| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Ivo van Doorn | 7204 | 83.34% | 64 | 51.20% |
| Helmut Schaa | 607 | 7.02% | 11 | 8.80% |
| Gabor Juhos | 254 | 2.94% | 3 | 2.40% |
| Gertjan van Wingerde | 226 | 2.61% | 21 | 16.80% |
| Arnd Bergmann | 185 | 2.14% | 5 | 4.00% |
| Johannes Berg | 69 | 0.80% | 5 | 4.00% |
| Stanislaw Gruszka | 26 | 0.30% | 1 | 0.80% |
| Eli Cooper | 21 | 0.24% | 1 | 0.80% |
| Eliad Peller | 14 | 0.16% | 2 | 1.60% |
| Joe Perches | 11 | 0.13% | 2 | 1.60% |
| Benoit Taine | 6 | 0.07% | 1 | 0.80% |
| Mattias Nissler | 6 | 0.07% | 1 | 0.80% |
| Andrew Price | 4 | 0.05% | 1 | 0.80% |
| Tejun Heo | 3 | 0.03% | 1 | 0.80% |
| Thomas Gleixner | 2 | 0.02% | 1 | 0.80% |
| Axel Lin | 2 | 0.02% | 1 | 0.80% |
| Mathias Kresin | 1 | 0.01% | 1 | 0.80% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 0.80% |
| Stefan Steuerwald | 1 | 0.01% | 1 | 0.80% |
| Stanislaw W. Gruszka | 1 | 0.01% | 1 | 0.80% |
| Total | 8644 | 125 |
// SPDX-License-Identifier: GPL-2.0-or-later /* Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> <http://rt2x00.serialmonkey.com> */ /* Module: rt2400pci Abstract: rt2400pci device specific routines. Supported chipsets: RT2460. */ #include <linux/delay.h> #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/eeprom_93cx6.h> #include <linux/slab.h> #include "rt2x00.h" #include "rt2x00mmio.h" #include "rt2x00pci.h" #include "rt2400pci.h" /* * Register access. * All access to the CSR registers will go through the methods * rt2x00mmio_register_read and rt2x00mmio_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 attempt. When the busy bit is still set at that time, * the access attempt is considered to have failed, * and we will print an error. */ #define WAIT_FOR_BBP(__dev, __reg) \ rt2x00mmio_regbusy_read((__dev), BBPCSR, BBPCSR_BUSY, (__reg)) #define WAIT_FOR_RF(__dev, __reg) \ rt2x00mmio_regbusy_read((__dev), RFCSR, RFCSR_BUSY, (__reg)) static void rt2400pci_bbp_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u8 value) { u32 reg; mutex_lock(&rt2x00dev->csr_mutex); /* * Wait until the BBP becomes available, afterwards we * can safely write the new data into the register. */ if (WAIT_FOR_BBP(rt2x00dev, ®)) { reg = 0; rt2x00_set_field32(®, BBPCSR_VALUE, value); rt2x00_set_field32(®, BBPCSR_REGNUM, word); rt2x00_set_field32(®, BBPCSR_BUSY, 1); rt2x00_set_field32(®, BBPCSR_WRITE_CONTROL, 1); rt2x00mmio_register_write(rt2x00dev, BBPCSR, reg); } mutex_unlock(&rt2x00dev->csr_mutex); } static u8 rt2400pci_bbp_read(struct rt2x00_dev *rt2x00dev, const unsigned int word) { u32 reg; u8 value; mutex_lock(&rt2x00dev->csr_mutex); /* * Wait until the BBP becomes available, afterwards we * can safely write the read request into the register. * After the data has been written, we wait until hardware * returns the correct value, if at any time the register * doesn't become available in time, reg will be 0xffffffff * which means we return 0xff to the caller. */ if (WAIT_FOR_BBP(rt2x00dev, ®)) { reg = 0; rt2x00_set_field32(®, BBPCSR_REGNUM, word); rt2x00_set_field32(®, BBPCSR_BUSY, 1); rt2x00_set_field32(®, BBPCSR_WRITE_CONTROL, 0); rt2x00mmio_register_write(rt2x00dev, BBPCSR, reg); WAIT_FOR_BBP(rt2x00dev, ®); } value = rt2x00_get_field32(reg, BBPCSR_VALUE); mutex_unlock(&rt2x00dev->csr_mutex); return