diff options
Diffstat (limited to 'package/rt2x00/src/rt2400pci.c')
| -rw-r--r-- | package/rt2x00/src/rt2400pci.c | 1664 |
1 files changed, 0 insertions, 1664 deletions
diff --git a/package/rt2x00/src/rt2400pci.c b/package/rt2x00/src/rt2400pci.c deleted file mode 100644 index 31c1dd2..0000000 --- a/package/rt2x00/src/rt2400pci.c +++ /dev/null @@ -1,1664 +0,0 @@ -/* - 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: rt2400pci - Abstract: rt2400pci device specific routines. - Supported chipsets: RT2460. - */ - -/* - * Set enviroment defines for rt2x00.h - */ -#define DRV_NAME "rt2400pci" - -#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(const 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 rt2400pci_bbp_write(const 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(®, 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 rt2400pci_bbp_read(const 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(®, 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 = 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(const 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 rt2400pci_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 rt2400pci_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 rt2400pci_read_csr(const struct rt2x00_dev *rt2x00dev, - const unsigned int word, u32 *data) -{ - rt2x00pci_register_read(rt2x00dev, CSR_OFFSET(word), data); -} - -static void rt2400pci_write_csr(const 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, ®); - return rt2x00_get_field32(reg, GPIOCSR_BIT0); -} -#else -#define rt2400pci_rfkill_poll NULL -#endif /* CONFIG_RT2400PCI_RFKILL */ - -/* - * Configuration handlers. - */ -static void rt2400pci_config_mac_addr(struct rt2x00_dev *rt2x00dev, - __le32 *mac) -{ - rt2x00pci_register_multiwrite(rt2x00dev, CSR3, mac, - (2 * sizeof(__le32))); -} - -static void rt2400pci_config_bssid(struct rt2x00_dev *rt2x00dev, - __le32 *bssid) -{ - rt2x00pci_register_multiwrite(rt2x00dev, CSR5, bssid, - (2 * sizeof(__le32))); -} - -static void rt2400pci_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)); - 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, 1); - rt2x00_set_field32(®, CSR14_BEACON_GEN, 0); - rt2x00_set_field32(®, CSR14_TSF_SYNC, tsf_sync); - rt2x00pci_register_write(rt2x00dev, CSR14, reg); -} - -static void rt2400pci_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 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, - int antenna_tx, int antenna_rx) -{ - u8 r1; - u8 r4; - - rt2400pci_bbp_read(rt2x00dev, 4, &r4); - rt2400pci_bbp_read(rt2x00dev, 1, &r1); - - /* - * Configure the TX antenna. - */ - switch (antenna_tx) { - case ANTENNA_SW_DIVERSITY: - 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: - rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 2); - break; - } - - /* - * Configure the RX antenna. - */ - switch (antenna_rx) { - case ANTENNA_SW_DIVERSITY: - 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: - 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, ®); - 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 rt2400pci_config(struct rt2x00_dev *rt2x00dev, - const unsigned int flags, - struct rt2x00lib_conf *libconf) -{ - 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->conf->antenna_sel_tx, - libconf->conf->antenna_sel_rx); - if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT)) - rt2400pci_config_duration(rt2x00dev, libconf); -} - -static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev, - struct ieee80211_tx_queue_params *params) -{ - u32 reg; - - rt2x00pci_register_read(rt2x00dev, CSR11, ®); - rt2x00_set_field32(®, CSR11_CWMIN, params->cw_min); - rt2x00_set_field32(®, CSR11_CWMAX, params->cw_max); - rt2x00pci_register_write(rt2x00dev, CSR11, reg); -} - -/* - * LED functions. - */ -static void rt2400pci_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); - - if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) { - rt2x00_set_field32(®, LEDCSR_LINK, 1); - rt2x00_set_field32(®, LEDCSR_ACTIVITY, 0); - } else if (rt2x00dev->led_mode == LED_MODE_ASUS) { - rt2x00_set_field32(®, LEDCSR_LINK, 0); - rt2x00_set_field32(®, LEDCSR_ACTIVITY, 1); - } else { - rt2x00_set_field32(®, LEDCSR_LINK, 1); - rt2x00_set_field32(®, LEDCSR_ACTIVITY, 1); - } - - rt2x00pci_register_write(rt2x00dev, LEDCSR, reg); -} - -static void rt2400pci_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 rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev) -{ - u32 reg; - u8 bbp; - - /* - * Update FCS error count from register. - */ - rt2x00pci_register_read(rt2x00dev, CNT0, ®); - rt2x00dev->link.rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR); - - /* - * Update False CCA count from register. - */ - rt2400pci_bbp_read(rt2x00dev, 39, &bbp); - rt2x00dev->link.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, ®); - - if (rt2x00dev->link.false_cca > 512 && reg < 0x20) { - rt2400pci_bbp_write(rt2x00dev, 13, ++reg); - rt2x00dev->link.vgc_level = reg; - } else if (rt2x00dev->link.false_cca < 100 && reg > 0x08) { - rt2400pci_bbp_write(rt2x00dev, 13, --reg); - rt2x00dev->link.vgc_level = reg; - } -} - -/* - * Initialization functions. - */ -static void rt2400pci_init_rxring(struct rt2x00_dev *rt2x00dev) -{ - struct data_ring *ring = rt2x00dev->rx; - struct data_desc *rxd; - unsigned int i; - u32 word; - - memset(ring->data_addr, 0x00, rt2x00_get_ring_size(ring)); - - for (i = 0; i < ring->stats.limit; i++) { - rxd = ring->entry[i].priv; - - rt2x00_desc_read(rxd, 2, &word); - rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH, - ring->data_size); - rt2x00_desc_write(rxd, 2, word); - - rt2x00_desc_read(rxd, 1, &word); - rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, - ring->entry[i].