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/*
Broadcom B43 wireless driver
IEEE 802.11n HT-PHY support
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <linux/slab.h>
#include "b43.h"
#include "phy_ht.h"
#include "tables_phy_ht.h"
#include "radio_2059.h"
#include "main.h"
/**************************************************
* Radio 2059.
**************************************************/
static void b43_radio_2059_channel_setup(struct b43_wldev *dev,
const struct b43_phy_ht_channeltab_e_radio2059 *e)
{
u8 i;
u16 routing;
b43_radio_write(dev, 0x16, e->radio_syn16);
b43_radio_write(dev, 0x17, e->radio_syn17);
b43_radio_write(dev, 0x22, e->radio_syn22);
b43_radio_write(dev, 0x25, e->radio_syn25);
b43_radio_write(dev, 0x27, e->radio_syn27);
b43_radio_write(dev, 0x28, e->radio_syn28);
b43_radio_write(dev, 0x29, e->radio_syn29);
b43_radio_write(dev, 0x2c, e->radio_syn2c);
b43_radio_write(dev, 0x2d, e->radio_syn2d);
b43_radio_write(dev, 0x37, e->radio_syn37);
b43_radio_write(dev, 0x41, e->radio_syn41);
b43_radio_write(dev, 0x43, e->radio_syn43);
b43_radio_write(dev, 0x47, e->radio_syn47);
b43_radio_write(dev, 0x4a, e->radio_syn4a);
b43_radio_write(dev, 0x58, e->radio_syn58);
b43_radio_write(dev, 0x5a, e->radio_syn5a);
b43_radio_write(dev, 0x6a, e->radio_syn6a);
b43_radio_write(dev, 0x6d, e->radio_syn6d);
b43_radio_write(dev, 0x6e, e->radio_syn6e);
b43_radio_write(dev, 0x92, e->radio_syn92);
b43_radio_write(dev, 0x98, e->radio_syn98);
for (i = 0; i < 2; i++) {
routing = i ? R2059_RXRX1 : R2059_TXRX0;
b43_radio_write(dev, routing | 0x4a, e->radio_rxtx4a);
b43_radio_write(dev, routing | 0x58, e->radio_rxtx58);
b43_radio_write(dev, routing | 0x5a, e->radio_rxtx5a);
b43_radio_write(dev, routing | 0x6a, e->radio_rxtx6a);
b43_radio_write(dev, routing | 0x6d, e->radio_rxtx6d);
b43_radio_write(dev, routing | 0x6e, e->radio_rxtx6e);
b43_radio_write(dev, routing | 0x92, e->radio_rxtx92);
b43_radio_write(dev, routing | 0x98, e->radio_rxtx98);
}
udelay(50);
/* Calibration */
b43_radio_mask(dev, 0x2b, ~0x1);
b43_radio_mask(dev, 0x2e, ~0x4);
b43_radio_set(dev, 0x2e, 0x4);
b43_radio_set(dev, 0x2b, 0x1);
udelay(300);
}
static void b43_radio_2059_init(struct b43_wldev *dev)
{
const u16 routing[] = { R2059_SYN, R2059_TXRX0, R2059_RXRX1 };
const u16 radio_values[3][2] = {
{ 0x61, 0xE9 }, { 0x69, 0xD5 }, { 0x73, 0x99 },
};
u16 i, j;
b43_radio_write(dev, R2059_ALL | 0x51, 0x0070);
b43_radio_write(dev, R2059_ALL | 0x5a, 0x0003);
for (i = 0; i < ARRAY_SIZE(routing); i++)
b43_radio_set(dev, routing[i] | 0x146, 0x3);
b43_radio_set(dev, 0x2e, 0x0078);
b43_radio_set(dev, 0xc0, 0x0080);
msleep(2);
b43_radio_mask(dev, 0x2e, ~0x0078);
b43_radio_mask(dev, 0xc0, ~0x0080);
if (1) { /* FIXME */
b43_radio_set(dev, R2059_RXRX1 | 0x4, 0x1);
udelay(10);
b43_radio_set(dev, R2059_RXRX1 | 0x0BF, 0x1);
b43_radio_maskset(dev, R2059_RXRX1 | 0x19B, 0x3, 0x2);
b43_radio_set(dev, R2059_RXRX1 | 0x4, 0x2);
udelay(100);
b43_radio_mask(dev, R2059_RXRX1 | 0x4, ~0x2);
for (i = 0; i < 10000; i++) {
if (b43_radio_read(dev, R2059_RXRX1 | 0x145) & 1) {
i = 0;
break;
}
udelay(100);
}
if (i)
b43err(dev->wl, "radio 0x945 timeout\n");
b43_radio_mask(dev, R2059_RXRX1 | 0x4, ~0x1);
b43_radio_set(dev, 0xa, 0x60);
for (i = 0; i < 3; i++) {
b43_radio_write(dev, 0x17F, radio_values[i][0]);
b43_radio_write(dev, 0x13D, 0x6E);
b43_radio_write(dev, 0x13E, radio_values[i][1]);
b43_radio_write(dev, 0x13C, 0x55);
for (j = 0; j < 10000; j++) {
if (b43_radio_read(dev, 0x140) & 2) {
j = 0;
break;
}
udelay(500);
}
if (j)
b43err(dev->wl, "radio 0x140 timeout\n");
b43_radio_write(dev, 0x13C, 0x15);
}
b43_radio_mask(dev, 0x17F, ~0x1);
}
b43_radio_mask(dev, 0x11, ~0x0008);
}
/**************************************************
* Channel switching ops.