value; } static void rt2400pci_rf_write(struct rt2x00_dev *rt2x00dev, const unsigned int word, const u32 value) { u32 reg; mutex_lock(&rt2x00dev->csr_mutex); /* * Wait until the RF becomes available, afterwards we * can safely write the new data into the register. */ if (WAIT_FOR_RF(rt2x00dev, ®)) { reg = 0; rt2x00_set_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); rt2x00mmio_register_write(rt2x00dev, RFCSR, reg); rt2x00_rf_write(rt2x00dev, word, value); } mutex_unlock(&rt2x00dev->csr_mutex); } static void rt2400pci_eepromregister_read(struct eeprom_93cx6 *eeprom) { struct rt2x00_dev *rt2x00dev = eeprom->data; u32 reg; reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, CSR21, reg); } #ifdef CONFIG_RT2X00_LIB_DEBUGFS static const struct rt2x00debug rt2400pci_rt2x00debug = { .owner = THIS_MODULE, .csr = { .read = rt2x00mmio_register_read, .write = rt2x00mmio_register_write, .flags = RT2X00DEBUGFS_OFFSET, .word_base = CSR_REG_BASE, .word_size = sizeof(u32), .word_count = CSR_REG_SIZE / sizeof(u32), }, .eeprom = { .read = rt2x00_eeprom_read, .write = rt2x00_eeprom_write, .word_base = EEPROM_BASE, .word_size = sizeof(u16), .word_count = EEPROM_SIZE / sizeof(u16), }, .bbp = { .read = rt2400pci_bbp_read, .write = rt2400pci_bbp_write, .word_base = BBP_BASE, .word_size = sizeof(u8), .word_count = BBP_SIZE / sizeof(u8), }, .rf = { .read = rt2x00_rf_read, .write = rt2400pci_rf_write, .word_base = RF_BASE, .word_size = sizeof(u32), .word_count = RF_SIZE / sizeof(u32), }, }; #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ static int rt2400pci_rfkill_poll(struct rt2x00_dev *rt2x00dev) { u32 reg; reg = rt2x00mmio_register_read(rt2x00dev, GPIOCSR); return rt2x00_get_field32(reg, GPIOCSR_VAL0); } #ifdef CONFIG_RT2X00_LIB_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; reg = rt2x00mmio_register_read(led->rt2x00dev, LEDCSR); if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC) rt2x00_set_field32(®, LEDCSR_LINK, enabled); else if (led->type == LED_TYPE_ACTIVITY) rt2x00_set_field32(®, LEDCSR_ACTIVITY, enabled); rt2x00mmio_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; reg = rt2x00mmio_register_read(led->rt2x00dev, LEDCSR); rt2x00_set_field32(®, LEDCSR_ON_PERIOD, *delay_on); rt2x00_set_field32(®, LEDCSR_OFF_PERIOD, *delay_off); rt2x00mmio_register_write(led->rt2x00dev, LEDCSR, reg); return 0; } static void rt2400pci_init_led(struct rt2x00_dev *rt2x00dev, struct rt2x00_led *led, enum led_type type) { led->rt2x00dev = rt2x00dev; led->type = type; led->led_dev.brightness_set = rt2400pci_brightness_set; led->led_dev.blink_set = rt2400pci_blink_set; led->flags = LED_INITIALIZED; } #endif /* CONFIG_RT2X00_LIB_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. */ reg = rt2x00mmio_register_read(rt2x00dev, RXCSR0); rt2x00_set_field32(®, RXCSR0_DROP_CRC, !(filter_flags & FIF_FCSFAIL)); rt2x00_set_field32(®, RXCSR0_DROP_PHYSICAL, !(filter_flags & FIF_PLCPFAIL)); rt2x00_set_field32(®, RXCSR0_DROP_CONTROL, !