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); - } - - rt2x00_ring_index_clear(rt2x00dev->rx); -} - -static void rt2400pci_init_txring(struct rt2x00_dev *rt2x00dev, const int queue) -{ - struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue); - struct data_desc *txd; - unsigned int i; - u32 word; - - memset(ring->data_addr, 0x00, rt2x00_get_ring_size(ring)); - - for (i = 0; i < ring->stats.limit; i++) { - txd = ring->entry[i].priv; - - rt2x00_desc_read(txd, 1, &word); - rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, - ring->entry[i].data_dma); - rt2x00_desc_write(txd, 1, word); - - rt2x00_desc_read(txd, 2, &word); - rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH, - ring->data_size); - rt2x00_desc_write(txd, 2, 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); - } - - rt2x00_ring_index_clear(ring); -} - -static int rt2400pci_init_rings(struct rt2x00_dev *rt2x00dev) -{ - u32 reg; - - /* - * Initialize rings. - */ - rt2400pci_init_rxring(rt2x00dev); - rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_DATA0); - rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_DATA1); - rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_AFTER_BEACON); - rt2400pci_init_txring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON); - - /* - * 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 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, ®); - 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); - - rt2x00pci_register_write(rt2x00dev, CNT3, 0x3f080000); - - rt2x00pci_register_read(rt2x00dev, ARCSR0, ®); - rt2x00_set_field32(®, ARCSR0_AR_BBP_DATA0, 133); - rt2x00_set_field32(®, ARCSR0_AR_BBP_ID0, 134); - rt2x00_set_field32(®, ARCSR0_AR_BBP_DATA1, 136); - rt2x00_set_field32(®, ARCSR0_AR_BBP_ID1, 135); - rt2x00pci_register_write(rt2x00dev, ARCSR0, reg); - - rt2x00pci_register_read(rt2x00dev, RXCSR3, ®); - rt2x00_set_field32(®, RXCSR3_BBP_ID0, 3); /* Tx power.*/ - rt2x00_set_field32(®, RXCSR3_BBP_ID0_VALID, 1); - rt2x00_set_field32(®, RXCSR3_BBP_ID1, 32); /* Signal */ - rt2x00_set_field32(®, RXCSR3_BBP_ID1_VALID, 1); - rt2x00_set_field32(®, RXCSR3_BBP_ID2, 36); /* Rssi */ - rt2x00_set_field32(®, 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, ®); - 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, 154); - rt2x00_set_field32(®, RALINKCSR_AR_BBP_DATA1, 0); - rt2x00_set_field32(®, RALINKCSR_AR_BBP_ID1, 154); - rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg); - - 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 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); - - 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); - rt2400pci_bbp_write(rt2x00dev, reg_id, value); - } - } - DEBUG(rt2x00dev, "...End initialization from EEPROM.\n"); - - 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, ®); - rt2x00_set_field32(®, 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, ®); - 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 rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev) -{ - /* - * Initialize all registers. - */ - if (rt2400pci_init_rings(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); - - /* - * Enable LED - */ - rt2400pci_enable_led(rt2x00dev); - - return 0; -} - -static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev) -{ - u32 reg; - - /* - * Disable LED - */ - rt2400pci_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. - */ - 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, ®); - 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 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_OFF: - rt2400pci_toggle_rx(rt2x00dev, state); - 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 data_desc *txd, - struct txdata_entry_desc *desc, - struct ieee80211_hdr *ieee80211hdr, - unsigned int length, - struct ieee80211_tx_control *control) -{ - u32 word; - u32 signal = 0; - u32 service = 0; - u32 length_high = 0; - u32 length_low = 0; - - /* - * The PLCP values should be treated as if they - * were BBP values. - */ - rt2x00_set_field32(&signal, BBPCSR_VALUE, desc->signal); - rt2x00_set_field32(&signal, BBPCSR_REGNUM, 5); - rt2x00_set_field32(&signal, BBPCSR_BUSY, 1); - - rt2x00_set_field32(&service, BBPCSR_VALUE, desc->service); - rt2x00_set_field32(&service, BBPCSR_REGNUM, 6); - rt2x00_set_field32(&service, BBPCSR_BUSY, 1); - - rt2x00_set_field32(&length_high, BBPCSR_VALUE, desc->length_high); - rt2x00_set_field32(&length_high, BBPCSR_REGNUM, 7); - rt2x00_set_field32(&length_high, BBPCSR_BUSY, 1); - - rt2x00_set_field32(&length_low, BBPCSR_VALUE, desc->length_low); - rt2x00_set_field32(&length_low, BBPCSR_REGNUM, 8); - rt2x00_set_field32(&length_low, BBPCSR_BUSY, 1); - - /* - * Start writing the descriptor words. - */ - rt2x00_desc_read(txd, 2, &word); - rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, length); - rt2x00_desc_write(txd, 2, word); - - rt2x00_desc_read(txd, 3, &word); - rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, signal); - rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, service); - rt2x00_desc_write(txd, 3, word); - - rt2x00_desc_read(txd, 4, &word); - rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, length_low); - rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, length_high); - 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, &desc->flags)); - rt2x00_set_field32(&word, TXD_W0_ACK, - !