(offset) \ + do { \ + _stack_save(stack, &stackidx, 0x1, (offset), \ + b43legacy_phy_read(dev, (offset))); \ + } while (0) +#define phy_stackrestore(offset) \ + do { \ + b43legacy_phy_write(dev, (offset), \ + _stack_restore(stack, 0x1, \ + (offset))); \ + } while (0) +#define radio_stacksave(offset) \ + do { \ + _stack_save(stack, &stackidx, 0x2, (offset), \ + b43legacy_radio_read16(dev, (offset))); \ + } while (0) +#define radio_stackrestore(offset) \ + do { \ + b43legacy_radio_write16(dev, (offset), \ + _stack_restore(stack, 0x2, \ + (offset))); \ + } while (0) +#define ilt_stacksave(offset) \ + do { \ + _stack_save(stack, &stackidx, 0x3, (offset), \ + b43legacy_ilt_read(dev, (offset))); \ + } while (0) +#define ilt_stackrestore(offset) \ + do { \ + b43legacy_ilt_write(dev, (offset), \ + _stack_restore(stack, 0x3, \ + (offset))); \ + } while (0) + +static void +b43legacy_radio_interference_mitigation_enable(struct b43legacy_wldev *dev, + int mode) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 tmp; + u16 flipped; + u32 tmp32; + size_t stackidx = 0; + u32 *stack = phy->interfstack; + + switch (mode) { + case B43legacy_RADIO_INTERFMODE_NONWLAN: + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) + | 0x0800); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) & ~0x4000); + break; + } + radio_stacksave(0x0078); + tmp = (b43legacy_radio_read16(dev, 0x0078) & 0x001E); + flipped = flip_4bit(tmp); + if (flipped < 10 && flipped >= 8) + flipped = 7; + else if (flipped >= 10) + flipped -= 3; + flipped = flip_4bit(flipped); + flipped = (flipped << 1) | 0x0020; + b43legacy_radio_write16(dev, 0x0078, flipped); + + b43legacy_calc_nrssi_threshold(dev); + + phy_stacksave(0x0406); + b43legacy_phy_write(dev, 0x0406, 0x7E28); + + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) | 0x0800); + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) | 0x1000); + + phy_stacksave(0x04A0); + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) & 0xC0C0) + | 0x0008); + phy_stacksave(0x04A1); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) & 0xC0C0) + | 0x0605); + phy_stacksave(0x04A2); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) & 0xC0C0) + | 0x0204); + phy_stacksave(0x04A8); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) & 0xC0C0) + | 0x0803); + phy_stacksave(0x04AB); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) & 0xC0C0) + | 0x0605); + + phy_stacksave(0x04A7); + b43legacy_phy_write(dev, 0x04A7, 0x0002); + phy_stacksave(0x04A3); + b43legacy_phy_write(dev, 0x04A3, 0x287A); + phy_stacksave(0x04A9); + b43legacy_phy_write(dev, 0x04A9, 0x2027); + phy_stacksave(0x0493); + b43legacy_phy_write(dev, 0x0493, 0x32F5); + phy_stacksave(0x04AA); + b43legacy_phy_write(dev, 0x04AA, 0x2027); + phy_stacksave(0x04AC); + b43legacy_phy_write(dev, 0x04AC, 0x32F5); + break; + case B43legacy_RADIO_INTERFMODE_MANUALWLAN: + if (b43legacy_phy_read(dev, 0x0033) & 0x0800) + break; + + phy->aci_enable = true; + + phy_stacksave(B43legacy_PHY_RADIO_BITFIELD); + phy_stacksave(B43legacy_PHY_G_CRS); + if (phy->rev < 2) + phy_stacksave(0x0406); + else { + phy_stacksave(0x04C0); + phy_stacksave(0x04C1); + } + phy_stacksave(0x0033); + phy_stacksave(0x04A7); + phy_stacksave(0x04A3); + phy_stacksave(0x04A9); + phy_stacksave(0x04AA); + phy_stacksave(0x04AC); + phy_stacksave(0x0493); + phy_stacksave(0x04A1); + phy_stacksave(0x04A0); + phy_stacksave(0x04A2); + phy_stacksave(0x048A); + phy_stacksave(0x04A8); + phy_stacksave(0x04AB); + if (phy->rev == 2) { + phy_stacksave(0x04AD); + phy_stacksave(0x04AE); + } else