**************************************************/
static void b43_phy_ht_channel_setup(struct b43_wldev *dev,
const struct b43_phy_ht_channeltab_e_phy *e,
struct ieee80211_channel *new_channel)
{
bool old_band_5ghz;
u8 i;
old_band_5ghz = b43_phy_read(dev, B43_PHY_HT_BANDCTL) & 0; /* FIXME */
if (new_channel->band == IEEE80211_BAND_5GHZ && !old_band_5ghz) {
/* TODO */
} else if (new_channel->band == IEEE80211_BAND_2GHZ && old_band_5ghz) {
/* TODO */
}
b43_phy_write(dev, B43_PHY_HT_BW1, e->bw1);
b43_phy_write(dev, B43_PHY_HT_BW2, e->bw2);
b43_phy_write(dev, B43_PHY_HT_BW3, e->bw3);
b43_phy_write(dev, B43_PHY_HT_BW4, e->bw4);
b43_phy_write(dev, B43_PHY_HT_BW5, e->bw5);
b43_phy_write(dev, B43_PHY_HT_BW6, e->bw6);
/* TODO: some ops on PHY regs 0x0B0 and 0xC0A */
/* TODO: separated function? */
for (i = 0; i < 3; i++) {
u16 mask;
u32 tmp = b43_httab_read(dev, B43_HTTAB32(26, 0xE8));
if (0) /* FIXME */
mask = 0x2 << (i * 4);
else
mask = 0;
b43_phy_mask(dev, B43_PHY_EXTG(0x108), mask);
b43_httab_write(dev, B43_HTTAB16(7, 0x110 + i), tmp >> 16);
b43_httab_write(dev, B43_HTTAB8(13, 0x63 + (i * 4)),
tmp & 0xFF);
b43_httab_write(dev, B43_HTTAB8(13, 0x73 + (i * 4)),
tmp & 0xFF);
}
b43_phy_write(dev, 0x017e, 0x3830);
}
static int b43_phy_ht_set_channel(struct b43_wldev *dev,
struct ieee80211_channel *channel,
enum nl80211_channel_type channel_type)
{
struct b43_phy *phy = &dev->phy;
const struct b43_phy_ht_channeltab_e_radio2059 *chent_r2059 = NULL;
if (phy->radio_ver == 0x2059) {
chent_r2059 = b43_phy_ht_get_channeltab_e_r2059(dev,
channel->center_freq);
if (!chent_r2059)
return -ESRCH;
} else {
return -ESRCH;
}
/* TODO: In case of N-PHY some bandwidth switching goes here */
if (phy->radio_ver == 0x2059) {
b43_radio_2059_channel_setup(dev, chent_r2059);
b43_phy_ht_channel_setup(dev, &(chent_r2059->phy_regs),
channel);
} else {
return -ESRCH;
}
return 0;
}
/**************************************************
* Basic PHY ops.
**************************************************/
static int b43_phy_ht_op_allocate(struct b43_wldev *dev)
{
struct b43_phy_ht *phy_ht;
phy_ht = kzalloc(sizeof(*phy_ht), GFP_KERNEL);
if (!phy_ht)
return -ENOMEM;
dev->phy.ht = phy_ht;
return 0;
}
static void b43_phy_ht_op_prepare_structs(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
struct b43_phy_ht *phy_ht = phy->ht;
memset(phy_ht, 0, sizeof(*phy_ht));
}
static int b43_phy_ht_op_init(struct b43_wldev *dev)
{
b43_phy_ht_tables_init(dev);
return 0;
}
static void b43_phy_ht_op_free(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
struct b43_phy_ht *phy_ht = phy->ht;
kfree(phy_ht);
phy->ht = NULL;
}
/* http://bcm-v4.sipsolutions.net/802.11/Radio/Switch%20Radio */
static void b43_phy_ht_op_software_rfkill(struct b43_wldev *dev,
bool blocked)
{
if (b43_read32(dev, B43_MMIO_MACCTL) & B43_MACCTL_ENABLED)
b43err(dev->wl, "MAC not suspended\n");
/* In the following PHY ops we copy wl's dummy behaviour.
