/*
Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
<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: rt2500pci
Abstract: rt2500pci device specific routines.
Supported chipsets: RT2560.
*/
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/eeprom_93cx6.h>
#include "rt2x00.h"
#include "rt2x00pci.h"
#include "rt2500pci.h"
/*
* Register access.
* All access to the CSR registers will go through the methods
* rt2x00pci_register_read and rt2x00pci_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.
*/
static u32 rt2500pci_bbp_check(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
unsigned int i;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, BBPCSR, ®);
if (!rt2x00_get_field32(reg, BBPCSR_BUSY))
break;
udelay(REGISTER_BUSY_DELAY);
}
return reg;
}
static void rt2500pci_bbp_write(struct rt2x00_dev *rt2x00dev,
const unsigned int word, const u8 value)
{
u32 reg;
/*
* Wait until the BBP becomes ready.
*/
reg = rt2500pci_bbp_check(rt2x00dev);
if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
ERROR(rt2x00dev, "BBPCSR register busy. Write failed.\n");
return;
}
/*
* Write the data into the BBP.
*/
reg = 0;
rt2x00_set_field32(®, BBPCSR_VALUE, value);
rt2x00_set_field32(®, BBPCSR_REGNUM, word);
rt2x00_set_field32(®, BBPCSR_BUSY, 1);
rt2x00_set_field32(®, BBPCSR_WRITE_CONTROL, 1);
rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
}
static void rt2500pci_bbp_read(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u8 *value)
{
u32 reg;
/*
* Wait until the BBP becomes ready.
*/
reg = rt2500pci_bbp_check(rt2x00dev);
if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
ERROR(rt2x00dev, "BBPCSR register busy. Read failed.\n");
return;
}
/*
* Write the request into the BBP.
*/
reg = 0;
rt2x00_set_field32(®, BBPCSR_REGNUM, word);
rt2x00_set_field32(®, BBPCSR_BUSY, 1);
rt2x00_set_field32(®, BBPCSR_WRITE_CONTROL, 0);
rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
/*
* Wait until the BBP becomes ready.
*/
reg = rt2500pci_bbp_check(rt2x00dev);
if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
ERROR(rt2x00dev, "BBPCSR register busy. Read failed.\n");
*value = 0xff;
return;
}
*value = rt2x00_get_field32(reg, BBPCSR_VALUE);
}
static void rt2500pci_rf_write(struct rt2x00_dev *rt2x00dev,
const unsigned int word, const u32 value)
{
u32 reg;
unsigned int i;
if (!word)
return;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, RFCSR, ®);
if (!rt2x00_get_field32(reg, RFCSR_BUSY))
goto rf_write;
udelay(REGISTER_BUSY_DELAY);
}
ERROR(rt2x00dev, "RFCSR register busy. Write failed.\n");
return;
rf_write:
reg = 0;
rt2x00_set_field32(®, RFCSR_VALUE, value);
rt2x00_set_field32(®, RFCSR_NUMBER_OF_BITS, 20);
rt2x00_set_field32(®, RFCSR_IF_SELECT, 0);
rt2x00_set_field32(®, RFCSR_BUSY, 1);
rt2x00pci_register_write(rt2x00dev, RFCSR, reg);
rt2x00_rf_write(rt2x00dev, word, value);
}
static void rt2500pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
{
struct rt2x00_dev *rt2x00dev = eeprom->data;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR21, ®);
eeprom->reg_data_in = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_IN);
eeprom->reg_data_out = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_OUT);
eeprom->reg_data_clock =
!!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_CLOCK);
eeprom->reg_chip_select =
!!rt2x00_get_field32(reg, CSR21_EEPROM_CHIP_SELECT);
}
static void rt2500pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
{
struct rt2x00_dev *rt2x00dev = eeprom->data;
u32 reg = 0;
rt2x00_set_field32(®, CSR21_EEPROM_DATA_IN, !!eeprom->reg_data_in);
rt2x00_set_field32(®, CSR21_EEPROM_DATA_OUT, !!eeprom->reg_data_out);
rt2x00_set_field32(®, CSR21_EEPROM_DATA_CLOCK,
!!eeprom->reg_data_clock);
rt2x00_set_field32(®, CSR21_EEPROM_CHIP_SELECT,
!!eeprom->reg_chip_select);
rt2x00pci_register_write(rt2x00dev, CSR21, reg);
}
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
#define CSR_OFFSET(__word) ( CSR_REG_BASE + ((__word) * sizeof(u32)) )
static void rt2500pci_read_csr(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u32 *data)
{
rt2x00pci_register_read(rt2x00dev, CSR_OFFSET(word), data);
}
static void rt2500pci_write_csr(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u32 data)
{
rt2x00pci_register_write(rt2x00dev, CSR_OFFSET(word), data);
}
static const struct rt2x00debug rt2500pci_rt2x00debug = {
.owner = THIS_MODULE,
.csr = {
.read = rt2500pci_read_csr,
.write = rt2500pci_write_csr,
.word_size = sizeof(u32),
.word_count = CSR_REG_SIZE / sizeof(u32),
},
.eeprom = {
.read = rt2x00_eeprom_read,
.write = rt2x00_eeprom_write,
.word_size = sizeof(u16),
.word_count = EEPROM_SIZE / sizeof(u16),
},
.bbp = {
.read = rt2500pci_bbp_read,
.write = rt2500pci_bbp_write,
.word_size = sizeof(u8),
.word_count = BBP_SIZE / sizeof(u8),
},
.rf = {
.read = rt2x00_rf_read,
.write = rt2500pci_rf_write,
.word_size = sizeof(u32),
.word_count = RF_SIZE / sizeof(u32),
},
};
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
#ifdef CONFIG_RT2500PCI_RFKILL
static int rt2500pci_rfkill_poll(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, GPIOCSR, ®);
return rt2x00_get_field32(reg, GPIOCSR_BIT0);
}
#else
#define rt2500pci_rfkill_poll NULL
#endif /* CONFIG_RT2500PCI_RFKILL */
/*
* Configuration handlers.
*/
static void rt2500pci_config_mac_addr(struct rt2x00_dev *rt2x00dev,
__le32 *mac)
{
rt2x00pci_register_multiwrite(rt2x00dev, CSR3, mac,
(2 * sizeof(__le32)));
}
static void rt2500pci_config_bssid(struct rt2x00_dev *rt2x00dev,
__le32 *bssid)
{
rt2x00pci_register_multiwrite(rt2x00dev, CSR5, bssid,
(2 * sizeof(__le32)));
}
static void rt2500pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
const int tsf_sync)
{
u32 reg;
rt2x00pci_register_write(rt2x00dev, CSR14, 0);
/*
* Enable beacon config
*/
rt2x00pci_register_read(rt2x00dev, BCNCSR1, ®);
rt2x00_set_field32(®, BCNCSR1_PRELOAD,
PREAMBLE + get_duration(IEEE80211_HEADER, 20));
rt2x00_set_field32(®, BCNCSR1_BEACON_CWMIN,
rt2x00lib_get_ring(rt2x00dev,
IEEE80211_TX_QUEUE_BEACON)
->tx_params.cw_min);
rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
/*
* Enable synchronisation.
