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rt2500usb.c
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rt2500usb.c
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/*
Copyright (C) 2004 - 2009 Ivo van Doorn <[email protected]>
<http://rt2x00.serialmonkey.com>
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; if not, write to the
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
Module: rt2500usb
Abstract: rt2500usb device specific routines.
Supported chipsets: RT2570.
*/
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include "rt2x00.h"
#include "rt2x00usb.h"
#include "rt2500usb.h"
/*
* Allow hardware encryption to be disabled.
*/
static bool modparam_nohwcrypt;
module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
/*
* Register access.
* All access to the CSR registers will go through the methods
* rt2500usb_register_read and rt2500usb_register_write.
* BBP and RF register require indirect register access,
* and use the CSR registers BBPCSR and RFCSR to achieve this.
* These indirect registers work with busy bits,
* and we will try maximal REGISTER_BUSY_COUNT times to access
* the register while taking a REGISTER_BUSY_DELAY us delay
* between each attampt. When the busy bit is still set at that time,
* the access attempt is considered to have failed,
* and we will print an error.
* If the csr_mutex is already held then the _lock variants must
* be used instead.
*/
static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
u16 *value)
{
__le16 reg;
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
USB_VENDOR_REQUEST_IN, offset,
®, sizeof(reg), REGISTER_TIMEOUT);
*value = le16_to_cpu(reg);
}
static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
u16 *value)
{
__le16 reg;
rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
USB_VENDOR_REQUEST_IN, offset,
®, sizeof(reg), REGISTER_TIMEOUT);
*value = le16_to_cpu(reg);
}
static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
void *value, const u16 length)
{
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
USB_VENDOR_REQUEST_IN, offset,
value, length,
REGISTER_TIMEOUT16(length));
}
static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
u16 value)
{
__le16 reg = cpu_to_le16(value);
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
USB_VENDOR_REQUEST_OUT, offset,
®, sizeof(reg), REGISTER_TIMEOUT);
}
static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
u16 value)
{
__le16 reg = cpu_to_le16(value);
rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
USB_VENDOR_REQUEST_OUT, offset,
®, sizeof(reg), REGISTER_TIMEOUT);
}
static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
void *value, const u16 length)
{
rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
USB_VENDOR_REQUEST_OUT, offset,
value, length,
REGISTER_TIMEOUT16(length));
}
static int rt2500usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
struct rt2x00_field16 field,
u16 *reg)
{
unsigned int i;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2500usb_register_read_lock(rt2x00dev, offset, reg);
if (!rt2x00_get_field16(*reg, field))
return 1;
udelay(REGISTER_BUSY_DELAY);
}
ERROR(rt2x00dev, "Indirect register access failed: "
"offset=0x%.08x, value=0x%.08x\n", offset, *reg);
*reg = ~0;
return 0;
}
#define WAIT_FOR_BBP(__dev, __reg) \
rt2500usb_regbusy_read((__dev), PHY_CSR8, PHY_CSR8_BUSY, (__reg))
#define WAIT_FOR_RF(__dev, __reg) \
rt2500usb_regbusy_read((__dev), PHY_CSR10, PHY_CSR10_RF_BUSY, (__reg))
static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
const unsigned int word, const u8 value)
{
u16 reg;
mutex_lock(&rt2x00dev->csr_mutex);
/*
* Wait until the BBP becomes available, afterwards we
* can safely write the new data into the register.
*/
if (WAIT_FOR_BBP(rt2x00dev, ®)) {
reg = 0;
rt2x00_set_field16(®, PHY_CSR7_DATA, value);
rt2x00_set_field16(®, PHY_CSR7_REG_ID, word);
rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 0);
rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
}
mutex_unlock(&rt2x00dev->csr_mutex);
}
static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u8 *value)
{
u16 reg;
mutex_lock(&rt2x00dev->csr_mutex);
/*
* Wait until the BBP becomes available, afterwards we
* can safely write the read request into the register.
* After the data has been written, we wait until hardware
* returns the correct value, if at any time the register
* doesn't become available in time, reg will be 0xffffffff
* which means we return 0xff to the caller.