if (phy->rev >= 3) { + phy_stacksave(0x04AD); + phy_stacksave(0x0415); + phy_stacksave(0x0416); + phy_stacksave(0x0417); + ilt_stacksave(0x1A00 + 0x2); + ilt_stacksave(0x1A00 + 0x3); + } + phy_stacksave(0x042B); + phy_stacksave(0x048C); + + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) & ~0x1000); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + (b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) + & 0xFFFC) | 0x0002); + + b43legacy_phy_write(dev, 0x0033, 0x0800); + b43legacy_phy_write(dev, 0x04A3, 0x2027); + b43legacy_phy_write(dev, 0x04A9, 0x1CA8); + b43legacy_phy_write(dev, 0x0493, 0x287A); + b43legacy_phy_write(dev, 0x04AA, 0x1CA8); + b43legacy_phy_write(dev, 0x04AC, 0x287A); + + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) + & 0xFFC0) | 0x001A); + b43legacy_phy_write(dev, 0x04A7, 0x000D); + + if (phy->rev < 2) + b43legacy_phy_write(dev, 0x0406, 0xFF0D); + else if (phy->rev == 2) { + b43legacy_phy_write(dev, 0x04C0, 0xFFFF); + b43legacy_phy_write(dev, 0x04C1, 0x00A9); + } else { + b43legacy_phy_write(dev, 0x04C0, 0x00C1); + b43legacy_phy_write(dev, 0x04C1, 0x0059); + } + + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) + & 0xC0FF) | 0x1800); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) + & 0xFFC0) | 0x0015); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xCFFF) | 0x1000); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xF0FF) | 0x0A00); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xCFFF) | 0x1000); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xF0FF) | 0x0800); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xFFCF) | 0x0010); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xFFF0) | 0x0005); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xFFCF) | 0x0010); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xFFF0) | 0x0006); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) + & 0xF0FF) | 0x0800); + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) + & 0xF0FF) | 0x0500); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) + & 0xFFF0) | 0x000B); + + if (phy->rev >= 3) { + b43legacy_phy_write(dev, 0x048A, + b43legacy_phy_read(dev, 0x048A) + & ~0x8000); + b43legacy_phy_write(dev, 0x0415, + (b43legacy_phy_read(dev, 0x0415) + & 0x8000) | 0x36D8); + b43legacy_phy_write(dev, 0x0416, + (b43legacy_phy_read(dev, 0x0416) + & 0x8000) | 0x36D8); + b43legacy_phy_write(dev, 0x0417, + (b43legacy_phy_read(dev, 0x0417) + & 0xFE00) | 0x016D); + } else { + b43legacy_phy_write(dev, 0x048A, + b43legacy_phy_read(dev, 0x048A) + | 0x1000); + b43legacy_phy_write(dev, 0x048A, + (b43legacy_phy_read(dev, 0x048A) + & 0x9FFF) | 0x2000); + tmp32 = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET); + if (!(tmp32 & 0x800)) { + tmp32 |= 0x800; + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + tmp32); + } + } + if (phy->rev >= 2) + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) + | 0x0800); + b43legacy_phy_write(dev, 0x048C, + (b43legacy_phy_read(dev, 0x048C) + & 0xF0FF) | 0x0200); + if (phy->rev == 2) { + b43legacy_phy_write(dev, 0x04AE, + (b43legacy_phy_read(dev, 0x04AE) + & 0xFF00) | 0x007F); + b43legacy_phy_write(dev, 0x04AD, + (b43legacy_phy_read(dev, 0x04AD) + & 0x00FF) | 0x1300); + } else if (phy->rev >= 6) { + b43legacy_ilt_write(dev, 0x1A00 + 0x3, 0x007F); + b43legacy_ilt_write(dev, 0x1A00 + 0x2, 0x007F); + b43legacy_phy_write(dev, 0x04AD, + b43legacy_phy_read(dev, 0x04AD) + & 0x00FF); + } + b43legacy_calc_nrssi_slope(dev); + break; + default: + B43legacy_BUG_ON(1); + } +} + +static