*/
rt2x00pci_register_read(rt2x00dev, CSR14, ®);
rt2x00_set_field32(®, CSR14_TSF_COUNT, 1);
rt2x00_set_field32(®, CSR14_TBCN, (tsf_sync == TSF_SYNC_BEACON));
rt2x00_set_field32(®, CSR14_BEACON_GEN, 0);
rt2x00_set_field32(®, CSR14_TSF_SYNC, tsf_sync);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
}
static void rt2500pci_config_preamble(struct rt2x00_dev *rt2x00dev,
const int short_preamble,
const int ack_timeout,
const int ack_consume_time)
{
int preamble_mask;
u32 reg;
/*
* When short preamble is enabled, we should set bit 0x08
*/
preamble_mask = short_preamble << 3;
rt2x00pci_register_read(rt2x00dev, TXCSR1, ®);
rt2x00_set_field32(®, TXCSR1_ACK_TIMEOUT, ack_timeout);
rt2x00_set_field32(®, TXCSR1_ACK_CONSUME_TIME, ack_consume_time);
rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR2, ®);
rt2x00_set_field32(®, ARCSR2_SIGNAL, 0x00 | preamble_mask);
rt2x00_set_field32(®, ARCSR2_SERVICE, 0x04);
rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 10));
rt2x00pci_register_write(rt2x00dev, ARCSR2, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR3, ®);
rt2x00_set_field32(®, ARCSR3_SIGNAL, 0x01 | preamble_mask);
rt2x00_set_field32(®, ARCSR3_SERVICE, 0x04);
rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 20));
rt2x00pci_register_write(rt2x00dev, ARCSR3, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR4, ®);
rt2x00_set_field32(®, ARCSR4_SIGNAL, 0x02 | preamble_mask);
rt2x00_set_field32(®, ARCSR4_SERVICE, 0x04);
rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 55));
rt2x00pci_register_write(rt2x00dev, ARCSR4, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR5, ®);
rt2x00_set_field32(®, ARCSR5_SIGNAL, 0x03 | preamble_mask);
rt2x00_set_field32(®, ARCSR5_SERVICE, 0x84);
rt2x00_set_field32(®, ARCSR2_LENGTH, get_duration(ACK_SIZE, 110));
rt2x00pci_register_write(rt2x00dev, ARCSR5, reg);
}
static void rt2500pci_config_phymode(struct rt2x00_dev *rt2x00dev,
const int basic_rate_mask)
{
rt2x00pci_register_write(rt2x00dev, ARCSR1, basic_rate_mask);
}
static void rt2500pci_config_channel(struct rt2x00_dev *rt2x00dev,
struct rf_channel *rf, const int txpower)
{
u8 r70;
/*
* Set TXpower.
*/
rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
/*
* Switch on tuning bits.
* For RT2523 devices we do not need to update the R1 register.
*/
if (!rt2x00_rf(&rt2x00dev->chip, RF2523))
rt2x00_set_field32(&rf->rf1, RF1_TUNER, 1);
rt2x00_set_field32(&rf->rf3, RF3_TUNER, 1);
/*
* For RT2525 we should first set the channel to half band higher.
*/
if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
static const u32 vals[] = {
0x00080cbe, 0x00080d02, 0x00080d06, 0x00080d0a,
0x00080d0e, 0x00080d12, 0x00080d16, 0x00080d1a,
0x00080d1e, 0x00080d22, 0x00080d26, 0x00080d2a,
0x00080d2e, 0x00080d3a
};
rt2500pci_rf_write(rt2x00dev, 1, rf->rf1);
rt2500pci_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
rt2500pci_rf_write(rt2x00dev, 3, rf->rf3);
if (rf->rf4)
rt2500pci_rf_write(rt2x00dev, 4, rf->rf4);
}
rt2500pci_rf_write(rt2x00dev, 1, rf->rf1);
rt2500pci_rf_write(rt2x00dev, 2, rf->rf2);
rt2500pci_rf_write(rt2x00dev, 3, rf->rf3);
if (rf->rf4)
rt2500pci_rf_write(rt2x00dev, 4, rf->rf4);
/*
* Channel 14 requires the Japan filter bit to be set.
*/
r70 = 0x46;
rt2x00_set_field8(&r70, BBP_R70_JAPAN_FILTER, rf->channel == 14);
rt2500pci_bbp_write(rt2x00dev, 70, r70);
msleep(1);
/*
* Switch off tuning bits.
* For RT2523 devices we do not need to update the R1 register.
*/
if (!rt2x00_rf(&rt2x00dev->chip, RF2523)) {
rt2x00_set_field32(&rf->rf1, RF1_TUNER, 0);
rt2500pci_rf_write(rt2x00dev, 1, rf->rf1);
}
rt2x00_set_field32(&rf->rf3, RF3_TUNER, 0);
rt2500pci_rf_write(rt2x00dev, 3, rf->rf3);
/*
* Clear false CRC during channel switch.
*/
rt2x00pci_register_read(rt2x00dev, CNT0, &rf->rf1);
}
static void rt2500pci_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));
rt2500pci_rf_write(rt2x00dev, 3, rf3);
}
static void rt2500pci_config_antenna(struct rt2x00_dev *rt2x00dev,
struct antenna_setup *ant)
{
u32 reg;
u8 r14;
u8 r2;
rt2x00pci_register_read(rt2x00dev, BBPCSR1, ®);
rt2500pci_bbp_read(rt2x00dev, 14, &r14);
rt2500pci_bbp_read(rt2x00dev, 2, &r2);
/*
* Configure the TX antenna.
*/
switch (ant->tx) {
case ANTENNA_A:
rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
rt2x00_set_field32(®, BBPCSR1_CCK, 0);
rt2x00_set_field32(®, BBPCSR1_OFDM, 0);
break;
case ANTENNA_HW_DIVERSITY:
case ANTENNA_SW_DIVERSITY:
/*
* NOTE: We should never come here because rt2x00lib is
* supposed to catch this and send us the correct antenna
* explicitely. However we are nog going to bug about this.
* Instead, just default to antenna B.
*/
case ANTENNA_B:
rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
rt2x00_set_field32(®, BBPCSR1_CCK, 2);
rt2x00_set_field32(®, BBPCSR1_OFDM, 2);
break;
}
/*
* Configure the RX antenna.
*/
switch (ant->rx) {
case ANTENNA_A:
rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
break;
case ANTENNA_HW_DIVERSITY:
case ANTENNA_SW_DIVERSITY:
/*
* NOTE: We should never come here because rt2x00lib is
* supposed to catch this and send us the correct antenna
* explicitely. However we are nog going to bug about this.
* Instead, just default to antenna B.
*/
case ANTENNA_B:
rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
break;
}
/*
* RT2525E and RT5222 need to flip TX I/Q
*/
if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
rt2x00_rf(&rt2x00dev->chip, RF5222)) {
rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
rt2x00_set_field32(®, BBPCSR1_CCK_FLIP, 1);
rt2x00_set_field32(®, BBPCSR1_OFDM_FLIP, 1);
/*
* RT2525E does not need RX I/Q Flip.