*/
if (WAIT_FOR_BBP(rt2x00dev, ®)) {
reg = 0;
rt2x00_set_field16(®, PHY_CSR7_REG_ID, word);
rt2x00_set_field16(®, PHY_CSR7_READ_CONTROL, 1);
rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
if (WAIT_FOR_BBP(rt2x00dev, ®))
rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, ®);
}
*value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
mutex_unlock(&rt2x00dev->csr_mutex);
}
static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
const unsigned int word, const u32 value)
{
u16 reg;
mutex_lock(&rt2x00dev->csr_mutex);
/*
* Wait until the RF becomes available, afterwards we
* can safely write the new data into the register.
*/
if (WAIT_FOR_RF(rt2x00dev, ®)) {
reg = 0;
rt2x00_set_field16(®, PHY_CSR9_RF_VALUE, value);
rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
reg = 0;
rt2x00_set_field16(®, PHY_CSR10_RF_VALUE, value >> 16);
rt2x00_set_field16(®, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
rt2x00_set_field16(®, PHY_CSR10_RF_IF_SELECT, 0);
rt2x00_set_field16(®, PHY_CSR10_RF_BUSY, 1);
rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
rt2x00_rf_write(rt2x00dev, word, value);
}
mutex_unlock(&rt2x00dev->csr_mutex);
}
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
u32 *value)
{
rt2500usb_register_read(rt2x00dev, offset, (u16 *)value);
}
static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
const unsigned int offset,
u32 value)
{
rt2500usb_register_write(rt2x00dev, offset, value);
}
static const struct rt2x00debug rt2500usb_rt2x00debug = {
.owner = THIS_MODULE,
.csr = {
.read = _rt2500usb_register_read,
.write = _rt2500usb_register_write,
.flags = RT2X00DEBUGFS_OFFSET,
.word_base = CSR_REG_BASE,
.word_size = sizeof(u16),
.word_count = CSR_REG_SIZE / sizeof(u16),
},
.eeprom = {
.read = rt2x00_eeprom_read,
.write = rt2x00_eeprom_write,
.word_base = EEPROM_BASE,
.word_size = sizeof(u16),
.word_count = EEPROM_SIZE / sizeof(u16),
},
.bbp = {
.read = rt2500usb_bbp_read,
.write = rt2500usb_bbp_write,
.word_base = BBP_BASE,
.word_size = sizeof(u8),
.word_count = BBP_SIZE / sizeof(u8),
},
.rf = {
.read = rt2x00_rf_read,
.write = rt2500usb_rf_write,
.word_base = RF_BASE,
.word_size = sizeof(u32),
.word_count = RF_SIZE / sizeof(u32),
},
};
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
static int rt2500usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
{
u16 reg;
rt2500usb_register_read(rt2x00dev, MAC_CSR19, ®);
return rt2x00_get_field32(reg, MAC_CSR19_BIT7);
}
#ifdef CONFIG_RT2X00_LIB_LEDS
static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct rt2x00_led *led =
container_of(led_cdev, struct rt2x00_led, led_dev);
unsigned int enabled = brightness != LED_OFF;
u16 reg;
rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, ®);
if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
rt2x00_set_field16(®, MAC_CSR20_LINK, enabled);
else if (led->type == LED_TYPE_ACTIVITY)
rt2x00_set_field16(®, MAC_CSR20_ACTIVITY, enabled);
rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
}
static int rt2500usb_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on,
unsigned long *delay_off)
{
struct rt2x00_led *led =
container_of(led_cdev, struct rt2x00_led, led_dev);
u16 reg;
rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, ®);
rt2x00_set_field16(®, MAC_CSR21_ON_PERIOD, *delay_on);
rt2x00_set_field16(®, MAC_CSR21_OFF_PERIOD, *delay_off);
rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
return 0;
}
static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
struct rt2x00_led *led,
enum led_type type)
{
led->rt2x00dev = rt2x00dev;
led->type = type;
led->led_dev.brightness_set = rt2500usb_brightness_set;
led->led_dev.blink_set = rt2500usb_blink_set;
led->flags = LED_INITIALIZED;
}
#endif /* CONFIG_RT2X00_LIB_LEDS */
/*
* Configuration handlers.