(control->flags & IEEE80211_TXCTL_NO_ACK)); - rt2x00_set_field32(&word, TXD_W0_TIMESTAMP, - test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags)); - rt2x00_set_field32(&word, TXD_W0_RTS, - test_bit(ENTRY_TXD_RTS_FRAME, &desc->flags)); - 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_desc_write(txd, 0, word); -} - -/* - * TX data initialization - */ -static void rt2400pci_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, ®); - if (queue == IEEE80211_TX_QUEUE_DATA0) - rt2x00_set_field32(®, TXCSR0_KICK_PRIO, 1); - else if (queue == IEEE80211_TX_QUEUE_DATA1) - rt2x00_set_field32(®, TXCSR0_KICK_TX, 1); - else if (queue == IEEE80211_TX_QUEUE_AFTER_BEACON) - rt2x00_set_field32(®, TXCSR0_KICK_ATIM, 1); - rt2x00pci_register_write(rt2x00dev, TXCSR0, reg); -} - -/* - * RX control handlers - */ -static void rt2400pci_fill_rxdone(struct data_entry *entry, - struct rxdata_entry_desc *desc) -{ - struct data_desc *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; - - /* - * Obtain the status about this packet. - */ - 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 = 0; - desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT); -} - -/* - * Interrupt functions. - */ -static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue) -{ - struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue); - struct data_entry *entry; - struct data_desc *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); - - rt2x00lib_txdone(entry, tx_status, retry); - - /* - * Make this entry available for reuse. - */ - entry->flags = 0; - rt2x00_set_field32(&word, TXD_W0_VALID, 0); - rt2x00_desc_write(txd, 0, word); - rt2x00_ring_index_done_inc(ring); - } - - /* - * If the data ring was full before the txdone handler - * we must make sure the packet queue in the mac80211 stack - * is reenabled when the txdone handler has finished. - */ - entry = ring->entry; - if (!rt2x00_ring_full(ring)) - ieee80211_wake_queue(rt2x00dev->hw, - entry->tx_status.control.queue); -} - -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, ®); - 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, IEEE80211_TX_QUEUE_AFTER_BEACON); - - /* - * 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, ®); - - 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, ®); - 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->hw->conf.antenna_sel_tx = - rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT); - rt2x00dev->hw->conf.antenna_sel_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_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->num_modes = 1; - spec->num_rates = 4; - 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 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 rt2400pci_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; - struct interface *intf = &rt2x00dev->interface; - 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. - * - Some filters are set based on interface type. - */ - *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; - if (is_interface_type(intf, IEEE80211_IF_TYPE_AP)) - *total_flags |= FIF_PROMISC_IN_BSS; - - /* - * Check if there is any work left for us. - */ - if (intf->filter == *total_flags) - return; - intf->filter = *total_flags; - - /* - * 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, ®); - 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); - rt2x00pci_register_write(rt2x00dev, RXCSR0, reg); -} - -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, ®); - 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 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->tx_params); - - 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, ®); - 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 rt2400pci_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 rt2400pci_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 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 = rt2400pci_configure_filter, - .get_stats = rt2x00mac_get_stats, - .set_retry_limit = rt2400pci_set_retry_limit, - .erp_ie_changed = rt2x00mac_erp_ie_changed, - .conf_tx = rt2400pci_conf_tx, - .get_tx_stats = rt2x00mac_get_tx_stats, - .get_tsf = rt2400pci_get_tsf, - .reset_tsf = rt2400pci_reset_tsf, - .beacon_update = rt2x00pci_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, - .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_mac_addr = rt2400pci_config_mac_addr, - .config_bssid = rt2400pci_config_bssid, - .config_type = rt2400pci_config_type, - .config_preamble = rt2400pci_config_preamble, - .config = rt2400pci_config, -}; - -static const struct rt2x00_ops rt2400pci_ops = { - .name = DRV_NAME, - .rxd_size = RXD_DESC_SIZE, - .txd_size = TXD_DESC_SIZE, - .eeprom_size = EEPROM_SIZE, - .rf_size = RF_SIZE, - .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 = DRV_NAME, - .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); |