(filter_flags & FIF_CONTROL)); rt2x00_set_field32(®, RXCSR0_DROP_NOT_TO_ME, !test_bit(CONFIG_MONITORING, &rt2x00dev->flags)); rt2x00_set_field32(®, RXCSR0_DROP_TODS, !test_bit(CONFIG_MONITORING, &rt2x00dev->flags) && !rt2x00dev->intf_ap_count); rt2x00_set_field32(®, RXCSR0_DROP_VERSION_ERROR, 1); rt2x00mmio_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); reg = rt2x00mmio_register_read(rt2x00dev, BCNCSR1); rt2x00_set_field32(®, BCNCSR1_PRELOAD, bcn_preload); rt2x00mmio_register_write(rt2x00dev, BCNCSR1, reg); /* * Enable synchronisation. */ reg = rt2x00mmio_register_read(rt2x00dev, CSR14); rt2x00_set_field32(®, CSR14_TSF_SYNC, conf->sync); rt2x00mmio_register_write(rt2x00dev, CSR14, reg); } if (flags & CONFIG_UPDATE_MAC) rt2x00mmio_register_multiwrite(rt2x00dev, CSR3, conf->mac, sizeof(conf->mac)); if (flags & CONFIG_UPDATE_BSSID) rt2x00mmio_register_multiwrite(rt2x00dev, CSR5, conf->bssid, sizeof(conf->bssid)); } static void rt2400pci_config_erp(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_erp *erp, u32 changed) { int preamble_mask; u32 reg; /* * When short preamble is enabled, we should set bit 0x08 */ if (changed & BSS_CHANGED_ERP_PREAMBLE) { preamble_mask = erp->short_preamble << 3; reg = rt2x00mmio_register_read(rt2x00dev, TXCSR1); rt2x00_set_field32(®, TXCSR1_ACK_TIMEOUT, 0x1ff); rt2x00_set_field32(®, TXCSR1_ACK_CONSUME_TIME, 0x13a); rt2x00_set_field32(®, TXCSR1_TSF_OFFSET, IEEE80211_HEADER); rt2x00_set_field32(®, TXCSR1_AUTORESPONDER, 1); rt2x00mmio_register_write(rt2x00dev, TXCSR1, reg); reg = rt2x00mmio_register_read(rt2x00dev, ARCSR2); rt2x00_set_field32(®, ARCSR2_SIGNAL, 0x00); rt2x00_set_field32(®, ARCSR2_SERVICE, 0x04); rt2x00_set_field32(®, ARCSR2_LENGTH, GET_DURATION(ACK_SIZE, 10)); rt2x00mmio_register_write(rt2x00dev, ARCSR2, reg); reg = rt2x00mmio_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)); rt2x00mmio_register_write(rt2x00dev, ARCSR3, reg); reg = rt2x00mmio_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)); rt2x00mmio_register_write(rt2x00dev, ARCSR4, reg); reg = rt2x00mmio_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)); rt2x00mmio_register_write(rt2x00dev, ARCSR5, reg); } if (changed & BSS_CHANGED_BASIC_RATES) rt2x00mmio_register_write(rt2x00dev, ARCSR1, erp->basic_rates); if (changed & BSS_CHANGED_ERP_SLOT) { reg = rt2x00mmio_register_read(rt2x00dev, CSR11); rt2x00_set_field32(®, CSR11_SLOT_TIME, erp->slot_time); rt2x00mmio_register_write(rt2x00dev, CSR11, reg); reg = rt2x00mmio_register_read(rt2x00dev, CSR18); rt2x00_set_field32(®, CSR18_SIFS, erp->sifs); rt2x00_set_field32(®, CSR18_PIFS, erp->pifs); rt2x00mmio_register_write(rt2x00dev, CSR18, reg); reg = rt2x00mmio_register_read(rt2x00dev, CSR19); rt2x00_set_field32(®, CSR19_DIFS, erp->difs); rt2x00_set_field32(®, CSR19_EIFS, erp->eifs); rt2x00mmio_register_write(rt2x00dev, CSR19, reg); } if (changed & BSS_CHANGED_BEACON_INT) { reg = rt2x00mmio_register_read(rt2x00dev, CSR12); rt2x00_set_field32(®, CSR12_BEACON_INTERVAL, erp->beacon_int * 16); rt2x00_set_field32(®, CSR12_CFP_MAX_DURATION, erp->beacon_int * 16); rt2x00mmio_register_write(rt2x00dev, CSR12, reg); } } static void rt2400pci_config_ant(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); r4 = rt2400pci_bbp_read(rt2x00dev, 4); r1 = rt2400pci_bbp_read(rt2x00dev, 1); /* * 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_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, 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. */ rf->rf1 = rt2x00mmio_register_read(rt2x00dev, CNT0); } static void rt2400pci_config_txpower(struct rt2x00_dev *rt2x00dev, int txpower) { rt2400pci_bbp_write(rt2x00dev, 