void +b43legacy_radio_interference_mitigation_disable(struct b43legacy_wldev *dev, + int mode) +{ + struct b43legacy_phy *phy = &dev->phy; + u32 tmp32; + u32 *stack = phy->interfstack; + + switch (mode) { + case B43legacy_RADIO_INTERFMODE_NONWLAN: + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) + & ~0x0800); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) | 0x4000); + break; + } + phy_stackrestore(0x0078); + b43legacy_calc_nrssi_threshold(dev); + phy_stackrestore(0x0406); + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) & ~0x0800); + if (!dev->bad_frames_preempt) + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) + & ~(1 << 11)); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + | 0x4000); + phy_stackrestore(0x04A0); + phy_stackrestore(0x04A1); + phy_stackrestore(0x04A2); + phy_stackrestore(0x04A8); + phy_stackrestore(0x04AB); + phy_stackrestore(0x04A7); + phy_stackrestore(0x04A3); + phy_stackrestore(0x04A9); + phy_stackrestore(0x0493); + phy_stackrestore(0x04AA); + phy_stackrestore(0x04AC); + break; + case B43legacy_RADIO_INTERFMODE_MANUALWLAN: + if (!(b43legacy_phy_read(dev, 0x0033) & 0x0800)) + break; + + phy->aci_enable = false; + + phy_stackrestore(B43legacy_PHY_RADIO_BITFIELD); + phy_stackrestore(B43legacy_PHY_G_CRS); + phy_stackrestore(0x0033); + phy_stackrestore(0x04A3); + phy_stackrestore(0x04A9); + phy_stackrestore(0x0493); + phy_stackrestore(0x04AA); + phy_stackrestore(0x04AC); + phy_stackrestore(0x04A0); + phy_stackrestore(0x04A7); + if (phy->rev >= 2) { + phy_stackrestore(0x04C0); + phy_stackrestore(0x04C1); + } else + phy_stackrestore(0x0406); + phy_stackrestore(0x04A1); + phy_stackrestore(0x04AB); + phy_stackrestore(0x04A8); + if (phy->rev == 2) { + phy_stackrestore(0x04AD); + phy_stackrestore(0x04AE); + } else if (phy->rev >= 3) { + phy_stackrestore(0x04AD); + phy_stackrestore(0x0415); + phy_stackrestore(0x0416); + phy_stackrestore(0x0417); + ilt_stackrestore(0x1A00 + 0x2); + ilt_stackrestore(0x1A00 + 0x3); + } + phy_stackrestore(0x04A2); + phy_stackrestore(0x04A8); + phy_stackrestore(0x042B); + phy_stackrestore(0x048C); + tmp32 = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET); + if (tmp32 & 0x800) { + tmp32 &= ~0x800; + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + tmp32); + } + b43legacy_calc_nrssi_slope(dev); + break; + default: + B43legacy_BUG_ON(1); + } +} + +#undef phy_stacksave +#undef phy_stackrestore +#undef radio_stacksave +#undef radio_stackrestore +#undef ilt_stacksave +#undef ilt_stackrestore + +int b43legacy_radio_set_interference_mitigation(struct b43legacy_wldev *dev, + int mode) +{ + struct b43legacy_phy *phy = &dev->phy; + int currentmode; + + if ((phy->type != B43legacy_PHYTYPE_G) || + (phy->rev == 0) || (!phy->gmode)) + return -ENODEV; + + phy->aci_wlan_automatic = false; + switch (mode) { + case B43legacy_RADIO_INTERFMODE_AUTOWLAN: + phy->aci_wlan_automatic = true; + if (phy->aci_enable) + mode = B43legacy_RADIO_INTERFMODE_MANUALWLAN; + else + mode = B43legacy_RADIO_INTERFMODE_NONE; + break; + case B43legacy_RADIO_INTERFMODE_NONE: + case B43legacy_RADIO_INTERFMODE_NONWLAN: + case B43legacy_RADIO_INTERFMODE_MANUALWLAN: + break; + default: + return -EINVAL; + } + + currentmode = phy->interfmode; + if (currentmode == mode) + return 0; + if (currentmode != B43legacy_RADIO_INTERFMODE_NONE) + b43legacy_radio_interference_mitigation_disable(dev, + currentmode); + + if (mode == B43legacy_RADIO_INTERFMODE_NONE) { + phy->aci_enable = false; + phy->aci_hw_rssi = false; + } else + b43legacy_radio_interference_mitigation_enable(dev, mode); + phy->interfmode = mode; + + return 0; +} + +u16 b43legacy_radio_calibrationvalue(struct b43legacy_wldev *dev) +{ + u16 reg; + u16 index; + u16 ret; + + reg = b43legacy_radio_read16(dev, 0x0060); + index = (reg & 0x001E) >> 1; + ret = rcc_table[index] << 1; + ret |= (reg & 0x0001); + ret |= 0x0020; + + return ret; +} + +#define LPD(L, P, D) (((L) << 2) | ((P) << 1) | ((D) << 0)) +static u16 b43legacy_get_812_value(struct b43legacy_wldev *dev, u8 lpd) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 loop_or = 0; + u16 adj_loopback_gain = phy->loopback_gain[0]; + u8 loop; + u16 extern_lna_control; + + if (!phy->gmode) + return 0; + if (!has_loopback_gain(phy)) { + if (phy->rev < 7 || !(dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_EXTLNA)) { + switch (lpd) { + case LPD(0, 1, 1): + return 0x0FB2; + case LPD(0, 0, 1): + return 0x00B2; + case LPD(1, 0, 1): + return 0x30B2; + case LPD(1, 0, 0): + return 0x30B3; + default: + B43legacy_BUG_ON(1); + } + } else { + switch (lpd) { + case LPD(0, 1, 1): + return 0x8FB2; + case LPD(0, 0, 1): + return 0x80B2; + case LPD(1, 0, 1): + return 0x20B2; + case LPD(1, 0, 0): + return 0x20B3; + default: + B43legacy_BUG_ON(1); + } + } + } else { + if (phy->radio_rev == 8) + adj_loopback_gain += 0x003E; + else + adj_loopback_gain += 0x0026; + if (adj_loopback_gain >= 0x46) { + adj_loopback_gain -= 0x46; + extern_lna_control = 0x3000; + } else if (adj_loopback_gain >= 0x3A) { + adj_loopback_gain -= 0x3A; + extern_lna_control = 0x2000; + } else if (adj_loopback_gain >= 0x2E) { + adj_loopback_gain -= 0x2E; + extern_lna_control = 0x1000; + } else { + adj_loopback_gain -= 0x10; + extern_lna_control = 0x0000; + } + for (loop = 0; loop < 16; loop++) { + u16 tmp = adj_loopback_gain - 6 * loop; + if (tmp < 6) + break; + } + + loop_or = (loop << 8) | extern_lna_control; + if (phy->rev >= 7 && dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_EXTLNA) { + if (extern_lna_control) + loop_or |= 0x8000; + switch (lpd) { + case LPD(0, 1, 1): + return 0x8F92; + case LPD(0, 0, 1): + return (0x8092 | loop_or); + case LPD(1, 0, 1): + return (0x2092 | loop_or); + case LPD(1, 0, 0): + return (0x2093 | loop_or); + default: + B43legacy_BUG_ON(1); + } + } else { + switch (lpd) { + case LPD(0, 1, 1): + return 0x0F92; + case LPD(0, 0, 1): + case LPD(1, 0, 1): + return (0x0092 | loop_or); + case LPD(1, 0, 0): + return (0x0093 | loop_or); + default: + B43legacy_BUG_ON(1); + } + } + } + return 0; +} + +u16 b43legacy_radio_init2050(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup[21] = { 0 }; + u16 ret; + u16 i; + u16 j; + u32 tmp1 = 0; + u32 tmp2 = 0; + + backup[0] = b43legacy_radio_read16(dev, 0x0043); + backup[14] = b43legacy_radio_read16(dev, 0x0051); + backup[15] = b43legacy_radio_read16(dev, 0x0052); + backup[1] = b43legacy_phy_read(dev, 0x0015); + backup[16] = b43legacy_phy_read(dev, 0x005A); + backup[17] = b43legacy_phy_read(dev, 0x0059); + backup[18] = b43legacy_phy_read(dev, 0x0058); + if (phy->type == B43legacy_PHYTYPE_B) { + backup[2] = b43legacy_phy_read(dev, 0x0030); + backup[3] = b43legacy_read16(dev, 0x03EC); + b43legacy_phy_write(dev, 0x0030, 0x00FF); + b43legacy_write16(dev, 0x03EC, 0x3F3F); + } else { + if (phy->gmode) { + backup[4] = b43legacy_phy_read(dev, 0x0811); + backup[5] = b43legacy_phy_read(dev, 0x0812); + backup[6] = b43legacy_phy_read(dev, 0x0814); + backup[7] = b43legacy_phy_read(dev, 0x0815); + backup[8] = b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS); + backup[9] = b43legacy_phy_read(dev, 