*/
if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
} else {
rt2x00_set_field32(®, BBPCSR1_CCK_FLIP, 0);
rt2x00_set_field32(®, BBPCSR1_OFDM_FLIP, 0);
}
rt2x00pci_register_write(rt2x00dev, BBPCSR1, reg);
rt2500pci_bbp_write(rt2x00dev, 14, r14);
rt2500pci_bbp_write(rt2x00dev, 2, r2);
}
static void rt2500pci_config_duration(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR11, ®);
rt2x00_set_field32(®, CSR11_SLOT_TIME, libconf->slot_time);
rt2x00pci_register_write(rt2x00dev, CSR11, reg);
rt2x00pci_register_read(rt2x00dev, CSR18, ®);
rt2x00_set_field32(®, CSR18_SIFS, libconf->sifs);
rt2x00_set_field32(®, CSR18_PIFS, libconf->pifs);
rt2x00pci_register_write(rt2x00dev, CSR18, reg);
rt2x00pci_register_read(rt2x00dev, CSR19, ®);
rt2x00_set_field32(®, CSR19_DIFS, libconf->difs);
rt2x00_set_field32(®, CSR19_EIFS, libconf->eifs);
rt2x00pci_register_write(rt2x00dev, CSR19, reg);
rt2x00pci_register_read(rt2x00dev, TXCSR1, ®);
rt2x00_set_field32(®, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
rt2x00_set_field32(®, TXCSR1_AUTORESPONDER, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
rt2x00pci_register_read(rt2x00dev, CSR12, ®);
rt2x00_set_field32(®, CSR12_BEACON_INTERVAL,
libconf->conf->beacon_int * 16);
rt2x00_set_field32(®, CSR12_CFP_MAX_DURATION,
libconf->conf->beacon_int * 16);
rt2x00pci_register_write(rt2x00dev, CSR12, reg);
}
static void rt2500pci_config(struct rt2x00_dev *rt2x00dev,
const unsigned int flags,
struct rt2x00lib_conf *libconf)
{
if (flags & CONFIG_UPDATE_PHYMODE)
rt2500pci_config_phymode(rt2x00dev, libconf->basic_rates);
if (flags & CONFIG_UPDATE_CHANNEL)
rt2500pci_config_channel(rt2x00dev, &libconf->rf,
libconf->conf->power_level);
if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
rt2500pci_config_txpower(rt2x00dev,
libconf->conf->power_level);
if (flags & CONFIG_UPDATE_ANTENNA)
rt2500pci_config_antenna(rt2x00dev, &libconf->ant);
if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
rt2500pci_config_duration(rt2x00dev, libconf);
}
/*
* LED functions.
*/
static void rt2500pci_enable_led(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, LEDCSR, ®);
rt2x00_set_field32(®, LEDCSR_ON_PERIOD, 70);
rt2x00_set_field32(®, LEDCSR_OFF_PERIOD, 30);
rt2x00_set_field32(®, LEDCSR_LINK,
(rt2x00dev->led_mode != LED_MODE_ASUS));
rt2x00_set_field32(®, LEDCSR_ACTIVITY,
(rt2x00dev->led_mode != LED_MODE_TXRX_ACTIVITY));
rt2x00pci_register_write(rt2x00dev, LEDCSR, reg);
}
static void rt2500pci_disable_led(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, LEDCSR, ®);
rt2x00_set_field32(®, LEDCSR_LINK, 0);
rt2x00_set_field32(®, LEDCSR_ACTIVITY, 0);
rt2x00pci_register_write(rt2x00dev, LEDCSR, reg);
}
/*
* Link tuning
*/
static void rt2500pci_link_stats(struct rt2x00_dev *rt2x00dev,
struct link_qual *qual)
{
u32 reg;
/*
* Update FCS error count from register.
*/
rt2x00pci_register_read(rt2x00dev, CNT0, ®);
qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR);
/*
* Update False CCA count from register.
*/
rt2x00pci_register_read(rt2x00dev, CNT3, ®);
qual->false_cca = rt2x00_get_field32(reg, CNT3_FALSE_CCA);
}
static void rt2500pci_reset_tuner(struct rt2x00_dev *rt2x00dev)
{
rt2500pci_bbp_write(rt2x00dev, 17, 0x48);
rt2x00dev->link.vgc_level = 0x48;
}
static void rt2500pci_link_tuner(struct rt2x00_dev *rt2x00dev)
{
int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
u8 r17;
/*
* To prevent collisions with MAC ASIC on chipsets
* up to version C the link tuning should halt after 20
* seconds.
*/
if (rt2x00_rev(&rt2x00dev->chip) < RT2560_VERSION_D &&
rt2x00dev->link.count > 20)
return;
rt2500pci_bbp_read(rt2x00dev, 17, &r17);
/*
* Chipset versions C and lower should directly continue
* to the dynamic CCA tuning.
*/
if (rt2x00_rev(&rt2x00dev->chip) < RT2560_VERSION_D)
goto dynamic_cca_tune;
/*
* A too low RSSI will cause too much false CCA which will
* then corrupt the R17 tuning. To remidy this the tuning should
* be stopped (While making sure the R17 value will not exceed limits)
*/
if (rssi < -80 && rt2x00dev->link.count > 20) {
if (r17 >= 0x41) {
r17 = rt2x00dev->link.vgc_level;
rt2500pci_bbp_write(rt2x00dev, 17, r17);
}
return;
}
/*
* Special big-R17 for short distance
*/
if (rssi >= -58) {
if (r17 != 0x50)
rt2500pci_bbp_write(rt2x00dev, 17, 0x50);
return;
}
/*
* Special mid-R17 for middle distance
*/
if (rssi >= -74) {
if (r17 != 0x41)
rt2500pci_bbp_write(rt2x00dev, 17, 0x41);
return;
}
/*
* Leave short or middle distance condition, restore r17
* to the dynamic tuning range.
*/
if (r17 >= 0x41) {
rt2500pci_bbp_write(rt2x00dev, 17, rt2x00dev->link.vgc_level);
return;
}
dynamic_cca_tune:
/*
* R17 is inside the dynamic tuning range,
* start tuning the link based on the false cca counter.
*/
if (rt2x00dev->link.qual.false_cca > 512 && r17 < 0x40) {
rt2500pci_bbp_write(rt2x00dev, 17, ++r17);
rt2x00dev->link.vgc_level = r17;
} else if (rt2x00dev->link.qual.false_cca < 100 && r17 > 0x32) {
rt2500pci_bbp_write(rt2x00dev, 17, --r17);
rt2x00dev->link.vgc_level = r17;
}
}
/*
* Initialization functions.
*/
static void rt2500pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
struct data_entry *entry)
{
__le32 *rxd = entry->priv;
u32 word;
rt2x00_desc_read(rxd, 1, &word);
rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, entry->data_dma);
rt2x00_desc_write(rxd, 1, word);
rt2x00_desc_read(rxd, 0, &word);
rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
rt2x00_desc_write(rxd, 0, word);
}
static void rt2500pci_init_txentry(struct rt2x00_dev *rt2x00dev,
struct data_entry *entry)
{
__le32 *txd = entry->priv;
u32 word;
rt2x00_desc_read(txd, 1, &word);
rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, entry->data_dma);
rt2x00_desc_write(txd, 1, word);
rt2x00_desc_read(txd, 0, &word);
rt2x00_set_field32(&word, TXD_W0_VALID, 0);
rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
rt2x00_desc_write(txd, 0, word);
}
static int rt2500pci_init_rings(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
/*
* Initialize registers.