*/
/*
* rt2500usb does not differentiate between shared and pairwise
* keys, so we should use the same function for both key types.
*/
static int rt2500usb_config_key(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_crypto *crypto,
struct ieee80211_key_conf *key)
{
u32 mask;
u16 reg;
enum cipher curr_cipher;
if (crypto->cmd == SET_KEY) {
/*
* Disallow to set WEP key other than with index 0,
* it is known that not work at least on some hardware.
* SW crypto will be used in that case.
*/
if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
key->keyidx != 0)
return -EOPNOTSUPP;
/*
* Pairwise key will always be entry 0, but this
* could collide with a shared key on the same
* position...
*/
mask = TXRX_CSR0_KEY_ID.bit_mask;
rt2500usb_register_read(rt2x00dev, TXRX_CSR0, ®);
curr_cipher = rt2x00_get_field16(reg, TXRX_CSR0_ALGORITHM);
reg &= mask;
if (reg && reg == mask)
return -ENOSPC;
reg = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
key->hw_key_idx += reg ? ffz(reg) : 0;
/*
* Hardware requires that all keys use the same cipher
* (e.g. TKIP-only, AES-only, but not TKIP+AES).
* If this is not the first key, compare the cipher with the
* first one and fall back to SW crypto if not the same.
*/
if (key->hw_key_idx > 0 && crypto->cipher != curr_cipher)
return -EOPNOTSUPP;
rt2500usb_register_multiwrite(rt2x00dev, KEY_ENTRY(key->hw_key_idx),
crypto->key, sizeof(crypto->key));
/*
* The driver does not support the IV/EIV generation
* in hardware. However it demands the data to be provided
* both separately as well as inside the frame.
* We already provided the CONFIG_CRYPTO_COPY_IV to rt2x00lib
* to ensure rt2x00lib will not strip the data from the
* frame after the copy, now we must tell mac80211
* to generate the IV/EIV data.
*/
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
}
/*
* TXRX_CSR0_KEY_ID contains only single-bit fields to indicate
* a particular key is valid.
*/
rt2500usb_register_read(rt2x00dev, TXRX_CSR0, ®);
rt2x00_set_field16(®, TXRX_CSR0_ALGORITHM, crypto->cipher);
rt2x00_set_field16(®, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
mask = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
if (crypto->cmd == SET_KEY)
mask |= 1 << key->hw_key_idx;
else if (crypto->cmd == DISABLE_KEY)
mask &= ~(1 << key->hw_key_idx);
rt2x00_set_field16(®, TXRX_CSR0_KEY_ID, mask);
rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
return 0;
}
static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
const unsigned int filter_flags)
{
u16 reg;
/*
* Start configuration steps.
* Note that the version error will always be dropped
* and broadcast frames will always be accepted since
* there is no filter for it at this time.
*/
rt2500usb_register_read(rt2x00dev, TXRX_CSR2, ®);
rt2x00_set_field16(®, TXRX_CSR2_DROP_CRC,
!(filter_flags & FIF_FCSFAIL));
rt2x00_set_field16(®, TXRX_CSR2_DROP_PHYSICAL,
!(filter_flags & FIF_PLCPFAIL));
rt2x00_set_field16(®, TXRX_CSR2_DROP_CONTROL,
!(filter_flags & FIF_CONTROL));
rt2x00_set_field16(®, TXRX_CSR2_DROP_NOT_TO_ME,
!(filter_flags & FIF_PROMISC_IN_BSS));
rt2x00_set_field16(®, TXRX_CSR2_DROP_TODS,
!(filter_flags & FIF_PROMISC_IN_BSS) &&
!rt2x00dev->intf_ap_count);
rt2x00_set_field16(®, TXRX_CSR2_DROP_VERSION_ERROR, 1);
rt2x00_set_field16(®, TXRX_CSR2_DROP_MULTICAST,
!(filter_flags & FIF_ALLMULTI));
rt2x00_set_field16(®, TXRX_CSR2_DROP_BROADCAST, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
}
static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
struct rt2x00_intf *intf,
struct rt2x00intf_conf *conf,
const unsigned int flags)
{
unsigned int bcn_preload;
u16 reg;
if (flags & CONFIG_UPDATE_TYPE) {
/*
* Enable beacon config
*/
bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
rt2500usb_register_read(rt2x00dev, TXRX_CSR20, ®);
rt2x00_set_field16(®, TXRX_CSR20_OFFSET, bcn_preload >> 6);
rt2x00_set_field16(®, TXRX_CSR20_BCN_EXPECT_WINDOW,
2 * (conf->type != NL80211_IFTYPE_STATION));
rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
/*
* Enable synchronisation.
