/* Copyright (C) 2004 - 2007 rt2x00 SourceForge Project 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 #include #include #include #include #include #include #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); } #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, int type) { struct interface *intf = &rt2x00dev->interface; 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, 2)); 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); if (is_interface_type(intf, IEEE80211_IF_TYPE_IBSS) || is_interface_type(intf, IEEE80211_IF_TYPE_AP)) rt2x00_set_field32(®, CSR14_TSF_SYNC, 2); else if (is_interface_type(intf, IEEE80211_IF_TYPE_STA)) rt2x00_set_field32(®, CSR14_TSF_SYNC, 1); else rt2x00_set_field32(®, CSR14_TSF_SYNC, 0); rt2x00pci_register_write(rt2x00dev, CSR14, reg); } static void rt2400pci_config_rate(struct rt2x00_dev *rt2x00dev, const int rate) { struct ieee80211_conf *conf = &rt2x00dev->hw->conf; u32 reg; u32 preamble; u16 value; if (DEVICE_GET_RATE_FIELD(rate, PREAMBLE)) preamble = SHORT_PREAMBLE; else preamble = PREAMBLE; reg = DEVICE_GET_RATE_FIELD(rate, RATEMASK) & DEV_BASIC_RATEMASK; rt2x00pci_register_write(rt2x00dev, ARCSR1, reg); rt2x00pci_register_read(rt2x00dev, TXCSR1, ®); value = ((conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) ? SHORT_DIFS : DIFS) + PLCP + preamble + get_duration(ACK_SIZE, 10); rt2x00_set_field32(®, TXCSR1_ACK_TIMEOUT, value); value = SIFS + PLCP + preamble + get_duration(ACK_SIZE, 10); rt2x00_set_field32(®, TXCSR1_ACK_CONSUME_TIME, value); rt2x00pci_register_write(rt2x00dev, TXCSR1, reg); preamble = DEVICE_GET_RATE_FIELD(rate, PREAMBLE) ? 0x08 : 0x00; rt2x00pci_register_read(rt2x00dev, ARCSR2, ®); rt2x00_set_field32(®, ARCSR2_SIGNAL, 0x00 | preamble); 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); 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); 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); 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 phymode) { struct ieee80211_hw_mode *mode; struct ieee80211_rate *rate; rt2x00dev->curr_hwmode = HWMODE_B; mode = &rt2x00dev->hwmodes[rt2x00dev->curr_hwmode]; rate = &mode->rates[mode->num_rates - 1]; rt2400pci_config_rate(rt2x00dev, rate->val2); } static void rt2400pci_config_channel(struct rt2x00_dev *rt2x00dev, const int index, const int channel) { struct rf_channel reg; /* * Fill rf_reg structure. */ memcpy(®, &rt2x00dev->spec.channels[index], sizeof(reg)); /* * Switch on tuning bits. */ rt2x00_set_field32(®.rf1, RF1_TUNER, 1); rt2x00_set_field32(®.rf3, RF3_TUNER, 1); rt2400pci_rf_write(rt2x00dev, 1, reg.rf1); rt2400pci_rf_write(rt2x00dev, 2, reg.rf2); rt2400pci_rf_write(rt2x00dev, 3, reg.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, reg.rf1); rt2400pci_rf_write(rt2x00dev, 2, 0x000c2a32); rt2400pci_rf_write(rt2x00dev, 3, reg.rf3); msleep(1); rt2400pci_rf_write(rt2x00dev, 1, reg.rf1); rt2400pci_rf_write(rt2x00dev, 2, reg.rf2); rt2400pci_rf_write(rt2x00dev, 3, reg.rf3); msleep(1); /* * Switch off tuning bits. */ rt2x00_set_field32(®.rf1, RF1_TUNER, 0); rt2x00_set_field32(®.rf3, RF3_TUNER, 0); rt2400pci_rf_write(rt2x00dev, 1, reg.rf1); rt2400pci_rf_write(rt2x00dev, 3, reg.rf3); /* * Clear false CRC during channel switch. */ rt2x00pci_register_read(rt2x00dev, CNT0, ®.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, int short_slot_time, int beacon_int) { u32 reg; rt2x00pci_register_read(rt2x00dev, CSR11, ®); rt2x00_set_field32(®, CSR11_SLOT_TIME, short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME); rt2x00pci_register_write(rt2x00dev, CSR11, reg); rt2x00pci_register_read(rt2x00dev, CSR18, ®); rt2x00_set_field32(®, CSR18_SIFS, SIFS); rt2x00_set_field32(®, CSR18_PIFS, short_slot_time ? SHORT_PIFS : PIFS); rt2x00pci_register_write(rt2x00dev, CSR18, reg); rt2x00pci_register_read(rt2x00dev, CSR19, ®); rt2x00_set_field32(®, CSR19_DIFS, short_slot_time ? SHORT_DIFS : DIFS); rt2x00_set_field32(®, CSR19_EIFS, 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, beacon_int * 16); rt2x00_set_field32(®, CSR12_CFP_MAX_DURATION, beacon_int * 16); rt2x00pci_register_write(rt2x00dev, CSR12, reg); } static void rt2400pci_config(struct rt2x00_dev *rt2x00dev, const unsigned int flags, struct ieee80211_conf *conf) { int short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME; if (flags & CONFIG_UPDATE_PHYMODE) rt2400pci_config_phymode(rt2x00dev, conf->phymode); if (flags & CONFIG_UPDATE_CHANNEL) rt2400pci_config_channel(rt2x00dev, conf->channel_val, conf->channel); if (flags & CONFIG_UPDATE_TXPOWER) rt2400pci_config_txpower(rt2x00dev, conf->power_level); if (flags & CONFIG_UPDATE_ANTENNA) rt2400pci_config_antenna(rt2x00dev, conf->antenna_sel_tx, conf->antenna_sel_rx); if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT)) rt2400pci_config_duration(rt2x00dev, short_slot_time, conf->beacon_int); } 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. */ if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO)) __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags); /* * 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, .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, #ifdef CONFIG_RT2400PCI_RFKILL .rfkill_poll = rt2400pci_rfkill_poll, #endif /* CONFIG_RT2400PCI_RFKILL */ .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 = 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);