*/
rt2x00pci_register_read(rt2x00dev, TXCSR2, ®);
rt2x00_set_field32(®, TXCSR2_TXD_SIZE,
rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].desc_size);
rt2x00_set_field32(®, TXCSR2_NUM_TXD,
rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].stats.limit);
rt2x00_set_field32(®, TXCSR2_NUM_ATIM,
rt2x00dev->bcn[1].stats.limit);
rt2x00_set_field32(®, TXCSR2_NUM_PRIO,
rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].stats.limit);
rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
rt2x00pci_register_read(rt2x00dev, TXCSR3, ®);
rt2x00_set_field32(®, TXCSR3_TX_RING_REGISTER,
rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].data_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
rt2x00pci_register_read(rt2x00dev, TXCSR5, ®);
rt2x00_set_field32(®, TXCSR5_PRIO_RING_REGISTER,
rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].data_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
rt2x00pci_register_read(rt2x00dev, TXCSR4, ®);
rt2x00_set_field32(®, TXCSR4_ATIM_RING_REGISTER,
rt2x00dev->bcn[1].data_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
rt2x00pci_register_read(rt2x00dev, TXCSR6, ®);
rt2x00_set_field32(®, TXCSR6_BEACON_RING_REGISTER,
rt2x00dev->bcn[0].data_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
rt2x00pci_register_read(rt2x00dev, RXCSR1, ®);
rt2x00_set_field32(®, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
rt2x00_set_field32(®, RXCSR1_NUM_RXD, rt2x00dev->rx->stats.limit);
rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
rt2x00pci_register_read(rt2x00dev, RXCSR2, ®);
rt2x00_set_field32(®, RXCSR2_RX_RING_REGISTER,
rt2x00dev->rx->data_dma);
rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
return 0;
}
static int rt2500pci_init_registers(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
rt2x00pci_register_write(rt2x00dev, PSCSR0, 0x00020002);
rt2x00pci_register_write(rt2x00dev, PSCSR1, 0x00000002);
rt2x00pci_register_write(rt2x00dev, PSCSR2, 0x00020002);
rt2x00pci_register_write(rt2x00dev, PSCSR3, 0x00000002);
rt2x00pci_register_read(rt2x00dev, TIMECSR, ®);
rt2x00_set_field32(®, TIMECSR_US_COUNT, 33);
rt2x00_set_field32(®, TIMECSR_US_64_COUNT, 63);
rt2x00_set_field32(®, TIMECSR_BEACON_EXPECT, 0);
rt2x00pci_register_write(rt2x00dev, TIMECSR, reg);
rt2x00pci_register_read(rt2x00dev, CSR9, ®);
rt2x00_set_field32(®, CSR9_MAX_FRAME_UNIT,
rt2x00dev->rx->data_size / 128);
rt2x00pci_register_write(rt2x00dev, CSR9, reg);
/*
* Always use CWmin and CWmax set in descriptor.
*/
rt2x00pci_register_read(rt2x00dev, CSR11, ®);
rt2x00_set_field32(®, CSR11_CW_SELECT, 0);
rt2x00pci_register_write(rt2x00dev, CSR11, reg);
rt2x00pci_register_write(rt2x00dev, CNT3, 0);
rt2x00pci_register_read(rt2x00dev, TXCSR8, ®);
rt2x00_set_field32(®, TXCSR8_BBP_ID0, 10);
rt2x00_set_field32(®, TXCSR8_BBP_ID0_VALID, 1);
rt2x00_set_field32(®, TXCSR8_BBP_ID1, 11);
rt2x00_set_field32(®, TXCSR8_BBP_ID1_VALID, 1);
rt2x00_set_field32(®, TXCSR8_BBP_ID2, 13);
rt2x00_set_field32(®, TXCSR8_BBP_ID2_VALID, 1);
rt2x00_set_field32(®, TXCSR8_BBP_ID3, 12);
rt2x00_set_field32(®, TXCSR8_BBP_ID3_VALID, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR8, reg);
rt2x00pci_register_read(rt2x00dev, ARTCSR0, ®);
rt2x00_set_field32(®, ARTCSR0_ACK_CTS_1MBS, 112);
rt2x00_set_field32(®, ARTCSR0_ACK_CTS_2MBS, 56);
rt2x00_set_field32(®, ARTCSR0_ACK_CTS_5_5MBS, 20);
rt2x00_set_field32(®, ARTCSR0_ACK_CTS_11MBS, 10);
rt2x00pci_register_write(rt2x00dev, ARTCSR0, reg);
rt2x00pci_register_read(rt2x00dev, ARTCSR1, ®);
rt2x00_set_field32(®, ARTCSR1_ACK_CTS_6MBS, 45);
rt2x00_set_field32(®, ARTCSR1_ACK_CTS_9MBS, 37);
rt2x00_set_field32(®, ARTCSR1_ACK_CTS_12MBS, 33);
rt2x00_set_field32(®, ARTCSR1_ACK_CTS_18MBS, 29);
rt2x00pci_register_write(rt2x00dev, ARTCSR1, reg);
rt2x00pci_register_read(rt2x00dev, ARTCSR2, ®);
rt2x00_set_field32(®, ARTCSR2_ACK_CTS_24MBS, 29);
rt2x00_set_field32(®, ARTCSR2_ACK_CTS_36MBS, 25);
rt2x00_set_field32(®, ARTCSR2_ACK_CTS_48MBS, 25);
rt2x00_set_field32(®, ARTCSR2_ACK_CTS_54MBS, 25);
rt2x00pci_register_write(rt2x00dev, ARTCSR2, reg);
rt2x00pci_register_read(rt2x00dev, RXCSR3, ®);
rt2x00_set_field32(®, RXCSR3_BBP_ID0, 47); /* CCK Signal */
rt2x00_set_field32(®, RXCSR3_BBP_ID0_VALID, 1);
rt2x00_set_field32(®, RXCSR3_BBP_ID1, 51); /* Rssi */
rt2x00_set_field32(®, RXCSR3_BBP_ID1_VALID, 1);
rt2x00_set_field32(®, RXCSR3_BBP_ID2, 42); /* OFDM Rate */
rt2x00_set_field32(®, RXCSR3_BBP_ID2_VALID, 1);
rt2x00_set_field32(®, RXCSR3_BBP_ID3, 51); /* RSSI */
rt2x00_set_field32(®, RXCSR3_BBP_ID3_VALID, 1);
rt2x00pci_register_write(rt2x00dev, RXCSR3, reg);
rt2x00pci_register_read(rt2x00dev, PCICSR, ®);
rt2x00_set_field32(®, PCICSR_BIG_ENDIAN, 0);
rt2x00_set_field32(®, PCICSR_RX_TRESHOLD, 0);
rt2x00_set_field32(®, PCICSR_TX_TRESHOLD, 3);
rt2x00_set_field32(®, PCICSR_BURST_LENTH, 1);
rt2x00_set_field32(®, PCICSR_ENABLE_CLK, 1);
rt2x00_set_field32(®, PCICSR_READ_MULTIPLE, 1);
rt2x00_set_field32(®, PCICSR_WRITE_INVALID, 1);
rt2x00pci_register_write(rt2x00dev, PCICSR, reg);
rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
rt2x00pci_register_write(rt2x00dev, GPIOCSR, 0x0000ff00);
rt2x00pci_register_write(rt2x00dev, TESTCSR, 0x000000f0);
if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
return -EBUSY;
rt2x00pci_register_write(rt2x00dev, MACCSR0, 0x00213223);
rt2x00pci_register_write(rt2x00dev, MACCSR1, 0x00235518);
rt2x00pci_register_read(rt2x00dev, MACCSR2, ®);
rt2x00_set_field32(®, MACCSR2_DELAY, 64);
rt2x00pci_register_write(rt2x00dev, MACCSR2, reg);
rt2x00pci_register_read(rt2x00dev, RALINKCSR, ®);
rt2x00_set_field32(®, RALINKCSR_AR_BBP_DATA0, 17);
rt2x00_set_field32(®, RALINKCSR_AR_BBP_ID0, 26);
rt2x00_set_field32(®, RALINKCSR_AR_BBP_VALID0, 1);
rt2x00_set_field32(®, RALINKCSR_AR_BBP_DATA1, 0);
rt2x00_set_field32(®, RALINKCSR_AR_BBP_ID1, 26);
rt2x00_set_field32(®, RALINKCSR_AR_BBP_VALID1, 1);
rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg);
rt2x00pci_register_write(rt2x00dev, BBPCSR1, 0x82188200);
rt2x00pci_register_write(rt2x00dev, TXACKCSR0, 0x00000020);
rt2x00pci_register_read(rt2x00dev, CSR1, ®);
rt2x00_set_field32(®, CSR1_SOFT_RESET, 1);
rt2x00_set_field32(®, CSR1_BBP_RESET, 0);
rt2x00_set_field32(®, CSR1_HOST_READY, 0);
rt2x00pci_register_write(rt2x00dev, CSR1, reg);
rt2x00pci_register_read(rt2x00dev, CSR1, ®);
rt2x00_set_field32(®, CSR1_SOFT_RESET, 0);
rt2x00_set_field32(®, CSR1_HOST_READY, 1);
rt2x00pci_register_write(rt2x00dev, CSR1, reg);
/*
* We must clear the FCS and FIFO error count.