*/
rt2500usb_register_read(rt2x00dev, TXRX_CSR18, ®);
rt2x00_set_field16(®, TXRX_CSR18_OFFSET, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®);
rt2x00_set_field16(®, TXRX_CSR19_TSF_SYNC, conf->sync);
rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
}
if (flags & CONFIG_UPDATE_MAC)
rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
(3 * sizeof(__le16)));
if (flags & CONFIG_UPDATE_BSSID)
rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
(3 * sizeof(__le16)));
}
static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_erp *erp,
u32 changed)
{
u16 reg;
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
rt2500usb_register_read(rt2x00dev, TXRX_CSR10, ®);
rt2x00_set_field16(®, TXRX_CSR10_AUTORESPOND_PREAMBLE,
!!erp->short_preamble);
rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
}
if (changed & BSS_CHANGED_BASIC_RATES)
rt2500usb_register_write(rt2x00dev, TXRX_CSR11,
erp->basic_rates);
if (changed & BSS_CHANGED_BEACON_INT) {
rt2500usb_register_read(rt2x00dev, TXRX_CSR18, ®);
rt2x00_set_field16(®, TXRX_CSR18_INTERVAL,
erp->beacon_int * 4);
rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time);
rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs);
rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs);
}
}
static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev,
struct antenna_setup *ant)
{
u8 r2;
u8 r14;
u16 csr5;
u16 csr6;
/*
* We should never come here because rt2x00lib is supposed
* to catch this and send us the correct antenna explicitely.
*/
BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
ant->tx == ANTENNA_SW_DIVERSITY);
rt2500usb_bbp_read(rt2x00dev, 2, &r2);
rt2500usb_bbp_read(rt2x00dev, 14, &r14);
rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
/*
* Configure the TX antenna.
*/
switch (ant->tx) {
case ANTENNA_HW_DIVERSITY:
rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
break;
case ANTENNA_A:
rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
break;
case ANTENNA_B:
default:
rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
break;
}
/*
* Configure the RX antenna.
*/
switch (ant->rx) {
case ANTENNA_HW_DIVERSITY:
rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
break;
case ANTENNA_A:
rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
break;
case ANTENNA_B:
default:
rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
break;
}
/*
* RT2525E and RT5222 need to flip TX I/Q
*/
if (rt2x00_rf(rt2x00dev, RF2525E) || rt2x00_rf(rt2x00dev, RF5222)) {
rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
/*
* RT2525E does not need RX I/Q Flip.
*/
if (rt2x00_rf(rt2x00dev, RF2525E))
rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
} else {
rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
}
rt2500usb_bbp_write(rt2x00dev, 2, r2);
rt2500usb_bbp_write(rt2x00dev, 14, r14);
rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
}
static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
struct rf_channel *rf, const int txpower)
{
/*
* Set TXpower.
*/
rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
/*
* For RT2525E we should first set the channel to half band higher.
*/
if (rt2x00_rf(rt2x00dev, RF2525E)) {
static const u32 vals[] = {
0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
0x00000902, 0x00000906
};
rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
if (rf->rf4)
rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
}
rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
if (rf->rf4)
rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
}
static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
const int txpower)
{
u32 rf3;
rt2x00_rf_read(rt2x00dev, 3, &rf3);
rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
rt2500usb_rf_write(rt2x00dev, 3, rf3);
}
static void rt2500usb_config_ps(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf)
{
enum dev_state state =
(libconf->conf->flags & IEEE80211_CONF_PS) ?