3, TXPOWER_TO_DEV(txpower)); } static void rt2400pci_config_retry_limit(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf) { u32 reg; reg = rt2x00mmio_register_read(rt2x00dev, CSR11); rt2x00_set_field32(®, CSR11_LONG_RETRY, libconf->conf->long_frame_max_tx_count); rt2x00_set_field32(®, CSR11_SHORT_RETRY, libconf->conf->short_frame_max_tx_count); rt2x00mmio_register_write(rt2x00dev, CSR11, reg); } static void rt2400pci_config_ps(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf) { enum dev_state state = (libconf->conf->flags & IEEE80211_CONF_PS) ? STATE_SLEEP : STATE_AWAKE; u32 reg; if (state == STATE_SLEEP) { reg = rt2x00mmio_register_read(rt2x00dev, CSR20); rt2x00_set_field32(®, CSR20_DELAY_AFTER_TBCN, (rt2x00dev->beacon_int - 20) * 16); rt2x00_set_field32(®, CSR20_TBCN_BEFORE_WAKEUP, libconf->conf->listen_interval - 1); /* We must first disable autowake before it can be enabled */ rt2x00_set_field32(®, CSR20_AUTOWAKE, 0); rt2x00mmio_register_write(rt2x00dev, CSR20, reg); rt2x00_set_field32(®, CSR20_AUTOWAKE, 1); rt2x00mmio_register_write(rt2x00dev, CSR20, reg); } else { reg = rt2x00mmio_register_read(rt2x00dev, CSR20); rt2x00_set_field32(®, CSR20_AUTOWAKE, 0); rt2x00mmio_register_write(rt2x00dev, CSR20, reg); } rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); } static void rt2400pci_config(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf, const unsigned int flags) { if (flags & IEEE80211_CONF_CHANGE_CHANNEL) rt2400pci_config_channel(rt2x00dev, &libconf->rf); if (flags & IEEE80211_CONF_CHANGE_POWER) rt2400pci_config_txpower(rt2x00dev, libconf->conf->power_level); if (flags & IEEE80211_CONF_CHANGE_RETRY_LIMITS) rt2400pci_config_retry_limit(rt2x00dev, libconf); if (flags & IEEE80211_CONF_CHANGE_PS) rt2400pci_config_ps(rt2x00dev, libconf); } static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev, const int cw_min, const int cw_max) { u32 reg; reg = rt2x00mmio_register_read(rt2x00dev, CSR11); rt2x00_set_field32(®, CSR11_CWMIN, cw_min); rt2x00_set_field32(®, CSR11_CWMAX, cw_max); rt2x00mmio_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. */ reg = rt2x00mmio_register_read(rt2x00dev, CNT0); qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR); /* * Update False CCA count from register. */ bbp = rt2400pci_bbp_read(rt2x00dev, 39); qual->false_cca = bbp; } static inline void rt2400pci_set_vgc(struct rt2x00_dev *rt2x00dev, struct link_qual *qual, u8 vgc_level) { if (qual->vgc_level_reg != vgc_level) { rt2400pci_bbp_write(rt2x00dev, 13, vgc_level); qual->vgc_level = vgc_level; qual->vgc_level_reg = vgc_level; } } static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual) { rt2400pci_set_vgc(rt2x00dev, qual, 0x08); } static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual, const u32 count) { /* * The link tuner should not run longer then 60 seconds, * and should run once every 2 seconds. */ if (count > 60 || !