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OpenCloudOS-Kernel/drivers/net/wireless/rt2x00/rt2400pci.c

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/*
Copyright (C) 2004 - 2008 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: rt2400pci
Abstract: rt2400pci device specific routines.
Supported chipsets: RT2460.
*/
#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 "rt2400pci.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 rt2400pci_bbp_check(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
unsigned int i;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2x00pci_register_read(rt2x00dev, BBPCSR, &reg);
if (!rt2x00_get_field32(reg, BBPCSR_BUSY))
break;
udelay(REGISTER_BUSY_DELAY);
}
return reg;
}
static void rt2400pci_bbp_write(struct rt2x00_dev *rt2x00dev,
const unsigned int word, const u8 value)
{
u32 reg;
/*
* Wait until the BBP becomes ready.
*/
reg = rt2400pci_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(&reg, BBPCSR_VALUE, value);
rt2x00_set_field32(&reg, BBPCSR_REGNUM, word);
rt2x00_set_field32(&reg, BBPCSR_BUSY, 1);
rt2x00_set_field32(&reg, BBPCSR_WRITE_CONTROL, 1);
rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
}
static void rt2400pci_bbp_read(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u8 *value)
{
u32 reg;
/*
* Wait until the BBP becomes ready.
*/
reg = rt2400pci_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(&reg, BBPCSR_REGNUM, word);
rt2x00_set_field32(&reg, BBPCSR_BUSY, 1);
rt2x00_set_field32(&reg, BBPCSR_WRITE_CONTROL, 0);
rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
/*
* Wait until the BBP becomes ready.
*/
reg = rt2400pci_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 rt2400pci_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, &reg);
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(&reg, RFCSR_VALUE, value);
rt2x00_set_field32(&reg, RFCSR_NUMBER_OF_BITS, 20);
rt2x00_set_field32(&reg, RFCSR_IF_SELECT, 0);
rt2x00_set_field32(&reg, RFCSR_BUSY, 1);
rt2x00pci_register_write(rt2x00dev, RFCSR, reg);
rt2x00_rf_write(rt2x00dev, word, value);
}
static void rt2400pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
{
struct rt2x00_dev *rt2x00dev = eeprom->data;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
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 rt2400pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
{
struct rt2x00_dev *rt2x00dev = eeprom->data;
u32 reg = 0;
rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_IN, !!eeprom->reg_data_in);
rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_OUT, !!eeprom->reg_data_out);
rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_CLOCK,
!!eeprom->reg_data_clock);
rt2x00_set_field32(&reg, 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 rt2400pci_read_csr(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u32 *data)
{
rt2x00pci_register_read(rt2x00dev, CSR_OFFSET(word), data);
}
static void rt2400pci_write_csr(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u32 data)
{
rt2x00pci_register_write(rt2x00dev, CSR_OFFSET(word), data);
}
static const struct rt2x00debug rt2400pci_rt2x00debug = {
.owner = THIS_MODULE,
.csr = {
.read = rt2400pci_read_csr,
.write = rt2400pci_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 = rt2400pci_bbp_read,
.write = rt2400pci_bbp_write,
.word_size = sizeof(u8),
.word_count = BBP_SIZE / sizeof(u8),
},
.rf = {
.read = rt2x00_rf_read,
.write = rt2400pci_rf_write,
.word_size = sizeof(u32),
.word_count = RF_SIZE / sizeof(u32),
},
};
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
#ifdef CONFIG_RT2400PCI_RFKILL
static int rt2400pci_rfkill_poll(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, GPIOCSR, &reg);
return rt2x00_get_field32(reg, GPIOCSR_BIT0);
}
#else
#define rt2400pci_rfkill_poll NULL
#endif /* CONFIG_RT2400PCI_RFKILL */
#ifdef CONFIG_RT2400PCI_LEDS
static void rt2400pci_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;
u32 reg;
rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
rt2x00_set_field32(&reg, LEDCSR_LINK, enabled);
else if (led->type == LED_TYPE_ACTIVITY)
rt2x00_set_field32(&reg, LEDCSR_ACTIVITY, enabled);
rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
}
static int rt2400pci_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);
u32 reg;
rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
rt2x00_set_field32(&reg, LEDCSR_ON_PERIOD, *delay_on);
rt2x00_set_field32(&reg, LEDCSR_OFF_PERIOD, *delay_off);
rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
return 0;
}
#endif /* CONFIG_RT2400PCI_LEDS */
/*
* Configuration handlers.
*/
static void rt2400pci_config_filter(struct rt2x00_dev *rt2x00dev,
const unsigned int filter_flags)
{
u32 reg;
/*
* Start configuration steps.
* Note that the version error will always be dropped
* since there is no filter for it at this time.