* These registers are cleared on read,
* so we may pass a useless variable to store the value.
*/
rt2x00pci_register_read(rt2x00dev, CNT0, ®);
rt2x00pci_register_read(rt2x00dev, CNT4, ®);
return 0;
}
static int rt2500pci_init_bbp(struct rt2x00_dev *rt2x00dev)
{
unsigned int i;
u16 eeprom;
u8 reg_id;
u8 value;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2500pci_bbp_read(rt2x00dev, 0, &value);
if ((value != 0xff) && (value != 0x00))
goto continue_csr_init;
NOTICE(rt2x00dev, "Waiting for BBP register.\n");
udelay(REGISTER_BUSY_DELAY);
}
ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
return -EACCES;
continue_csr_init:
rt2500pci_bbp_write(rt2x00dev, 3, 0x02);
rt2500pci_bbp_write(rt2x00dev, 4, 0x19);
rt2500pci_bbp_write(rt2x00dev, 14, 0x1c);
rt2500pci_bbp_write(rt2x00dev, 15, 0x30);
rt2500pci_bbp_write(rt2x00dev, 16, 0xac);
rt2500pci_bbp_write(rt2x00dev, 18, 0x18);
rt2500pci_bbp_write(rt2x00dev, 19, 0xff);
rt2500pci_bbp_write(rt2x00dev, 20, 0x1e);
rt2500pci_bbp_write(rt2x00dev, 21, 0x08);
rt2500pci_bbp_write(rt2x00dev, 22, 0x08);
rt2500pci_bbp_write(rt2x00dev, 23, 0x08);
rt2500pci_bbp_write(rt2x00dev, 24, 0x70);
rt2500pci_bbp_write(rt2x00dev, 25, 0x40);
rt2500pci_bbp_write(rt2x00dev, 26, 0x08);
rt2500pci_bbp_write(rt2x00dev, 27, 0x23);
rt2500pci_bbp_write(rt2x00dev, 30, 0x10);
rt2500pci_bbp_write(rt2x00dev, 31, 0x2b);
rt2500pci_bbp_write(rt2x00dev, 32, 0xb9);
rt2500pci_bbp_write(rt2x00dev, 34, 0x12);
rt2500pci_bbp_write(rt2x00dev, 35, 0x50);
rt2500pci_bbp_write(rt2x00dev, 39, 0xc4);
rt2500pci_bbp_write(rt2x00dev, 40, 0x02);
rt2500pci_bbp_write(rt2x00dev, 41, 0x60);
rt2500pci_bbp_write(rt2x00dev, 53, 0x10);
rt2500pci_bbp_write(rt2x00dev, 54, 0x18);
rt2500pci_bbp_write(rt2x00dev, 56, 0x08);
rt2500pci_bbp_write(rt2x00dev, 57, 0x10);
rt2500pci_bbp_write(rt2x00dev, 58, 0x08);
rt2500pci_bbp_write(rt2x00dev, 61, 0x6d);
rt2500pci_bbp_write(rt2x00dev, 62, 0x10);
DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
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);
DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
reg_id, value);
rt2500pci_bbp_write(rt2x00dev, reg_id, value);
}
}
DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
return 0;
}
/*
* Device state switch handlers.
*/
static void rt2500pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, RXCSR0, ®);
rt2x00_set_field32(®, RXCSR0_DISABLE_RX,
state == STATE_RADIO_RX_OFF);
rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
}
static void rt2500pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
int mask = (state == STATE_RADIO_IRQ_OFF);
u32 reg;
/*
* When interrupts are being enabled, the interrupt registers
* should clear the register to assure a clean state.
*/
if (state == STATE_RADIO_IRQ_ON) {
rt2x00pci_register_read(rt2x00dev, CSR7, ®);
rt2x00pci_register_write(rt2x00dev, CSR7, reg);
}
/*
* Only toggle the interrupts bits we are going to use.
* Non-checked interrupt bits are disabled by default.
*/
rt2x00pci_register_read(rt2x00dev, CSR8, ®);
rt2x00_set_field32(®, CSR8_TBCN_EXPIRE, mask);
rt2x00_set_field32(®, CSR8_TXDONE_TXRING, mask);
rt2x00_set_field32(®, CSR8_TXDONE_ATIMRING, mask);
rt2x00_set_field32(®, CSR8_TXDONE_PRIORING, mask);
rt2x00_set_field32(®, CSR8_RXDONE, mask);
rt2x00pci_register_write(rt2x00dev, CSR8, reg);
}
static int rt2500pci_enable_radio(struct rt2x00_dev *rt2x00dev)
{
/*
* Initialize all registers.
*/
if (rt2500pci_init_rings(rt2x00dev) ||
rt2500pci_init_registers(rt2x00dev) ||
rt2500pci_init_bbp(rt2x00dev)) {
ERROR(rt2x00dev, "Register initialization failed.\n");
return -EIO;
}
/*
* Enable interrupts.
*/
rt2500pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_ON);
/*
* Enable LED
*/
rt2500pci_enable_led(rt2x00dev);
return 0;
}
static void rt2500pci_disable_radio(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
/*
* Disable LED
*/
rt2500pci_disable_led(rt2x00dev);
rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0);
/*
* Disable synchronisation.
*/
rt2x00pci_register_write(rt2x00dev, CSR14, 0);
/*
* Cancel RX and TX.
*/
rt2x00pci_register_read(rt2x00dev, TXCSR0, ®);
rt2x00_set_field32(®, TXCSR0_ABORT, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
/*
* Disable interrupts.
*/
rt2500pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_OFF);
}
static int rt2500pci_set_state(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
u32 reg;
unsigned int i;
char put_to_sleep;
char bbp_state;
char rf_state;
put_to_sleep = (state != STATE_AWAKE);
rt2x00pci_register_read(rt2x00dev, PWRCSR1, ®);
rt2x00_set_field32(®, PWRCSR1_SET_STATE, 1);
rt2x00_set_field32(®, PWRCSR1_BBP_DESIRE_STATE, state);
rt2x00_set_field32(®, PWRCSR1_RF_DESIRE_STATE, state);
rt2x00_set_field32(®, PWRCSR1_PUT_TO_SLEEP, put_to_sleep);
rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
/*
* Device is not guaranteed to be in the requested state yet.