(count & 1)) return; /* * Base r13 link tuning on the false cca count. */ if ((qual->false_cca > 512) && (qual->vgc_level < 0x20)) rt2400pci_set_vgc(rt2x00dev, qual, ++qual->vgc_level); else if ((qual->false_cca < 100) && (qual->vgc_level > 0x08)) rt2400pci_set_vgc(rt2x00dev, qual, --qual->vgc_level); } /* * Queue handlers. */ static void rt2400pci_start_queue(struct data_queue *queue) { struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; u32 reg; switch (queue->qid) { case QID_RX: reg = rt2x00mmio_register_read(rt2x00dev, RXCSR0); rt2x00_set_field32(®, RXCSR0_DISABLE_RX, 0); rt2x00mmio_register_write(rt2x00dev, RXCSR0, reg); break; case QID_BEACON: reg = rt2x00mmio_register_read(rt2x00dev, CSR14); rt2x00_set_field32(®, CSR14_TSF_COUNT, 1); rt2x00_set_field32(®, CSR14_TBCN, 1); rt2x00_set_field32(®, CSR14_BEACON_GEN, 1); rt2x00mmio_register_write(rt2x00dev, CSR14, reg); break; default: break; } } static void rt2400pci_kick_queue(struct data_queue *queue) { struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; u32 reg; switch (queue->qid) { case QID_AC_VO: reg = rt2x00mmio_register_read(rt2x00dev, TXCSR0); rt2x00_set_field32(®, TXCSR0_KICK_PRIO, 1); rt2x00mmio_register_write(rt2x00dev, TXCSR0, reg); break; case QID_AC_VI: reg = rt2x00mmio_register_read(rt2x00dev, TXCSR0); rt2x00_set_field32(®, TXCSR0_KICK_TX, 1); rt2x00mmio_register_write(rt2x00dev, TXCSR0, reg); break; case QID_ATIM: reg = rt2x00mmio_register_read(rt2x00dev, TXCSR0); rt2x00_set_field32(®, TXCSR0_KICK_ATIM, 1); rt2x00mmio_register_write(rt2x00dev, TXCSR0, reg); break; default: break; } } static void rt2400pci_stop_queue(struct data_queue *queue) { struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; u32 reg; switch (queue->qid) { case QID_AC_VO: case QID_AC_VI: case QID_ATIM: reg = rt2x00mmio_register_read(rt2x00dev, TXCSR0); rt2x00_set_field32(®, TXCSR0_ABORT, 1); rt2x00mmio_register_write(rt2x00dev, TXCSR0, reg); break; case QID_RX: reg = rt2x00mmio_register_read(rt2x00dev, RXCSR0); rt2x00_set_field32(®, RXCSR0_DISABLE_RX, 1); rt2x00mmio_register_write(rt2x00dev, RXCSR0, reg); break; case QID_BEACON: reg = rt2x00mmio_register_read(rt2x00dev, CSR14); rt2x00_set_field32(®, CSR14_TSF_COUNT, 0); rt2x00_set_field32(®, CSR14_TBCN, 0); rt2x00_set_field32(®, CSR14_BEACON_GEN, 0); rt2x00mmio_register_write(rt2x00dev, CSR14, reg); /* * Wait for possibly running tbtt tasklets. */ tasklet_kill(&rt2x00dev->tbtt_tasklet); break; default: break; } } /* * Initialization functions. */ static bool rt2400pci_get_entry_state(struct queue_entry *entry) { struct queue_entry_priv_mmio *entry_priv = entry->priv_data; u32 word; if (entry->queue->qid == QID_RX) { word = rt2x00_desc_read(entry_priv->desc, 0); return rt2x00_get_field32(word, RXD_W0_OWNER_NIC); } else { word = rt2x00_desc_read(entry_priv->desc, 0); return (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) || rt2x00_get_field32(word, TXD_W0_VALID)); } } static void rt2400pci_clear_entry(struct queue_entry *entry) { struct queue_entry_priv_mmio *entry_priv = entry->priv_data; struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); u32 word; if (entry->queue->qid == QID_RX) { word = rt2x00_desc_read(entry_priv->desc, 2); rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH, entry->skb->len); rt2x00_desc_write(entry_priv->desc, 2, word); word = rt2x00_desc_read(entry_priv->desc, 1); rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, skbdesc->skb_dma); rt2x00_desc_write(entry_priv->desc, 1, word); word = rt2x00_desc_read(entry_priv->desc, 0); rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1); rt2x00_desc_write(entry_priv->desc, 0, word); } else { word = rt2x00_desc_read(entry_priv->desc, 