*/
rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
rt2x00_set_field32(&reg, RXCSR0_DROP_CRC,
!(filter_flags & FIF_FCSFAIL));
rt2x00_set_field32(&reg, RXCSR0_DROP_PHYSICAL,
!(filter_flags & FIF_PLCPFAIL));
rt2x00_set_field32(&reg, RXCSR0_DROP_CONTROL,
!(filter_flags & FIF_CONTROL));
rt2x00_set_field32(&reg, RXCSR0_DROP_NOT_TO_ME,
!(filter_flags & FIF_PROMISC_IN_BSS));
rt2x00_set_field32(&reg, RXCSR0_DROP_TODS,
!(filter_flags & FIF_PROMISC_IN_BSS) &&
!rt2x00dev->intf_ap_count);
rt2x00_set_field32(&reg, RXCSR0_DROP_VERSION_ERROR, 1);
rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
}
static void rt2400pci_config_intf(struct rt2x00_dev *rt2x00dev,
struct rt2x00_intf *intf,
struct rt2x00intf_conf *conf,
const unsigned int flags)
{
unsigned int bcn_preload;
u32 reg;
if (flags & CONFIG_UPDATE_TYPE) {
/*
* Enable beacon config
*/
bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
rt2x00_set_field32(&reg, BCNCSR1_PRELOAD, bcn_preload);
rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
/*
* Enable synchronisation.
*/
rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
rt2x00_set_field32(&reg, CSR14_TSF_SYNC, conf->sync);
rt2x00_set_field32(&reg, CSR14_TBCN, 1);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
}
if (flags & CONFIG_UPDATE_MAC)
rt2x00pci_register_multiwrite(rt2x00dev, CSR3,
conf->mac, sizeof(conf->mac));
if (flags & CONFIG_UPDATE_BSSID)
rt2x00pci_register_multiwrite(rt2x00dev, CSR5,
conf->bssid, sizeof(conf->bssid));
}
static void rt2400pci_config_erp(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_erp *erp)
{
int preamble_mask;
u32 reg;
/*
* When short preamble is enabled, we should set bit 0x08
*/
preamble_mask = erp->short_preamble << 3;
rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT,
erp->ack_timeout);
rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
erp->ack_consume_time);
rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR2, &reg);
rt2x00_set_field32(&reg, ARCSR2_SIGNAL, 0x00);
rt2x00_set_field32(&reg, ARCSR2_SERVICE, 0x04);
rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 10));
rt2x00pci_register_write(rt2x00dev, ARCSR2, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR3, &reg);
rt2x00_set_field32(&reg, ARCSR3_SIGNAL, 0x01 | preamble_mask);
rt2x00_set_field32(&reg, ARCSR3_SERVICE, 0x04);
rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 20));
rt2x00pci_register_write(rt2x00dev, ARCSR3, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR4, &reg);
rt2x00_set_field32(&reg, ARCSR4_SIGNAL, 0x02 | preamble_mask);
rt2x00_set_field32(&reg, ARCSR4_SERVICE, 0x04);
rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 55));
rt2x00pci_register_write(rt2x00dev, ARCSR4, reg);
rt2x00pci_register_read(rt2x00dev, ARCSR5, &reg);
rt2x00_set_field32(&reg, ARCSR5_SIGNAL, 0x03 | preamble_mask);
rt2x00_set_field32(&reg, ARCSR5_SERVICE, 0x84);
rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 110));
rt2x00pci_register_write(rt2x00dev, ARCSR5, reg);
}
static void rt2400pci_config_phymode(struct rt2x00_dev *rt2x00dev,
const int basic_rate_mask)
{
rt2x00pci_register_write(rt2x00dev, ARCSR1, basic_rate_mask);
}
static void rt2400pci_config_channel(struct rt2x00_dev *rt2x00dev,
struct rf_channel *rf)
{
/*
* Switch on tuning bits.
*/
rt2x00_set_field32(&rf->rf1, RF1_TUNER, 1);
rt2x00_set_field32(&rf->rf3, RF3_TUNER, 1);
rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
/*
* RF2420 chipset don't need any additional actions.
*/
if (rt2x00_rf(&rt2x00dev->chip, RF2420))
return;
/*
* For the RT2421 chipsets we need to write an invalid
* reference clock rate to activate auto_tune.
* After that we set the value back to the correct channel.
*/
rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
rt2400pci_rf_write(rt2x00dev, 2, 0x000c2a32);
rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
msleep(1);
rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
msleep(1);
/*
* Switch off tuning bits.
*/
rt2x00_set_field32(&rf->rf1, RF1_TUNER, 0);
rt2x00_set_field32(&rf->rf3, RF3_TUNER, 0);
rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
/*
* Clear false CRC during channel switch.
*/
rt2x00pci_register_read(rt2x00dev, CNT0, &rf->rf1);
}
static void rt2400pci_config_txpower(struct rt2x00_dev *rt2x00dev, int txpower)
{
rt2400pci_bbp_write(rt2x00dev, 3, TXPOWER_TO_DEV(txpower));
}
static void rt2400pci_config_antenna(struct rt2x00_dev *rt2x00dev,
struct antenna_setup *ant)
{
u8 r1;
u8 r4;
/*
* 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);
rt2400pci_bbp_read(rt2x00dev, 4, &r4);
rt2400pci_bbp_read(rt2x00dev, 1, &r1);
/*
* Configure the TX antenna.