* We must wait until the register indicates that the
* device has entered the correct state.
*/
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, PWRCSR1, ®);
bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
if (bbp_state == state && rf_state == state)
return 0;
msleep(10);
}
NOTICE(rt2x00dev, "Device failed to enter state %d, "
"current device state: bbp %d and rf %d.\n",
state, bbp_state, rf_state);
return -EBUSY;
}
static int rt2500pci_set_device_state(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
int retval = 0;
switch (state) {
case STATE_RADIO_ON:
retval = rt2500pci_enable_radio(rt2x00dev);
break;
case STATE_RADIO_OFF:
rt2500pci_disable_radio(rt2x00dev);
break;
case STATE_RADIO_RX_ON:
case STATE_RADIO_RX_ON_LINK:
rt2500pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
break;
case STATE_RADIO_RX_OFF:
case STATE_RADIO_RX_OFF_LINK:
rt2500pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
break;
case STATE_DEEP_SLEEP:
case STATE_SLEEP:
case STATE_STANDBY:
case STATE_AWAKE:
retval = rt2500pci_set_state(rt2x00dev, state);
break;
default:
retval = -ENOTSUPP;
break;
}
return retval;
}
/*
* TX descriptor initialization
*/
static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
struct sk_buff *skb,
struct txdata_entry_desc *desc,
struct ieee80211_tx_control *control)
{
struct skb_desc *skbdesc = get_skb_desc(skb);
__le32 *txd = skbdesc->desc;
u32 word;
/*
* Start writing the descriptor words.
*/
rt2x00_desc_read(txd, 2, &word);
rt2x00_set_field32(&word, TXD_W2_IV_OFFSET, IEEE80211_HEADER);
rt2x00_set_field32(&word, TXD_W2_AIFS, desc->aifs);
rt2x00_set_field32(&word, TXD_W2_CWMIN, desc->cw_min);
rt2x00_set_field32(&word, TXD_W2_CWMAX, desc->cw_max);
rt2x00_desc_write(txd, 2, word);
rt2x00_desc_read(txd, 3, &word);
rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, desc->signal);
rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, desc->service);
rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW, desc->length_low);
rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH, desc->length_high);
rt2x00_desc_write(txd, 3, word);
rt2x00_desc_read(txd, 10, &word);
rt2x00_set_field32(&word, TXD_W10_RTS,
test_bit(ENTRY_TXD_RTS_FRAME, &desc->flags));
rt2x00_desc_write(txd, 10, word);
rt2x00_desc_read(txd, 0, &word);
rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
rt2x00_set_field32(&word, TXD_W0_VALID, 1);
rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
rt2x00_set_field32(&word, TXD_W0_ACK,
test_bit(ENTRY_TXD_ACK, &desc->flags));
rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
rt2x00_set_field32(&word, TXD_W0_OFDM,
test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
rt2x00_set_field32(&word, TXD_W0_CIPHER_OWNER, 1);
rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
!!(control->flags &
IEEE80211_TXCTL_LONG_RETRY_LIMIT));
rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
rt2x00_desc_write(txd, 0, word);
}
/*
* TX data initialization
*/
static void rt2500pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
unsigned int queue)
{
u32 reg;
if (queue == IEEE80211_TX_QUEUE_BEACON) {
rt2x00pci_register_read(rt2x00dev, CSR14, ®);
if (!rt2x00_get_field32(reg, CSR14_BEACON_GEN)) {
rt2x00_set_field32(®, CSR14_BEACON_GEN, 1);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
}
return;
}
rt2x00pci_register_read(rt2x00dev, TXCSR0, ®);
rt2x00_set_field32(®, TXCSR0_KICK_PRIO,
(queue == IEEE80211_TX_QUEUE_DATA0));
rt2x00_set_field32(®, TXCSR0_KICK_TX,
(queue == IEEE80211_TX_QUEUE_DATA1));
rt2x00_set_field32(®, TXCSR0_KICK_ATIM,
(queue == IEEE80211_TX_QUEUE_AFTER_BEACON));
rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
}
/*
* RX control handlers
*/
static void rt2500pci_fill_rxdone(struct data_entry *entry,
struct rxdata_entry_desc *desc)
{
__le32 *rxd = entry->priv;
u32 word0;
u32 word2;
rt2x00_desc_read(rxd, 0, &word0);
rt2x00_desc_read(rxd, 2, &word2);
desc->flags = 0;
if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
desc->flags |= RX_FLAG_FAILED_FCS_CRC;
if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
desc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
desc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
entry->ring->rt2x00dev->rssi_offset;
desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
desc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
}
/*
* Interrupt functions.
*/
static void rt2500pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue)
{
struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue);
struct data_entry *entry;
__le32 *txd;
u32 word;
int tx_status;
int retry;
while (!rt2x00_ring_empty(ring)) {
entry = rt2x00_get_data_entry_done(ring);
txd = entry->priv;
rt2x00_desc_read(txd, 0, &word);
if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
!rt2x00_get_field32(word, TXD_W0_VALID))
break;
/*
* Obtain the status about this packet.
*/
tx_status = rt2x00_get_field32(word, TXD_W0_RESULT);
retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
rt2x00pci_txdone(rt2x00dev, entry, tx_status, retry);
}
}
static irqreturn_t rt2500pci_interrupt(int irq, void *dev_instance)
{
struct rt2x00_dev *rt2x00dev = dev_instance;
u32 reg;
/*
* Get the interrupt sources & saved to local variable.
* Write register value back to clear pending interrupts.
*/
rt2x00pci_register_read(rt2x00dev, CSR7, ®);
rt2x00pci_register_write(rt2x00dev, CSR7, reg);
if (!reg)
return IRQ_NONE;
if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
/*
* Handle interrupts, walk through all bits
* and run the tasks, the bits are checked in order of
* priority.
*/
/*
* 1 - Beacon timer expired interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_TBCN_EXPIRE))
rt2x00lib_beacondone(rt2x00dev);
/*
* 2 - Rx ring done interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_RXDONE))
rt2x00pci_rxdone(rt2x00dev);
/*
* 3 - Atim ring transmit done interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_TXDONE_ATIMRING))
rt2500pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_AFTER_BEACON);
/*
* 4 - Priority ring transmit done interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING))
rt2500pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
/*
* 5 - Tx ring transmit done interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
rt2500pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA1);
return IRQ_HANDLED;
}
/*
* Device probe functions.
*/
static int rt2500pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
{
struct eeprom_93cx6 eeprom;
u32 reg;
u16 word;
u8 *mac;
rt2x00pci_register_read(rt2x00dev, CSR21, ®);
eeprom.data = rt2x00dev;
eeprom.register_read = rt2500pci_eepromregister_read;
eeprom.register_write = rt2500pci_eepromregister_write;
eeprom.width = rt2x00_get_field32(reg, CSR21_TYPE_93C46) ?
PCI_EEPROM_WIDTH_93C46 : PCI_EEPROM_WIDTH_93C66;
eeprom.reg_data_in = 0;
eeprom.reg_data_out = 0;
eeprom.reg_data_clock = 0;
eeprom.reg_chip_select = 0;
eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
EEPROM_SIZE / sizeof(u16));
/*
* Start validation of the data that has been read.