0x0802); + b43legacy_phy_write(dev, 0x0814, + (b43legacy_phy_read(dev, 0x0814) + | 0x0003)); + b43legacy_phy_write(dev, 0x0815, + (b43legacy_phy_read(dev, 0x0815) + & 0xFFFC)); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + (b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) & 0x7FFF)); + b43legacy_phy_write(dev, 0x0802, + (b43legacy_phy_read(dev, 0x0802) + & 0xFFFC)); + if (phy->rev > 1) { /* loopback gain enabled */ + backup[19] = b43legacy_phy_read(dev, 0x080F); + backup[20] = b43legacy_phy_read(dev, 0x0810); + if (phy->rev >= 3) + b43legacy_phy_write(dev, 0x080F, + 0xC020); + else + b43legacy_phy_write(dev, 0x080F, + 0x8020); + b43legacy_phy_write(dev, 0x0810, 0x0000); + } + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(0, 1, 1))); + if (phy->rev < 7 || + !(dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_EXTLNA)) + b43legacy_phy_write(dev, 0x0811, 0x01B3); + else + b43legacy_phy_write(dev, 0x0811, 0x09B3); + } + } + b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO, + (b43legacy_read16(dev, B43legacy_MMIO_PHY_RADIO) + | 0x8000)); + backup[10] = b43legacy_phy_read(dev, 0x0035); + b43legacy_phy_write(dev, 0x0035, + (b43legacy_phy_read(dev, 0x0035) & 0xFF7F)); + backup[11] = b43legacy_read16(dev, 0x03E6); + backup[12] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + + /* Initialization */ + if (phy->analog == 0) + b43legacy_write16(dev, 0x03E6, 0x0122); + else { + if (phy->analog >= 2) + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) + & 0xFFBF) | 0x0040); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + (b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) | 0x2000)); + } + + ret = b43legacy_radio_calibrationvalue(dev); + + if (phy->type == B43legacy_PHYTYPE_B) + b43legacy_radio_write16(dev, 0x0078, 0x0026); + + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(0, 1, 1))); + b43legacy_phy_write(dev, 0x0015, 0xBFAF); + b43legacy_phy_write(dev, 0x002B, 0x1403); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(0, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xBFA0); + b43legacy_radio_write16(dev, 0x0051, + (b43legacy_radio_read16(dev, 0x0051) + | 0x0004)); + if (phy->radio_rev == 8) + b43legacy_radio_write16(dev, 0x0043, 0x001F); + else { + b43legacy_radio_write16(dev, 0x0052, 0x0000); + b43legacy_radio_write16(dev, 0x0043, + (b43legacy_radio_read16(dev, 0x0043) + & 0xFFF0) | 0x0009); + } + b43legacy_phy_write(dev, 0x0058, 0x0000); + + for (i = 0; i < 16; i++) { + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0xC810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xEFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 0))); + b43legacy_phy_write(dev, 0x0015, 0xFFF0); + udelay(20); + tmp1 += b43legacy_phy_read(dev, 0x002D); + b43legacy_phy_write(dev, 0x0058, 0x0000); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + } + + tmp1++; + tmp1 >>= 9; + udelay(10); + b43legacy_phy_write(dev, 0x0058, 0x0000); + + for (i = 0; i < 16; i++) { + b43legacy_radio_write16(dev, 0x0078, (flip_4bit(i) << 1) + | 0x0020); + backup[13] = b43legacy_radio_read16(dev, 0x0078); + udelay(10); + for (j = 0; j < 16; j++) { + b43legacy_phy_write(dev, 0x005A, 0x0D80); + b43legacy_phy_write(dev, 0x0059, 0xC810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xEFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 0))); + b43legacy_phy_write(dev, 0x0015, 0xFFF0); + udelay(10); + tmp2 += b43legacy_phy_read(dev, 0x002D); + b43legacy_phy_write(dev, 0x0058, 0x0000); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + } + tmp2++; + tmp2 >>= 8; + if (tmp1 < tmp2) + break; + } + + /* Restore the registers */ + b43legacy_phy_write(dev, 0x0015, backup[1]); + b43legacy_radio_write16(dev, 0x0051, backup[14]); + b43legacy_radio_write16(dev, 0x0052, backup[15]); + b43legacy_radio_write16(dev, 0x0043, backup[0]); + b43legacy_phy_write(dev, 0x005A, backup[16]); + b43legacy_phy_write(dev, 0x0059, backup[17]); + b43legacy_phy_write(dev, 0x0058, backup[18]); + b43legacy_write16(dev, 0x03E6, backup[11]); + if (phy->analog != 0) + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, backup[12]); + b43legacy_phy_write(dev, 0x0035, backup[10]); + b43legacy_radio_selectchannel(dev, phy->channel, 1); + if (phy->type == B43legacy_PHYTYPE_B) { + b43legacy_phy_write(dev, 0x0030, backup[2]); + b43legacy_write16(dev, 0x03EC, backup[3]); + } else { + if (phy->gmode) { + b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO, + (b43legacy_read16(dev, + B43legacy_MMIO_PHY_RADIO) & 0x7FFF)); + b43legacy_phy_write(dev, 0x0811, backup[4]); + b43legacy_phy_write(dev, 0x0812, backup[5]); + b43legacy_phy_write(dev, 0x0814, backup[6]); + b43legacy_phy_write(dev, 0x0815, backup[7]); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + backup[8]); + b43legacy_phy_write(dev, 0x0802, backup[9]); + if (phy->rev > 1) { + b43legacy_phy_write(dev, 0x080F, backup[19]); + b43legacy_phy_write(dev, 0x0810, backup[20]); + } + } + } + if (i >= 15) + ret = backup[13]; + + return ret; +} + +static inline +u16 freq_r3A_value(u16 frequency) +{ + u16 value; + + if (frequency < 5091) + value = 0x0040; + else if (frequency < 5321) + value = 0x0000; + else if (frequency < 5806) + value = 0x0080; + else + value = 0x0040; + + return value; +} + +int b43legacy_radio_selectchannel(struct b43legacy_wldev *dev, + u8 channel, + int synthetic_pu_workaround) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (channel == 0xFF) { + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + channel = B43legacy_RADIO_DEFAULT_CHANNEL_BG; + break; + default: + B43legacy_WARN_ON(1); + } + } + +/* TODO: Check if channel is valid - return -EINVAL if not */ + if (synthetic_pu_workaround) + b43legacy_synth_pu_workaround(dev, channel); + + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel)); + + if (channel == 14) { + if (dev->dev->bus->sprom.country_code == 5) /* JAPAN) */ + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + b43legacy_shm_read32(dev, + B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET) + & ~(1 << 7)); + else + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + b43legacy_shm_read32(dev, + B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET) + | (1 << 7)); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) | (1 << 11)); + } else + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) & 0xF7BF); + + phy->channel = channel; + /*XXX: Using the longer of 2 timeouts (8000 vs 2000 usecs). Specs states + * that 2000 usecs might suffice. */ + msleep(8); + + return 0; +} + +void b43legacy_radio_set_txantenna(struct b43legacy_wldev *dev, u32 val) +{ + u16 tmp; + + val <<= 8; + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0022) & 0xFCFF; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0022, tmp | val); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x03A8) & 0xFCFF; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x03A8, tmp | val); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0054) & 0xFCFF; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0054, tmp | val); +} + +/* http://bcm-specs.sipsolutions.net/TX_Gain_Base_Band */ +static u16 b43legacy_get_txgain_base_band(u16 txpower) +{ + u16 ret; + + B43legacy_WARN_ON(txpower > 63); + + if (txpower >= 54) + ret = 2; + else if (txpower >= 49) + ret = 4; + else if (txpower >= 44) + ret = 5; + else + ret = 6; + + return ret; +} + +/* http://bcm-specs.sipsolutions.net/TX_Gain_Radio_Frequency_Power_Amplifier */ +static u16 b43legacy_get_txgain_freq_power_amp(u16 txpower) +{ + u16 ret; + + B43legacy_WARN_ON(txpower > 63); + + if (txpower >= 32) + ret = 0; + else if (txpower >= 25) + ret = 1; + else if (txpower >= 20) + ret = 2; + else if (txpower >= 12) + ret = 3; + else + ret = 4; + + return ret; +} + +/* http://bcm-specs.sipsolutions.net/TX_Gain_Digital_Analog_Converter */ +static u16 b43legacy_get_txgain_dac(u16 txpower) +{ + u16 ret; + + B43legacy_WARN_ON(txpower > 63); + + if (txpower >= 54) + ret = txpower - 53; + else if (txpower >= 49) + ret = txpower - 42; + else if (txpower >= 44) + ret = txpower - 37; + else if (txpower >= 32) + ret = txpower - 32; + else if (txpower >= 25) + ret = txpower - 20; + else if (txpower >= 20) + ret = txpower - 13; + else if (txpower >= 12) + ret = txpower - 8; + else + ret = txpower; + + return ret; +} + +void b43legacy_radio_set_txpower_a(struct b43legacy_wldev *dev, u16 txpower) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 pamp; + u16 base; + u16 dac; + u16 ilt; + + txpower = clamp_val(txpower, 0, 63); + + pamp = b43legacy_get_txgain_freq_power_amp(txpower); + pamp <<= 5; + pamp &= 0x00E0; + b43legacy_phy_write(dev, 0x0019, pamp); + + base = b43legacy_get_txgain_base_band(txpower); + base &= 0x000F; + b43legacy_phy_write(dev, 0x0017, base | 0x0020); + + ilt = b43legacy_ilt_read(dev, 0x3001); + ilt &= 0x0007; + + dac = b43legacy_get_txgain_dac(txpower); + dac <<= 3; + dac |= ilt; + + b43legacy_ilt_write(dev, 0x3001, dac); + + phy->txpwr_offset = txpower; + + /* TODO: FuncPlaceholder (Adjust BB loft cancel) */ +} + +void b43legacy_radio_set_txpower_bg(struct b43legacy_wldev *dev, + u16 baseband_attenuation, + u16 radio_attenuation, + u16 txpower) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (baseband_attenuation == 0xFFFF) + baseband_attenuation = phy->bbatt; + if (radio_attenuation == 0xFFFF) + radio_attenuation = phy->rfatt; + if (txpower == 0xFFFF) + txpower = phy->txctl1; + phy->bbatt = baseband_attenuation; + phy->rfatt = radio_attenuation; + phy->txctl1 = txpower; + + B43legacy_WARN_ON(baseband_attenuation > 11); + if (phy->radio_rev < 6) + B43legacy_WARN_ON(radio_attenuation > 9); + else + B43legacy_WARN_ON(radio_attenuation > 31); + B43legacy_WARN_ON(txpower > 7); + + b43legacy_phy_set_baseband_attenuation(dev, baseband_attenuation); + b43legacy_radio_write16(dev, 0x0043, radio_attenuation); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0064, + radio_attenuation); + if (phy->radio_ver == 0x2050) + b43legacy_radio_write16(dev, 0x0052, + (b43legacy_radio_read16(dev, 0x0052) + & ~0x0070) | ((txpower << 4) & 0x0070)); + /* FIXME: The spec is very weird and unclear here. */ + if (phy->type == B43legacy_PHYTYPE_G) + b43legacy_phy_lo_adjust(dev, 0); +} + +u16 b43legacy_default_baseband_attenuation(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (phy->radio_ver == 0x2050 && phy->radio_rev < 6) + return 0; + return 2; +} + +u16 b43legacy_default_radio_attenuation(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 att = 0xFFFF; + + switch (phy->radio_ver) { + case 0x2053: + switch (phy->radio_rev) { + case 1: + att = 6; + break; + } + break; + case 0x2050: + switch (phy->radio_rev) { + case 0: + att = 5; + break; + case 1: + if (phy->type == B43legacy_PHYTYPE_G) { + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421 && + dev->dev->bus->sprom.board_rev >= 30) + att = 3; + else if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x416) + att = 3; + else + att = 1; + } else { + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421 && + dev->dev->bus->sprom.board_rev >= 30) + att = 7; + else + att = 6; + } + break; + case 2: + if (phy->type == B43legacy_PHYTYPE_G) { + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421 && + dev->dev->bus->sprom.board_rev >= 30) + att = 3; + else if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == + 0x416) + att = 5; + else if (dev->dev->bus->chip_id == 0x4320) + att = 4; + else + att = 3; + } else + att = 6; + break; + case 3: + att = 5; + break; + case 4: + case 5: + att = 1; + break; + case 6: + case 7: + att = 5; + break; + case 8: + att = 0x1A; + break; + case 9: + default: + att = 5; + } + } + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421) { + if (dev->dev->bus->sprom.board_rev < 0x43) + att = 2; + else if (dev->dev->bus->sprom.board_rev < 0x51) + att = 3; + } + if (att == 0xFFFF) + att = 5; + + return att; +} + +u16 b43legacy_default_txctl1(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (phy->radio_ver != 0x2050) + return 0; + if (phy->radio_rev == 1) + return 3; + if (phy->radio_rev < 6) + return 2; + if (phy->radio_rev == 8) + return 1; + return 0; +} + +void b43legacy_radio_turn_on(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + int err; + u8 channel; + + might_sleep(); + + if (phy->radio_on) + return; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + b43legacy_phy_write(dev, 0x0015, 0x8000); + b43legacy_phy_write(dev, 0x0015, 0xCC00); + b43legacy_phy_write(dev, 0x0015, + (phy->gmode ? 0x00C0 : 0x0000)); + if (phy->radio_off_context.valid) { + /* Restore the RFover values. */ + b43legacy_phy_write(dev, B43legacy_PHY_RFOVER, + phy->radio_off_context.rfover); + b43legacy_phy_write(dev, B43legacy_PHY_RFOVERVAL, + phy->radio_off_context.rfoverval); + phy->radio_off_context.valid = false; + } + channel = phy->channel; + err = b43legacy_radio_selectchannel(dev, + B43legacy_RADIO_DEFAULT_CHANNEL_BG, 1); + err |= b43legacy_radio_selectchannel(dev, channel, 0); + B43legacy_WARN_ON(err); + break; + default: + B43legacy_BUG_ON(1); + } + phy->radio_on = true; +} + +void b43legacy_radio_turn_off(struct b43legacy_wldev *dev, bool force) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (!phy->radio_on && !force) + return; + + if (phy->type == B43legacy_PHYTYPE_G && dev->dev->id.revision >= 5) { + u16 rfover, rfoverval; + + rfover = b43legacy_phy_read(dev, B43legacy_PHY_RFOVER); + rfoverval = b43legacy_phy_read(dev, B43legacy_PHY_RFOVERVAL); + if (!force) { + phy->radio_off_context.rfover = rfover; + phy->radio_off_context.rfoverval = rfoverval; + phy->radio_off_context.valid = true; + } + b43legacy_phy_write(dev, B43legacy_PHY_RFOVER, rfover | 0x008C); + b43legacy_phy_write(dev, B43legacy_PHY_RFOVERVAL, + rfoverval & 0xFF73); + } else + b43legacy_phy_write(dev, 0x0015, 0xAA00); + phy->radio_on = false; + b43legacydbg(dev->wl, "Radio initialized\n"); +} + +void b43legacy_radio_clear_tssi(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0058, + 0x7F7F); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x005a, + 0x7F7F); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0070, + 0x7F7F); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0072, + 0x7F7F); + break; + } +} |