*/
switch (ant->tx) {
case ANTENNA_HW_DIVERSITY:
rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 1);
break;
case ANTENNA_A:
rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 0);
break;
case ANTENNA_B:
default:
rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 2);
break;
}
/*
* Configure the RX antenna.
*/
switch (ant->rx) {
case ANTENNA_HW_DIVERSITY:
rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
break;
case ANTENNA_A:
rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 0);
break;
case ANTENNA_B:
default:
rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
break;
}
rt2400pci_bbp_write(rt2x00dev, 4, r4);
rt2400pci_bbp_write(rt2x00dev, 1, r1);
}
static void rt2400pci_config_duration(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
rt2x00_set_field32(&reg, CSR11_SLOT_TIME, libconf->slot_time);
rt2x00pci_register_write(rt2x00dev, CSR11, reg);
rt2x00pci_register_read(rt2x00dev, CSR18, &reg);
rt2x00_set_field32(&reg, CSR18_SIFS, libconf->sifs);
rt2x00_set_field32(&reg, CSR18_PIFS, libconf->pifs);
rt2x00pci_register_write(rt2x00dev, CSR18, reg);
rt2x00pci_register_read(rt2x00dev, CSR19, &reg);
rt2x00_set_field32(&reg, CSR19_DIFS, libconf->difs);
rt2x00_set_field32(&reg, CSR19_EIFS, libconf->eifs);
rt2x00pci_register_write(rt2x00dev, CSR19, reg);
rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
rt2x00pci_register_read(rt2x00dev, CSR12, &reg);
rt2x00_set_field32(&reg, CSR12_BEACON_INTERVAL,
libconf->conf->beacon_int * 16);
rt2x00_set_field32(&reg, CSR12_CFP_MAX_DURATION,
libconf->conf->beacon_int * 16);
rt2x00pci_register_write(rt2x00dev, CSR12, reg);
}
static void rt2400pci_config(struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
const unsigned int flags)
{
if (flags & CONFIG_UPDATE_PHYMODE)
rt2400pci_config_phymode(rt2x00dev, libconf->basic_rates);
if (flags & CONFIG_UPDATE_CHANNEL)
rt2400pci_config_channel(rt2x00dev, &libconf->rf);
if (flags & CONFIG_UPDATE_TXPOWER)
rt2400pci_config_txpower(rt2x00dev,
libconf->conf->power_level);
if (flags & CONFIG_UPDATE_ANTENNA)
rt2400pci_config_antenna(rt2x00dev, &libconf->ant);
if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
rt2400pci_config_duration(rt2x00dev, libconf);
}
static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev,
const int cw_min, const int cw_max)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
rt2x00_set_field32(&reg, CSR11_CWMIN, cw_min);
rt2x00_set_field32(&reg, CSR11_CWMAX, cw_max);
rt2x00pci_register_write(rt2x00dev, CSR11, reg);
}
/*
* Link tuning
*/
static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev,
struct link_qual *qual)
{
u32 reg;
u8 bbp;
/*
* Update FCS error count from register.
*/
rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR);
/*
* Update False CCA count from register.
*/
rt2400pci_bbp_read(rt2x00dev, 39, &bbp);
qual->false_cca = bbp;
}
static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev)
{
rt2400pci_bbp_write(rt2x00dev, 13, 0x08);
rt2x00dev->link.vgc_level = 0x08;
}
static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev)
{
u8 reg;
/*
* The link tuner should not run longer then 60 seconds,
* and should run once every 2 seconds.
*/
if (rt2x00dev->link.count > 60 || !(rt2x00dev->link.count & 1))
return;
/*
* Base r13 link tuning on the false cca count.
*/
rt2400pci_bbp_read(rt2x00dev, 13, &reg);
if (rt2x00dev->link.qual.false_cca > 512 && reg < 0x20) {
rt2400pci_bbp_write(rt2x00dev, 13, ++reg);
rt2x00dev->link.vgc_level = reg;
} else if (rt2x00dev->link.qual.false_cca < 100 && reg > 0x08) {
rt2400pci_bbp_write(rt2x00dev, 13, --reg);
rt2x00dev->link.vgc_level = reg;
}
}
/*
* Initialization functions.