*/
mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
if (!is_valid_ether_addr(mac)) {
DECLARE_MAC_BUF(macbuf);
random_ether_addr(mac);
EEPROM(rt2x00dev, "MAC: %s\n",
print_mac(macbuf, mac));
}
rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
if (word == 0xffff) {
rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
ANTENNA_SW_DIVERSITY);
rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
ANTENNA_SW_DIVERSITY);
rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
LED_MODE_DEFAULT);
rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
}
rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
if (word == 0xffff) {
rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
}
rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
if (word == 0xffff) {
rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
DEFAULT_RSSI_OFFSET);
rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
}
return 0;
}
static int rt2500pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
u16 value;
u16 eeprom;
/*
* Read EEPROM word for configuration.
*/
rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
/*
* Identify RF chipset.
*/
value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
rt2x00pci_register_read(rt2x00dev, CSR0, ®);
rt2x00_set_chip(rt2x00dev, RT2560, value, reg);
if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
!rt2x00_rf(&rt2x00dev->chip, RF2523) &&
!rt2x00_rf(&rt2x00dev->chip, RF2524) &&
!rt2x00_rf(&rt2x00dev->chip, RF2525) &&
!rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
!rt2x00_rf(&rt2x00dev->chip, RF5222)) {
ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
return -ENODEV;
}
/*
* Identify default antenna configuration.
*/
rt2x00dev->default_ant.tx =
rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
rt2x00dev->default_ant.rx =
rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
/*
* Store led mode, for correct led behaviour.
*/
rt2x00dev->led_mode =
rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
/*
* Detect if this device has an hardware controlled radio.
*/
#ifdef CONFIG_RT2500PCI_RFKILL
if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
__set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
#endif /* CONFIG_RT2500PCI_RFKILL */
/*
* Check if the BBP tuning should be enabled.
*/
rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
__set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
/*
* Read the RSSI <-> dBm offset information.
*/
rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
rt2x00dev->rssi_offset =
rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
return 0;
}
/*
* RF value list for RF2522
* Supports: 2.4 GHz
*/
static const struct rf_channel rf_vals_bg_2522[] = {
{ 1, 0x00002050, 0x000c1fda, 0x00000101, 0 },
{ 2, 0x00002050, 0x000c1fee, 0x00000101, 0 },
{ 3, 0x00002050, 0x000c2002, 0x00000101, 0 },
{ 4, 0x00002050, 0x000c2016, 0x00000101, 0 },
{ 5, 0x00002050, 0x000c202a, 0x00000101, 0 },
{ 6, 0x00002050, 0x000c203e, 0x00000101, 0 },
{ 7, 0x00002050, 0x000c2052, 0x00000101, 0 },
{ 8, 0x00002050, 0x000c2066, 0x00000101, 0 },
{ 9, 0x00002050, 0x000c207a, 0x00000101, 0 },
{ 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
{ 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
{ 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
{ 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
{ 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
};
/*
* RF value list for RF2523
* Supports: 2.4 GHz
*/
static const struct rf_channel rf_vals_bg_2523[] = {
{ 1, 0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
{ 2, 0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
{ 3, 0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
{ 4, 0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
{ 5, 0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
{ 6, 0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
{ 7, 0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
{ 8, 0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
{ 9, 0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
{ 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
{ 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
{ 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
{ 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
{ 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
};
/*
* RF value list for RF2524
* Supports: 2.4 GHz
*/
static const struct rf_channel rf_vals_bg_2524[] = {
{ 1, 0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
{ 2, 0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
{ 3, 0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
{ 4, 0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
{ 5, 0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
{ 6, 0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
{ 7, 0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
{ 8, 0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
{ 9, 0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
{ 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
{ 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
{ 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
{ 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
{ 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
};
/*
* RF value list for RF2525
* Supports: 2.4 GHz
*/
static const struct rf_channel rf_vals_bg_2525[] = {
{ 1, 0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
{ 2, 0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
{ 3, 0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
{ 4, 0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
{ 5, 0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
{ 6, 0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
{ 7, 0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
{ 8, 0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
{ 9, 0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
{ 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
{ 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
{ 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
{ 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
{ 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
};
/*
* RF value list for RF2525e
* Supports: 2.4 GHz
*/
static const struct rf_channel rf_vals_bg_2525e[] = {
{ 1, 0x00022020, 0x00081136, 0x00060111, 0x00000a0b },
{ 2, 0x00022020, 0x0008113a, 0x00060111, 0x00000a0b },
{ 3, 0x00022020, 0x0008113e, 0x00060111, 0x00000a0b },
{ 4, 0x00022020, 0x00081182, 0x00060111, 0x00000a0b },
{ 5, 0x00022020, 0x00081186, 0x00060111, 0x00000a0b },
{ 6, 0x00022020, 0x0008118a, 0x00060111, 0x00000a0b },
{ 7, 0x00022020, 0x0008118e, 0x00060111, 0x00000a0b },
{ 8, 0x00022020, 0x00081192, 0x00060111, 0x00000a0b },
{ 9, 0x00022020, 0x00081196, 0x00060111, 0x00000a0b },
{ 10, 0x00022020, 0x0008119a, 0x00060111, 0x00000a0b },
{ 11, 0x00022020, 0x0008119e, 0x00060111, 0x00000a0b },
{ 12, 0x00022020, 0x000811a2, 0x00060111, 0x00000a0b },
{ 13, 0x00022020, 0x000811a6, 0x00060111, 0x00000a0b },
{ 14, 0x00022020, 0x000811ae, 0x00060111, 0x00000a1b },
};
/*
* RF value list for RF5222
* Supports: 2.4 GHz & 5.2 GHz
*/
static const struct rf_channel rf_vals_5222[] = {
{ 1, 0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
{ 2, 0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
{ 3, 0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
{ 4, 0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
{ 5, 0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
{ 6, 0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
{ 7, 0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
{ 8, 0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
{ 9, 0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
{ 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
{ 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
{ 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
{ 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
{ 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
/* 802.11 UNI / HyperLan 2 */
{ 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
{ 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
{ 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
{ 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
{ 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
{ 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
{ 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
{ 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
/* 802.11 HyperLan 2 */
{ 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
{ 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
{ 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
{ 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
{ 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
{ 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
{ 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
{ 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
{ 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
{ 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
/* 802.11 UNII */
{ 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
{ 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
{ 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
{ 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
{ 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
};
static void rt2500pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
{
struct hw_mode_spec *spec = &rt2x00dev->spec;
u8 *txpower;
unsigned int i;
/*
* Initialize all hw fields.
*/
rt2x00dev->hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
rt2x00dev->hw->extra_tx_headroom = 0;
rt2x00dev->hw->max_signal = MAX_SIGNAL;
rt2x00dev->hw->max_rssi = MAX_RX_SSI;
rt2x00dev->hw->queues = 2;
SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_pci(rt2x00dev)->dev);
SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
rt2x00_eeprom_addr(rt2x00dev,
EEPROM_MAC_ADDR_0));
/*
* Convert tx_power array in eeprom.
*/
txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
for (i = 0; i < 14; i++)
txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
/*
* Initialize hw_mode information.