STATE_SLEEP : STATE_AWAKE;
u16 reg;
if (state == STATE_SLEEP) {
rt2500usb_register_read(rt2x00dev, MAC_CSR18, ®);
rt2x00_set_field16(®, MAC_CSR18_DELAY_AFTER_BEACON,
rt2x00dev->beacon_int - 20);
rt2x00_set_field16(®, MAC_CSR18_BEACONS_BEFORE_WAKEUP,
libconf->conf->listen_interval - 1);
/* We must first disable autowake before it can be enabled */
rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 0);
rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 1);
rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
} else {
rt2500usb_register_read(rt2x00dev, MAC_CSR18, ®);
rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 0);
rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
}
rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
}
static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
const unsigned int flags)
{
if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
rt2500usb_config_channel(rt2x00dev, &libconf->rf,
libconf->conf->power_level);
if ((flags & IEEE80211_CONF_CHANGE_POWER) &&
!(flags & IEEE80211_CONF_CHANGE_CHANNEL))
rt2500usb_config_txpower(rt2x00dev,
libconf->conf->power_level);
if (flags & IEEE80211_CONF_CHANGE_PS)
rt2500usb_config_ps(rt2x00dev, libconf);
}
/*
* Link tuning
*/
static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
struct link_qual *qual)
{
u16 reg;
/*
* Update FCS error count from register.
*/
rt2500usb_register_read(rt2x00dev, STA_CSR0, ®);
qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
/*
* Update False CCA count from register.
*/
rt2500usb_register_read(rt2x00dev, STA_CSR3, ®);
qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
}
static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev,
struct link_qual *qual)
{
u16 eeprom;
u16 value;
rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
rt2500usb_bbp_write(rt2x00dev, 24, value);
rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
rt2500usb_bbp_write(rt2x00dev, 25, value);
rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
rt2500usb_bbp_write(rt2x00dev, 61, value);
rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
rt2500usb_bbp_write(rt2x00dev, 17, value);
qual->vgc_level = value;
}
/*
* Queue handlers.
*/
static void rt2500usb_start_queue(struct data_queue *queue)
{
struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
u16 reg;
switch (queue->qid) {
case QID_RX:
rt2500usb_register_read(rt2x00dev, TXRX_CSR2, ®);
rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
break;
case QID_BEACON:
rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®);
rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 1);
rt2x00_set_field16(®, TXRX_CSR19_TBCN, 1);
rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
break;
default:
break;
}
}
static void rt2500usb_stop_queue(struct data_queue *queue)
{
struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
u16 reg;
switch (queue->qid) {
case QID_RX:
rt2500usb_register_read(rt2x00dev, TXRX_CSR2, ®);
rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
break;
case QID_BEACON:
rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®);
rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 0);
rt2x00_set_field16(®, TXRX_CSR19_TBCN, 0);
rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
break;
default:
break;
}
}
/*
* Initialization functions.
*/
static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
{
u16 reg;
rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
USB_MODE_TEST, REGISTER_TIMEOUT);
rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
0x00f0, REGISTER_TIMEOUT);
rt2500usb_register_read(rt2x00dev, TXRX_CSR2, ®);
rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
rt2500usb_register_read(rt2x00dev, MAC_CSR1, ®);
rt2x00_set_field16(®, MAC_CSR1_SOFT_RESET, 1);
rt2x00_set_field16(®, MAC_CSR1_BBP_RESET, 1);
rt2x00_set_field16(®, MAC_CSR1_HOST_READY, 0);
rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
rt2500usb_register_read(rt2x00dev, MAC_CSR1, ®);
rt2x00_set_field16(®, MAC_CSR1_SOFT_RESET, 0);
rt2x00_set_field16(®, MAC_CSR1_BBP_RESET, 0);