*/
static void rt2400pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
struct queue_entry *entry)
{
struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
u32 word;
rt2x00_desc_read(priv_rx->desc, 2, &word);
rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH,
entry->queue->data_size);
rt2x00_desc_write(priv_rx->desc, 2, word);
rt2x00_desc_read(priv_rx->desc, 1, &word);
rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, priv_rx->data_dma);
rt2x00_desc_write(priv_rx->desc, 1, word);
rt2x00_desc_read(priv_rx->desc, 0, &word);
rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
rt2x00_desc_write(priv_rx->desc, 0, word);
}
static void rt2400pci_init_txentry(struct rt2x00_dev *rt2x00dev,
struct queue_entry *entry)
{
struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
u32 word;
rt2x00_desc_read(priv_tx->desc, 1, &word);
rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, priv_tx->data_dma);
rt2x00_desc_write(priv_tx->desc, 1, word);
rt2x00_desc_read(priv_tx->desc, 2, &word);
rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH,
entry->queue->data_size);
rt2x00_desc_write(priv_tx->desc, 2, word);
rt2x00_desc_read(priv_tx->desc, 0, &word);
rt2x00_set_field32(&word, TXD_W0_VALID, 0);
rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
rt2x00_desc_write(priv_tx->desc, 0, word);
}
static int rt2400pci_init_queues(struct rt2x00_dev *rt2x00dev)
{
struct queue_entry_priv_pci_rx *priv_rx;
struct queue_entry_priv_pci_tx *priv_tx;
u32 reg;
/*
* Initialize registers.
*/
rt2x00pci_register_read(rt2x00dev, TXCSR2, &reg);
rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size);
rt2x00_set_field32(&reg, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit);
rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM, rt2x00dev->bcn[1].limit);
rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit);
rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
priv_tx = rt2x00dev->tx[1].entries[0].priv_data;
rt2x00pci_register_read(rt2x00dev, TXCSR3, &reg);
rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER,
priv_tx->desc_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
priv_tx = rt2x00dev->tx[0].entries[0].priv_data;
rt2x00pci_register_read(rt2x00dev, TXCSR5, &reg);
rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER,
priv_tx->desc_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
priv_tx = rt2x00dev->bcn[1].entries[0].priv_data;
rt2x00pci_register_read(rt2x00dev, TXCSR4, &reg);
rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER,
priv_tx->desc_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
priv_tx = rt2x00dev->bcn[0].entries[0].priv_data;
rt2x00pci_register_read(rt2x00dev, TXCSR6, &reg);
rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER,
priv_tx->desc_dma);
rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
rt2x00pci_register_read(rt2x00dev, RXCSR1, &reg);
rt2x00_set_field32(&reg, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->limit);
rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
priv_rx = rt2x00dev->rx->entries[0].priv_data;
rt2x00pci_register_read(rt2x00dev, RXCSR2, &reg);
rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER, priv_rx->desc_dma);
rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
return 0;
}
static int rt2400pci_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, 0x00023f20);
rt2x00pci_register_write(rt2x00dev, PSCSR3, 0x00000002);
rt2x00pci_register_read(rt2x00dev, TIMECSR, &reg);
rt2x00_set_field32(&reg, TIMECSR_US_COUNT, 33);
rt2x00_set_field32(&reg, TIMECSR_US_64_COUNT, 63);
rt2x00_set_field32(&reg, TIMECSR_BEACON_EXPECT, 0);
rt2x00pci_register_write(rt2x00dev, TIMECSR, reg);
rt2x00pci_register_read(rt2x00dev, CSR9, &reg);
rt2x00_set_field32(&reg, CSR9_MAX_FRAME_UNIT,
(rt2x00dev->rx->data_size / 128));
rt2x00pci_register_write(rt2x00dev, CSR9, reg);
rt2x00pci_register_write(rt2x00dev, CNT3, 0x3f080000);
rt2x00pci_register_read(rt2x00dev, ARCSR0, &reg);
rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA0, 133);
rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID0, 134);
rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA1, 136);
rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID1, 135);
rt2x00pci_register_write(rt2x00dev, ARCSR0, reg);
rt2x00pci_register_read(rt2x00dev, RXCSR3, &reg);
rt2x00_set_field32(&reg, RXCSR3_BBP_ID0, 3); /* Tx power.*/
rt2x00_set_field32(&reg, RXCSR3_BBP_ID0_VALID, 1);
rt2x00_set_field32(&reg, RXCSR3_BBP_ID1, 32); /* Signal */
rt2x00_set_field32(&reg, RXCSR3_BBP_ID1_VALID, 1);
rt2x00_set_field32(&reg, RXCSR3_BBP_ID2, 36); /* Rssi */
rt2x00_set_field32(&reg, RXCSR3_BBP_ID2_VALID, 1);
rt2x00pci_register_write(rt2x00dev, RXCSR3, reg);
rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
return -EBUSY;
rt2x00pci_register_write(rt2x00dev, MACCSR0, 0x00217223);
rt2x00pci_register_write(rt2x00dev, MACCSR1, 0x00235518);
rt2x00pci_register_read(rt2x00dev, MACCSR2, &reg);
rt2x00_set_field32(&reg, MACCSR2_DELAY, 64);
rt2x00pci_register_write(rt2x00dev, MACCSR2, reg);
rt2x00pci_register_read(rt2x00dev, RALINKCSR, &reg);
rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA0, 17);
rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID0, 154);
rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA1, 0);
rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID1, 154);
rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg);
rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 1);
rt2x00_set_field32(&reg, CSR1_BBP_RESET, 0);
rt2x00_set_field32(&reg, CSR1_HOST_READY, 0);
rt2x00pci_register_write(rt2x00dev, CSR1, reg);
rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 0);
rt2x00_set_field32(&reg, 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, &reg);
rt2x00pci_register_read(rt2x00dev, CNT4, &reg);
return 0;
}
static int rt2400pci_init_bbp(struct rt2x00_dev *rt2x00dev)
{
unsigned int i;
u16 eeprom;
u8 reg_id;
u8 value;
for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
rt2400pci_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:
rt2400pci_bbp_write(rt2x00dev, 1, 0x00);
rt2400pci_bbp_write(rt2x00dev, 3, 0x27);
rt2400pci_bbp_write(rt2x00dev, 4, 0x08);
rt2400pci_bbp_write(rt2x00dev, 10, 0x0f);
rt2400pci_bbp_write(rt2x00dev, 15, 0x72);
rt2400pci_bbp_write(rt2x00dev, 16, 0x74);
rt2400pci_bbp_write(rt2x00dev, 17, 0x20);
rt2400pci_bbp_write(rt2x00dev, 18, 0x72);
rt2400pci_bbp_write(rt2x00dev, 19, 0x0b);
rt2400pci_bbp_write(rt2x00dev, 20, 0x00);
rt2400pci_bbp_write(rt2x00dev, 28, 0x11);
rt2400pci_bbp_write(rt2x00dev, 29, 0x04);
rt2400pci_bbp_write(rt2x00dev, 30, 0x21);
rt2400pci_bbp_write(rt2x00dev, 31, 0x00);
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);
rt2400pci_bbp_write(rt2x00dev, reg_id, value);
}
}
return 0;
}
/*
* Device state switch handlers.
*/
static void rt2400pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
u32 reg;
rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
rt2x00_set_field32(&reg, RXCSR0_DISABLE_RX,
state == STATE_RADIO_RX_OFF);
rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
}
static void rt2400pci_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, &reg);
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, &reg);
rt2x00_set_field32(&reg, CSR8_TBCN_EXPIRE, mask);
rt2x00_set_field32(&reg, CSR8_TXDONE_TXRING, mask);
rt2x00_set_field32(&reg, CSR8_TXDONE_ATIMRING, mask);
rt2x00_set_field32(&reg, CSR8_TXDONE_PRIORING, mask);
rt2x00_set_field32(&reg, CSR8_RXDONE, mask);
rt2x00pci_register_write(rt2x00dev, CSR8, reg);
}
static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev)
{
/*
* Initialize all registers.
*/
if (rt2400pci_init_queues(rt2x00dev) ||
rt2400pci_init_registers(rt2x00dev) ||
rt2400pci_init_bbp(rt2x00dev)) {
ERROR(rt2x00dev, "Register initialization failed.\n");
return -EIO;
}
/*
* Enable interrupts.
*/
rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_ON);
return 0;
}
static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0);
/*
* Disable synchronisation.
*/
rt2x00pci_register_write(rt2x00dev, CSR14, 0);
/*
* Cancel RX and TX.
*/
rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
rt2x00_set_field32(&reg, TXCSR0_ABORT, 1);
rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
/*
* Disable interrupts.
*/
rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_OFF);
}
static int rt2400pci_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, &reg);
rt2x00_set_field32(&reg, PWRCSR1_SET_STATE, 1);
rt2x00_set_field32(&reg, PWRCSR1_BBP_DESIRE_STATE, state);
rt2x00_set_field32(&reg, PWRCSR1_RF_DESIRE_STATE, state);
rt2x00_set_field32(&reg, 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, &reg);
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 rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
int retval = 0;
switch (state) {
case STATE_RADIO_ON:
retval = rt2400pci_enable_radio(rt2x00dev);
break;
case STATE_RADIO_OFF:
rt2400pci_disable_radio(rt2x00dev);
break;
case STATE_RADIO_RX_ON:
case STATE_RADIO_RX_ON_LINK:
rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
break;
case STATE_RADIO_RX_OFF:
case STATE_RADIO_RX_OFF_LINK:
rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
break;
case STATE_DEEP_SLEEP:
case STATE_SLEEP:
case STATE_STANDBY:
case STATE_AWAKE:
retval = rt2400pci_set_state(rt2x00dev, state);
break;
default:
retval = -ENOTSUPP;
break;
}
return retval;
}
/*
* TX descriptor initialization
*/
static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
struct sk_buff *skb,
struct txentry_desc *txdesc,
struct ieee80211_tx_control *control)
{
struct skb_frame_desc *skbdesc = get_skb_frame_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_DATABYTE_COUNT, skbdesc->data_len);
rt2x00_desc_write(txd, 2, word);
rt2x00_desc_read(txd, 3, &word);
rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->signal);
rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_REGNUM, 5);
rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_BUSY, 1);
rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, txdesc->service);
rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_REGNUM, 6);
rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_BUSY, 1);
rt2x00_desc_write(txd, 3, word);
rt2x00_desc_read(txd, 4, &word);
rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, txdesc->length_low);
rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_REGNUM, 8);
rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_BUSY, 1);
rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, txdesc->length_high);
rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_REGNUM, 7);
rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_BUSY, 1);
rt2x00_desc_write(txd, 4, 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, &txdesc->flags));
rt2x00_set_field32(&word, TXD_W0_ACK,
test_bit(ENTRY_TXD_ACK, &txdesc->flags));
rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
rt2x00_set_field32(&word, TXD_W0_RTS,
test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags));
rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
!!(control->flags &
IEEE80211_TXCTL_LONG_RETRY_LIMIT));
rt2x00_desc_write(txd, 0, word);
}
/*
* TX data initialization
*/
static void rt2400pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
const unsigned int queue)
{
u32 reg;
if (queue == RT2X00_BCN_QUEUE_BEACON) {
rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
if (!rt2x00_get_field32(reg, CSR14_BEACON_GEN)) {
rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
rt2x00_set_field32(&reg, CSR14_TBCN, 1);
rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 1);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
}
return;
}
rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
rt2x00_set_field32(&reg, TXCSR0_KICK_PRIO,
(queue == IEEE80211_TX_QUEUE_DATA0));
rt2x00_set_field32(&reg, TXCSR0_KICK_TX,
(queue == IEEE80211_TX_QUEUE_DATA1));
rt2x00_set_field32(&reg, TXCSR0_KICK_ATIM,
(queue == RT2X00_BCN_QUEUE_ATIM));
rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
}
/*
* RX control handlers
*/
static void rt2400pci_fill_rxdone(struct queue_entry *entry,
struct rxdone_entry_desc *rxdesc)
{
struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
u32 word0;
u32 word2;
u32 word3;
rt2x00_desc_read(priv_rx->desc, 0, &word0);
rt2x00_desc_read(priv_rx->desc, 2, &word2);
rt2x00_desc_read(priv_rx->desc, 3, &word3);
rxdesc->flags = 0;
if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
/*
* Obtain the status about this packet.
* The signal is the PLCP value, and needs to be stripped
* of the preamble bit (0x08).
*/
rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL) & ~0x08;
rxdesc->rssi = rt2x00_get_field32(word2, RXD_W3_RSSI) -
entry->queue->rt2x00dev->rssi_offset;
rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
rxdesc->dev_flags = RXDONE_SIGNAL_PLCP;
if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
rxdesc->dev_flags |= RXDONE_MY_BSS;
}
/*
* Interrupt functions.
*/
static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
const enum ieee80211_tx_queue queue_idx)
{
struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
struct queue_entry_priv_pci_tx *priv_tx;
struct queue_entry *entry;
struct txdone_entry_desc txdesc;
u32 word;
while (!rt2x00queue_empty(queue)) {
entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
priv_tx = entry->priv_data;
rt2x00_desc_read(priv_tx->desc, 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.
*/
txdesc.status = rt2x00_get_field32(word, TXD_W0_RESULT);
txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
rt2x00pci_txdone(rt2x00dev, entry, &txdesc);
}
}
static irqreturn_t rt2400pci_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, &reg);
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))
rt2400pci_txdone(rt2x00dev, RT2X00_BCN_QUEUE_ATIM);
/*
* 4 - Priority ring transmit done interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING))
rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
/*
* 5 - Tx ring transmit done interrupt.
*/
if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA1);
return IRQ_HANDLED;
}
/*
* Device probe functions.
*/
static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
{
struct eeprom_93cx6 eeprom;
u32 reg;
u16 word;
u8 *mac;
rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
eeprom.data = rt2x00dev;
eeprom.register_read = rt2400pci_eepromregister_read;
eeprom.register_write = rt2400pci_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) {
ERROR(rt2x00dev, "Invalid EEPROM data detected.\n");
return -EINVAL;
}
return 0;
}
static int rt2400pci_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, &reg);
rt2x00_set_chip(rt2x00dev, RT2460, value, reg);
if (!rt2x00_rf(&rt2x00dev->chip, RF2420) &&
!rt2x00_rf(&rt2x00dev->chip, RF2421)) {
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);
/*
* When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
* I am not 100% sure about this, but the legacy drivers do not
* indicate antenna swapping in software is required when
* diversity is enabled.
*/
if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
/*
* Store led mode, for correct led behaviour.
*/
#ifdef CONFIG_RT2400PCI_LEDS
value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
rt2x00dev->led_radio.rt2x00dev = rt2x00dev;
rt2x00dev->led_radio.type = LED_TYPE_RADIO;
rt2x00dev->led_radio.led_dev.brightness_set =
rt2400pci_brightness_set;
rt2x00dev->led_radio.led_dev.blink_set =
rt2400pci_blink_set;
rt2x00dev->led_radio.flags = LED_INITIALIZED;
if (value == LED_MODE_TXRX_ACTIVITY) {
rt2x00dev->led_qual.rt2x00dev = rt2x00dev;
rt2x00dev->led_qual.type = LED_TYPE_ACTIVITY;
rt2x00dev->led_qual.led_dev.brightness_set =
rt2400pci_brightness_set;
rt2x00dev->led_qual.led_dev.blink_set =
rt2400pci_blink_set;
rt2x00dev->led_qual.flags = LED_INITIALIZED;
}
#endif /* CONFIG_RT2400PCI_LEDS */
/*
* Detect if this device has an hardware controlled radio.