*/
spec->num_modes = 2;
spec->num_rates = 12;
spec->tx_power_a = NULL;
spec->tx_power_bg = txpower;
spec->tx_power_default = DEFAULT_TXPOWER;
if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
spec->channels = rf_vals_bg_2522;
} else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
spec->channels = rf_vals_bg_2523;
} else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
spec->channels = rf_vals_bg_2524;
} else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
spec->channels = rf_vals_bg_2525;
} else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
spec->channels = rf_vals_bg_2525e;
} else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
spec->num_channels = ARRAY_SIZE(rf_vals_5222);
spec->channels = rf_vals_5222;
spec->num_modes = 3;
}
}
static int rt2500pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
/*
* Allocate eeprom data.
*/
retval = rt2500pci_validate_eeprom(rt2x00dev);
if (retval)
return retval;
retval = rt2500pci_init_eeprom(rt2x00dev);
if (retval)
return retval;
/*
* Initialize hw specifications.
*/
rt2500pci_probe_hw_mode(rt2x00dev);
/*
* This device requires the beacon ring
*/
__set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
/*
* Set the rssi offset.
*/
rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
return 0;
}
/*
* IEEE80211 stack callback functions.
*/
static void rt2500pci_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
int mc_count,
struct dev_addr_list *mc_list)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
u32 reg;
/*
* Mask off any flags we are going to ignore from
* the total_flags field.
*/
*total_flags &=
FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_PROMISC_IN_BSS;
/*
* Apply some rules to the filters:
* - Some filters imply different filters to be set.
* - Some things we can't filter out at all.
*/
if (mc_count)
*total_flags |= FIF_ALLMULTI;
if (*total_flags & FIF_OTHER_BSS ||
*total_flags & FIF_PROMISC_IN_BSS)
*total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
/*
* Check if there is any work left for us.
*/
if (rt2x00dev->packet_filter == *total_flags)
return;
rt2x00dev->packet_filter = *total_flags;
/*
* 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.
*/
rt2x00pci_register_read(rt2x00dev, RXCSR0, ®);
rt2x00_set_field32(®, RXCSR0_DROP_CRC,
!(*total_flags & FIF_FCSFAIL));
rt2x00_set_field32(®, RXCSR0_DROP_PHYSICAL,
!(*total_flags & FIF_PLCPFAIL));
rt2x00_set_field32(®, RXCSR0_DROP_CONTROL,
!(*total_flags & FIF_CONTROL));
rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME,
!(*total_flags & FIF_PROMISC_IN_BSS));
rt2x00_set_field32(®, RXCSR0_DROP_TODS,
!(*total_flags & FIF_PROMISC_IN_BSS));
rt2x00_set_field32(®, RXCSR0_DROP_VERSION_ERROR, 1);
rt2x00_set_field32(®, RXCSR0_DROP_MCAST,
!(*total_flags & FIF_ALLMULTI));
rt2x00_set_field32(®, RXCSR0_DROP_BCAST, 0);
rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
}
static int rt2500pci_set_retry_limit(struct ieee80211_hw *hw,
u32 short_retry, u32 long_retry)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR11, ®);
rt2x00_set_field32(®, CSR11_LONG_RETRY, long_retry);
rt2x00_set_field32(®, CSR11_SHORT_RETRY, short_retry);
rt2x00pci_register_write(rt2x00dev, CSR11, reg);
return 0;
}
static u64 rt2500pci_get_tsf(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
u64 tsf;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR17, ®);
tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32;
rt2x00pci_register_read(rt2x00dev, CSR16, ®);
tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER);
return tsf;
}
static void rt2500pci_reset_tsf(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
rt2x00pci_register_write(rt2x00dev, CSR16, 0);
rt2x00pci_register_write(rt2x00dev, CSR17, 0);
}
static int rt2500pci_tx_last_beacon(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR15, ®);
return rt2x00_get_field32(reg, CSR15_BEACON_SENT);
}
static const struct ieee80211_ops rt2500pci_mac80211_ops = {
.tx = rt2x00mac_tx,
.start = rt2x00mac_start,
.stop = rt2x00mac_stop,
.add_interface = rt2x00mac_add_interface,
.remove_interface = rt2x00mac_remove_interface,
.config = rt2x00mac_config,
.config_interface = rt2x00mac_config_interface,
.configure_filter = rt2500pci_configure_filter,
.get_stats = rt2x00mac_get_stats,
.set_retry_limit = rt2500pci_set_retry_limit,
.bss_info_changed = rt2x00mac_bss_info_changed,
.conf_tx = rt2x00mac_conf_tx,
.get_tx_stats = rt2x00mac_get_tx_stats,
.get_tsf = rt2500pci_get_tsf,
.reset_tsf = rt2500pci_reset_tsf,
.beacon_update = rt2x00pci_beacon_update,
.tx_last_beacon = rt2500pci_tx_last_beacon,
};
static const struct rt2x00lib_ops rt2500pci_rt2x00_ops = {
.irq_handler = rt2500pci_interrupt,
.probe_hw = rt2500pci_probe_hw,
.initialize = rt2x00pci_initialize,
.uninitialize = rt2x00pci_uninitialize,
.init_rxentry = rt2500pci_init_rxentry,
.init_txentry = rt2500pci_init_txentry,
.set_device_state = rt2500pci_set_device_state,
.rfkill_poll = rt2500pci_rfkill_poll,
.link_stats = rt2500pci_link_stats,
.reset_tuner = rt2500pci_reset_tuner,
.link_tuner = rt2500pci_link_tuner,
.write_tx_desc = rt2500pci_write_tx_desc,
.write_tx_data = rt2x00pci_write_tx_data,
.kick_tx_queue = rt2500pci_kick_tx_queue,
.fill_rxdone = rt2500pci_fill_rxdone,
.config_mac_addr = rt2500pci_config_mac_addr,
.config_bssid = rt2500pci_config_bssid,
.config_type = rt2500pci_config_type,
.config_preamble = rt2500pci_config_preamble,
.config = rt2500pci_config,
};
static const struct rt2x00_ops rt2500pci_ops = {
.name = KBUILD_MODNAME,
.rxd_size = RXD_DESC_SIZE,
.txd_size = TXD_DESC_SIZE,
.eeprom_size = EEPROM_SIZE,
.rf_size = RF_SIZE,
.lib = &rt2500pci_rt2x00_ops,
.hw = &rt2500pci_mac80211_ops,
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
.debugfs = &rt2500pci_rt2x00debug,
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
};
/*
* RT2500pci module information.
*/
static struct pci_device_id rt2500pci_device_table[] = {
{ PCI_DEVICE(0x1814, 0x0201), PCI_DEVICE_DATA(&rt2500pci_ops) },
{ 0, }
};
MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2500 PCI & PCMCIA Wireless LAN driver.");
MODULE_SUPPORTED_DEVICE("Ralink RT2560 PCI & PCMCIA chipset based cards");
MODULE_DEVICE_TABLE(pci, rt2500pci_device_table);
MODULE_LICENSE("GPL");
static struct pci_driver rt2500pci_driver = {
.name = KBUILD_MODNAME,
.id_table = rt2500pci_device_table,
.probe = rt2x00pci_probe,
.remove = __devexit_p(rt2x00pci_remove),
.suspend = rt2x00pci_suspend,
.resume = rt2x00pci_resume,
};
static int __init rt2500pci_init(void)
{
return pci_register_driver(&rt2500pci_driver);
}
static void __exit rt2500pci_exit(void)
{
pci_unregister_driver(&rt2500pci_driver);
}
module_init(rt2500pci_init);
module_exit(rt2500pci_exit);