rt2x00_set_field16(®, MAC_CSR1_HOST_READY, 0);
rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR5, ®);
rt2x00_set_field16(®, TXRX_CSR5_BBP_ID0, 13);
rt2x00_set_field16(®, TXRX_CSR5_BBP_ID0_VALID, 1);
rt2x00_set_field16(®, TXRX_CSR5_BBP_ID1, 12);
rt2x00_set_field16(®, TXRX_CSR5_BBP_ID1_VALID, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR6, ®);
rt2x00_set_field16(®, TXRX_CSR6_BBP_ID0, 10);
rt2x00_set_field16(®, TXRX_CSR6_BBP_ID0_VALID, 1);
rt2x00_set_field16(®, TXRX_CSR6_BBP_ID1, 11);
rt2x00_set_field16(®, TXRX_CSR6_BBP_ID1_VALID, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR7, ®);
rt2x00_set_field16(®, TXRX_CSR7_BBP_ID0, 7);
rt2x00_set_field16(®, TXRX_CSR7_BBP_ID0_VALID, 1);
rt2x00_set_field16(®, TXRX_CSR7_BBP_ID1, 6);
rt2x00_set_field16(®, TXRX_CSR7_BBP_ID1_VALID, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR8, ®);
rt2x00_set_field16(®, TXRX_CSR8_BBP_ID0, 5);
rt2x00_set_field16(®, TXRX_CSR8_BBP_ID0_VALID, 1);
rt2x00_set_field16(®, TXRX_CSR8_BBP_ID1, 0);
rt2x00_set_field16(®, TXRX_CSR8_BBP_ID1_VALID, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®);
rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 0);
rt2x00_set_field16(®, TXRX_CSR19_TSF_SYNC, 0);
rt2x00_set_field16(®, TXRX_CSR19_TBCN, 0);
rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
return -EBUSY;
rt2500usb_register_read(rt2x00dev, MAC_CSR1, ®);
rt2x00_set_field16(®, MAC_CSR1_SOFT_RESET, 0);
rt2x00_set_field16(®, MAC_CSR1_BBP_RESET, 0);
rt2x00_set_field16(®, MAC_CSR1_HOST_READY, 1);
rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
if (rt2x00_rev(rt2x00dev) >= RT2570_VERSION_C) {
rt2500usb_register_read(rt2x00dev, PHY_CSR2, ®);
rt2x00_set_field16(®, PHY_CSR2_LNA, 0);
} else {
reg = 0;
rt2x00_set_field16(®, PHY_CSR2_LNA, 1);
rt2x00_set_field16(®, PHY_CSR2_LNA_MODE, 3);
}
rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
rt2500usb_register_read(rt2x00dev, MAC_CSR8, ®);
rt2x00_set_field16(®, MAC_CSR8_MAX_FRAME_UNIT,
rt2x00dev->rx->data_size);
rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR0, ®);
rt2x00_set_field16(®, TXRX_CSR0_ALGORITHM, CIPHER_NONE);
rt2x00_set_field16(®, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
rt2x00_set_field16(®, TXRX_CSR0_KEY_ID, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
rt2500usb_register_read(rt2x00dev, MAC_CSR18, ®);
rt2x00_set_field16(®, MAC_CSR18_DELAY_AFTER_BEACON, 90);
rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
rt2500usb_register_read(rt2x00dev, PHY_CSR4, ®);
rt2x00_set_field16(®, PHY_CSR4_LOW_RF_LE, 1);
rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
rt2500usb_register_read(rt2x00dev, TXRX_CSR1, ®);
rt2x00_set_field16(®, TXRX_CSR1_AUTO_SEQUENCE, 1);
rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
return 0;
}
static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
{
unsigned int i;
u8 value;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2500usb_bbp_read(rt2x00dev, 0, &value);
if ((value != 0xff) && (value != 0x00))
return 0;
udelay(REGISTER_BUSY_DELAY);
}
ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
return -EACCES;
}
static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
{
unsigned int i;
u16 eeprom;
u8 value;
u8 reg_id;
if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
return -EACCES;
rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
for (i = 0; i < EEPROM_BBP_SIZE; i++) {
rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
if (eeprom != 0xffff && eeprom != 0x0000) {
reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
rt2500usb_bbp_write(rt2x00dev, reg_id, value);
}
}
return 0;
}
/*
* Device state switch handlers.
*/
static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
{
/*
* Initialize all registers.
*/
if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
rt2500usb_init_bbp(rt2x00dev)))
return -EIO;
return 0;
}
static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
{
rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
/*
* Disable synchronisation.
*/