*/
#ifdef CONFIG_RT2400PCI_RFKILL
if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
__set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
#endif /* CONFIG_RT2400PCI_RFKILL */
/*
* Check if the BBP tuning should be enabled.
*/
if (!rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
__set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
return 0;
}
/*
* RF value list for RF2420 & RF2421
* Supports: 2.4 GHz
*/
static const struct rf_channel rf_vals_bg[] = {
{ 1, 0x00022058, 0x000c1fda, 0x00000101, 0 },
{ 2, 0x00022058, 0x000c1fee, 0x00000101, 0 },
{ 3, 0x00022058, 0x000c2002, 0x00000101, 0 },
{ 4, 0x00022058, 0x000c2016, 0x00000101, 0 },
{ 5, 0x00022058, 0x000c202a, 0x00000101, 0 },
{ 6, 0x00022058, 0x000c203e, 0x00000101, 0 },
{ 7, 0x00022058, 0x000c2052, 0x00000101, 0 },
{ 8, 0x00022058, 0x000c2066, 0x00000101, 0 },
{ 9, 0x00022058, 0x000c207a, 0x00000101, 0 },
{ 10, 0x00022058, 0x000c208e, 0x00000101, 0 },
{ 11, 0x00022058, 0x000c20a2, 0x00000101, 0 },
{ 12, 0x00022058, 0x000c20b6, 0x00000101, 0 },
{ 13, 0x00022058, 0x000c20ca, 0x00000101, 0 },
{ 14, 0x00022058, 0x000c20fa, 0x00000101, 0 },
};
static void rt2400pci_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->supported_bands = SUPPORT_BAND_2GHZ;
spec->supported_rates = SUPPORT_RATE_CCK;
spec->tx_power_a = NULL;
spec->tx_power_bg = txpower;
spec->tx_power_default = DEFAULT_TXPOWER;
spec->num_channels = ARRAY_SIZE(rf_vals_bg);
spec->channels = rf_vals_bg;
}
static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
{
int retval;
/*
* Allocate eeprom data.
*/
retval = rt2400pci_validate_eeprom(rt2x00dev);
if (retval)
return retval;
retval = rt2400pci_init_eeprom(rt2x00dev);
if (retval)
return retval;
/*
* Initialize hw specifications.
*/
rt2400pci_probe_hw_mode(rt2x00dev);
/*
* This device requires the atim queue
*/
__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
/*
* Set the rssi offset.
*/
rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
return 0;
}
/*
* IEEE80211 stack callback functions.
*/
static int rt2400pci_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, &reg);
rt2x00_set_field32(&reg, CSR11_LONG_RETRY, long_retry);
rt2x00_set_field32(&reg, CSR11_SHORT_RETRY, short_retry);
rt2x00pci_register_write(rt2x00dev, CSR11, reg);
return 0;
}
static int rt2400pci_conf_tx(struct ieee80211_hw *hw,
int queue,
const struct ieee80211_tx_queue_params *params)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
/*
* We don't support variating cw_min and cw_max variables
* per queue. So by default we only configure the TX queue,
* and ignore all other configurations.
*/
if (queue != IEEE80211_TX_QUEUE_DATA0)
return -EINVAL;
if (rt2x00mac_conf_tx(hw, queue, params))
return -EINVAL;
/*
* Write configuration to register.
*/
rt2400pci_config_cw(rt2x00dev,
rt2x00dev->tx->cw_min, rt2x00dev->tx->cw_max);
return 0;
}
static u64 rt2400pci_get_tsf(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
u64 tsf;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR17, &reg);
tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32;
rt2x00pci_register_read(rt2x00dev, CSR16, &reg);
tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER);
return tsf;
}
static int rt2400pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ieee80211_tx_control *control)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct queue_entry_priv_pci_tx *priv_tx;
struct skb_frame_desc *skbdesc;
u32 reg;
if (unlikely(!intf->beacon))
return -ENOBUFS;
priv_tx = intf->beacon->priv_data;
/*
* Fill in skb descriptor
*/
skbdesc = get_skb_frame_desc(skb);
memset(skbdesc, 0, sizeof(*skbdesc));
skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
skbdesc->data = skb->data;
skbdesc->data_len = skb->len;
skbdesc->desc = priv_tx->desc;
skbdesc->desc_len = intf->beacon->queue->desc_size;
skbdesc->entry = intf->beacon;
/*
* Disable beaconing while we are reloading the beacon data,
* otherwise we might be sending out invalid data.
*/
rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 0);
rt2x00_set_field32(&reg, CSR14_TBCN, 0);
rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
/*
* mac80211 doesn't provide the control->queue variable
* for beacons. Set our own queue identification so
* it can be used during descriptor initialization.
*/
control->queue = RT2X00_BCN_QUEUE_BEACON;
rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
/*
* Enable beacon generation.