* TODO: Find out if reads (currently hidden in masks/masksets) are
* needed and replace following ops with just writes or w&r.
* Note: B43_PHY_HT_RF_CTL1 register is tricky, wrong operation can
* cause delayed (!) machine lock up. */
if (blocked) {
b43_phy_mask(dev, B43_PHY_HT_RF_CTL1, 0);
} else {
b43_phy_mask(dev, B43_PHY_HT_RF_CTL1, 0);
b43_phy_maskset(dev, B43_PHY_HT_RF_CTL1, 0, 0x1);
b43_phy_mask(dev, B43_PHY_HT_RF_CTL1, 0);
b43_phy_maskset(dev, B43_PHY_HT_RF_CTL1, 0, 0x2);
if (dev->phy.radio_ver == 0x2059)
b43_radio_2059_init(dev);
else
B43_WARN_ON(1);
b43_switch_channel(dev, dev->phy.channel);
}
}
static void b43_phy_ht_op_switch_analog(struct b43_wldev *dev, bool on)
{
if (on) {
b43_phy_write(dev, B43_PHY_HT_AFE_CTL2, 0x00cd);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL1, 0x0000);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL4, 0x00cd);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL3, 0x0000);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL6, 0x00cd);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL5, 0x0000);
} else {
b43_phy_write(dev, B43_PHY_HT_AFE_CTL1, 0x07ff);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL2, 0x00fd);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL3, 0x07ff);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL4, 0x00fd);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL5, 0x07ff);
b43_phy_write(dev, B43_PHY_HT_AFE_CTL6, 0x00fd);
}
}
static int b43_phy_ht_op_switch_channel(struct b43_wldev *dev,
unsigned int new_channel)
{
struct ieee80211_channel *channel = dev->wl->hw->conf.channel;
enum nl80211_channel_type channel_type = dev->wl->hw->conf.channel_type;
if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
if ((new_channel < 1) || (new_channel > 14))
return -EINVAL;
} else {
return -EINVAL;
}
return b43_phy_ht_set_channel(dev, channel, channel_type);
}
static unsigned int b43_phy_ht_op_get_default_chan(struct b43_wldev *dev)
{
if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ)
return 11;
return 36;
}
/**************************************************
* R/W ops.
**************************************************/
static u16 b43_phy_ht_op_read(struct b43_wldev *dev, u16 reg)
{
b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
return b43_read16(dev, B43_MMIO_PHY_DATA);
}
static void b43_phy_ht_op_write(struct b43_wldev *dev, u16 reg, u16 value)
{
b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
b43_write16(dev, B43_MMIO_PHY_DATA, value);
}
static void b43_phy_ht_op_maskset(struct b43_wldev *dev, u16 reg, u16 mask,
u16 set)
{
b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
b43_write16(dev, B43_MMIO_PHY_DATA,
(b43_read16(dev, B43_MMIO_PHY_DATA) & mask) | set);
}
static u16 b43_phy_ht_op_radio_read(struct b43_wldev *dev, u16 reg)
{
/* HT-PHY needs 0x200 for read access */
reg |= 0x200;
b43_write16(dev, B43_MMIO_RADIO24_CONTROL, reg);
return b43_read16(dev, B43_MMIO_RADIO24_DATA);
}
static void b43_phy_ht_op_radio_write(struct b43_wldev *dev, u16 reg,
u16 value)
{
b43_write16(dev, B43_MMIO_RADIO24_CONTROL, reg);
b43_write16(dev, B43_MMIO_RADIO24_DATA, value);
}
static enum b43_txpwr_result
b43_phy_ht_op_recalc_txpower(struct b43_wldev *dev, bool ignore_tssi)
{
return B43_TXPWR_RES_DONE;
}
static void b43_phy_ht_op_adjust_txpower(struct b43_wldev *dev)
{
}
/**************************************************
* PHY ops struct.
**************************************************/
const struct b43_phy_operations b43_phyops_ht = {
.allocate = b43_phy_ht_op_allocate,
.free = b43_phy_ht_op_free,
.prepare_structs = b43_phy_ht_op_prepare_structs,
.init = b43_phy_ht_op_init,
.phy_read = b43_phy_ht_op_read,
.phy_write = b43_phy_ht_op_write,
.phy_maskset = b43_phy_ht_op_maskset,
.radio_read = b43_phy_ht_op_radio_read,
.radio_write = b43_phy_ht_op_radio_write,
.software_rfkill = b43_phy_ht_op_software_rfkill,
.switch_analog = b43_phy_ht_op_switch_analog,
.switch_channel = b43_phy_ht_op_switch_channel,
.get_default_chan = b43_phy_ht_op_get_default_chan,
.recalc_txpower = b43_phy_ht_op_recalc_txpower,
.adjust_txpower = b43_phy_ht_op_adjust_txpower,
};
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