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linux/drivers/net/wireless/broadcom/b43legacy/radio.c
Colin Ian King e3ae1c7720 b43legacy: fix unitialized reads of ret by initializing the array to zero 
The u8 char array ret is not being initialized and elements outside
the range start to end contain just garbage values from the stack.
This results in a later scan of the array to read potentially
uninitialized values.  Fix this by initializing the array to zero.
This seems to have been an issue since the very first commit.

Detected by CoverityScan CID#139653 ("Uninitialized scalar variable")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Michael Buesch <m@bues.ch>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-09-20 15:41:08 +03:00

2144 lines
58 KiB
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/*
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.
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 "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);
mmiowb();
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);
mmiowb();
}
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);
mmiowb();
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 > 0) ? 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];
}
/* http://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);
mmiowb();
b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_DATA, (u16)val);
}
/* http://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;
}
/* http://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);
}
}
/* http://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;
}
}
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