* Write entire beacon with descriptor to register,
* and kick the beacon generator.
*/
memcpy(priv_tx->data, skb->data, skb->len);
rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue);
return 0;
}
static int rt2400pci_tx_last_beacon(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
u32 reg;
rt2x00pci_register_read(rt2x00dev, CSR15, &reg);
return rt2x00_get_field32(reg, CSR15_BEACON_SENT);
}
static const struct ieee80211_ops rt2400pci_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 = rt2x00mac_configure_filter,
.get_stats = rt2x00mac_get_stats,
.set_retry_limit = rt2400pci_set_retry_limit,
.bss_info_changed = rt2x00mac_bss_info_changed,
.conf_tx = rt2400pci_conf_tx,
.get_tx_stats = rt2x00mac_get_tx_stats,
.get_tsf = rt2400pci_get_tsf,
.beacon_update = rt2400pci_beacon_update,
.tx_last_beacon = rt2400pci_tx_last_beacon,
};
static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
.irq_handler = rt2400pci_interrupt,
.probe_hw = rt2400pci_probe_hw,
.initialize = rt2x00pci_initialize,
.uninitialize = rt2x00pci_uninitialize,
.init_rxentry = rt2400pci_init_rxentry,
.init_txentry = rt2400pci_init_txentry,
.set_device_state = rt2400pci_set_device_state,
.rfkill_poll = rt2400pci_rfkill_poll,
.link_stats = rt2400pci_link_stats,
.reset_tuner = rt2400pci_reset_tuner,
.link_tuner = rt2400pci_link_tuner,
.write_tx_desc = rt2400pci_write_tx_desc,
.write_tx_data = rt2x00pci_write_tx_data,
.kick_tx_queue = rt2400pci_kick_tx_queue,
.fill_rxdone = rt2400pci_fill_rxdone,
.config_filter = rt2400pci_config_filter,
.config_intf = rt2400pci_config_intf,
.config_erp = rt2400pci_config_erp,
.config = rt2400pci_config,
};
static const struct data_queue_desc rt2400pci_queue_rx = {
.entry_num = RX_ENTRIES,
.data_size = DATA_FRAME_SIZE,
.desc_size = RXD_DESC_SIZE,
.priv_size = sizeof(struct queue_entry_priv_pci_rx),
};
static const struct data_queue_desc rt2400pci_queue_tx = {
.entry_num = TX_ENTRIES,
.data_size = DATA_FRAME_SIZE,
.desc_size = TXD_DESC_SIZE,
.priv_size = sizeof(struct queue_entry_priv_pci_tx),
};
static const struct data_queue_desc rt2400pci_queue_bcn = {
.entry_num = BEACON_ENTRIES,
.data_size = MGMT_FRAME_SIZE,
.desc_size = TXD_DESC_SIZE,
.priv_size = sizeof(struct queue_entry_priv_pci_tx),
};
static const struct data_queue_desc rt2400pci_queue_atim = {
.entry_num = ATIM_ENTRIES,
.data_size = DATA_FRAME_SIZE,
.desc_size = TXD_DESC_SIZE,
.priv_size = sizeof(struct queue_entry_priv_pci_tx),
};
static const struct rt2x00_ops rt2400pci_ops = {
.name = KBUILD_MODNAME,
.max_sta_intf = 1,
.max_ap_intf = 1,
.eeprom_size = EEPROM_SIZE,
.rf_size = RF_SIZE,
.rx = &rt2400pci_queue_rx,
.tx = &rt2400pci_queue_tx,
.bcn = &rt2400pci_queue_bcn,
.atim = &rt2400pci_queue_atim,
.lib = &rt2400pci_rt2x00_ops,
.hw = &rt2400pci_mac80211_ops,
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
.debugfs = &rt2400pci_rt2x00debug,
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
};
/*
* RT2400pci module information.
*/
static struct pci_device_id rt2400pci_device_table[] = {
{ PCI_DEVICE(0x1814, 0x0101), PCI_DEVICE_DATA(&rt2400pci_ops) },
{ 0, }
};
MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("Ralink RT2400 PCI & PCMCIA Wireless LAN driver.");
MODULE_SUPPORTED_DEVICE("Ralink RT2460 PCI & PCMCIA chipset based cards");
MODULE_DEVICE_TABLE(pci, rt2400pci_device_table);
MODULE_LICENSE("GPL");
static struct pci_driver rt2400pci_driver = {
.name = KBUILD_MODNAME,
.id_table = rt2400pci_device_table,
.probe = rt2x00pci_probe,
.remove = __devexit_p(rt2x00pci_remove),
.suspend = rt2x00pci_suspend,
.resume = rt2x00pci_resume,
};
static int __init rt2400pci_init(void)
{
return pci_register_driver(&rt2400pci_driver);
}
static void __exit rt2400pci_exit(void)
{
pci_unregister_driver(&rt2400pci_driver);
}
module_init(rt2400pci_init);
module_exit(rt2400pci_exit);
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