0); rt2x00_set_field32(&word, TXD_W0_VALID, 0); rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0); rt2x00_desc_write(entry_priv->desc, 0, word); } } static int rt2400pci_init_queues(struct rt2x00_dev *rt2x00dev) { struct queue_entry_priv_mmio *entry_priv; u32 reg; /* * Initialize registers. */ reg = rt2x00mmio_register_read(rt2x00dev, TXCSR2); rt2x00_set_field32(®, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size); rt2x00_set_field32(®, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit); rt2x00_set_field32(®, TXCSR2_NUM_ATIM, rt2x00dev->atim->limit); rt2x00_set_field32(®, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit); rt2x00mmio_register_write(rt2x00dev, TXCSR2, reg); entry_priv = rt2x00dev->tx[1].entries[0].priv_data; reg = rt2x00mmio_register_read(rt2x00dev, TXCSR3); rt2x00_set_field32(®, TXCSR3_TX_RING_REGISTER, entry_priv->desc_dma); rt2x00mmio_register_write(rt2x00dev, TXCSR3, reg); entry_priv = rt2x00dev->tx[0].entries[0].priv_data; reg = rt2x00mmio_register_read(rt2x00dev, TXCSR5); rt2x00_set_field32(®, TXCSR5_PRIO_RING_REGISTER, entry_priv->desc_dma); rt2x00mmio_register_write(rt2x00dev, TXCSR5, reg); entry_priv = rt2x00dev->atim->entries[0].priv_data; reg = rt2x00mmio_register_read(rt2x00dev, TXCSR4); rt2x00_set_field32(®, TXCSR4_ATIM_RING_REGISTER, entry_priv->desc_dma); rt2x00mmio_register_write(rt2x00dev, TXCSR4, reg); entry_priv = rt2x00dev->bcn->entries[0].priv_data; reg = rt2x00mmio_register_read(rt2x00dev, TXCSR6); rt2x00_set_field32(®, TXCSR6_BEACON_RING_REGISTER, entry_priv->desc_dma); rt2x00mmio_register_write(rt2x00dev, TXCSR6, reg); reg = rt2x00mmio_register_read(rt2x00dev, RXCSR1); rt2x00_set_field32(®, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size); rt2x00_set_field32(®, RXCSR1_NUM_RXD, rt2x00dev->rx->limit); rt2x00mmio_register_write(rt2x00dev, RXCSR1, reg); entry_priv = rt2x00dev->rx->entries[0].priv_data; reg = rt2x00mmio_register_read(rt2x00dev, RXCSR2); rt2x00_set_field32(®, RXCSR2_RX_RING_REGISTER, entry_priv->desc_dma); rt2x00mmio_register_write(rt2x00dev, RXCSR2, reg); return 0; } static int rt2400pci_init_registers(struct rt2x00_dev *rt2x00dev) { u32 reg; rt2x00mmio_register_write(rt2x00dev, PSCSR0, 0x00020002); rt2x00mmio_register_write(rt2x00dev, PSCSR1, 0x00000002); rt2x00mmio_register_write(rt2x00dev, PSCSR2, 0x00023f20); rt2x00mmio_register_write(rt2x00dev, PSCSR3, 0x00000002); reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, TIMECSR, reg); reg = rt2x00mmio_register_read(rt2x00dev, CSR9); rt2x00_set_field32(®, CSR9_MAX_FRAME_UNIT, (rt2x00dev->rx->data_size / 128)); rt2x00mmio_register_write(rt2x00dev, CSR9, reg); reg = rt2x00mmio_register_read(rt2x00dev, CSR14); rt2x00_set_field32(®, CSR14_TSF_COUNT, 0); rt2x00_set_field32(®, CSR14_TSF_SYNC, 0); rt2x00_set_field32(®, CSR14_TBCN, 0); rt2x00_set_field32(®, CSR14_TCFP, 0); rt2x00_set_field32(®, CSR14_TATIMW, 0); rt2x00_set_field32(®, CSR14_BEACON_GEN, 0); rt2x00_set_field32(®, CSR14_CFP_COUNT_PRELOAD, 0); rt2x00_set_field32(®, CSR14_TBCM_PRELOAD, 0); rt2x00mmio_register_write(rt2x00dev, CSR14, reg); rt2x00mmio_register_write(rt2x00dev, CNT3, 0x3f080000); reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, ARCSR0, reg); reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, RXCSR3, reg); rt2x00mmio_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100); if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE)) return -EBUSY; rt2x00mmio_register_write(rt2x00dev, MACCSR0, 0x00217223); rt2x00mmio_register_write(rt2x00dev, MACCSR1, 0x00235518); reg = rt2x00mmio_register_read(rt2x00dev, MACCSR2); rt2x00_set_field32(®, MACCSR2_DELAY, 64); rt2x00mmio_register_write(rt2x00dev, MACCSR2, reg); reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, RALINKCSR, reg); reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, CSR1, reg); reg = rt2x00mmio_register_read(rt2x00dev, CSR1); rt2x00_set_field32(®, CSR1_SOFT_RESET, 0); rt2x00_set_field32(®, CSR1_HOST_READY, 1); rt2x00mmio_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. */ reg = rt2x00mmio_register_read(rt2x00dev, CNT0); reg = rt2x00mmio_register_read(rt2x00dev, CNT4); return 0; } static int rt2400pci_wait_bbp_ready(struct rt2x00_dev *rt2x00dev) { unsigned int i; u8 value; for (i = 0; i < REGISTER_BUSY_COUNT; i++) { value = rt2400pci_bbp_read(rt2x00dev, 0); if ((value != 0xff) && (value != 0x00)) return 0; udelay(REGISTER_BUSY_DELAY); } rt2x00_err(rt2x00dev, "BBP register access failed, aborting\n"); return -EACCES; } static int rt2400pci_init_bbp(struct rt2x00_dev *rt2x00dev) { unsigned int i; u16 eeprom; u8 reg_id; u8 value; if (unlikely(rt2400pci_wait_bbp_ready(rt2x00dev))) return -EACCES; 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++) { eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i); 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_irq(struct rt2x00_dev *rt2x00dev, enum dev_state state) { int mask = (state == STATE_RADIO_IRQ_OFF); u32 reg; unsigned long flags; /* * When interrupts are being enabled, the interrupt registers * should clear the register to assure a clean state. */ if (state == STATE_RADIO_IRQ_ON) { reg = rt2x00mmio_register_read(rt2x00dev, CSR7); rt2x00mmio_register_write(rt2x00dev, CSR7, reg); } /* * Only toggle the interrupts bits we are going to use. * Non-checked interrupt bits are disabled by default. */ spin_lock_irqsave(&rt2x00dev->irqmask_lock, flags); reg = rt2x00mmio_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); rt2x00mmio_register_write(rt2x00dev, CSR8, reg); spin_unlock_irqrestore(&rt2x00dev->irqmask_lock, flags); if (state == STATE_RADIO_IRQ_OFF) { /* * Ensure that all tasklets are finished before * disabling the interrupts. */ tasklet_kill(&rt2x00dev->txstatus_tasklet); tasklet_kill(&rt2x00dev->rxdone_tasklet); tasklet_kill(&rt2x00dev->tbtt_tasklet); } } static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev) { /* * Initialize all registers. */ if (unlikely(rt2400pci_init_queues(rt2x00dev) || rt2400pci_init_registers(rt2x00dev) || rt2400pci_init_bbp(rt2x00dev))) return -EIO; return 0; } static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev) { /* * Disable power */ rt2x00mmio_register_write(rt2x00dev, PWRCSR0, 0); } static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state) { u32 reg, reg2; unsigned int i; char put_to_sleep; char bbp_state; char rf_state; put_to_sleep = (state != STATE_AWAKE); reg = rt2x00mmio_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); rt2x00mmio_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++) { reg2 = rt2x00mmio_register_read(rt2x00dev, PWRCSR1); bbp_state = rt2x00_get_field32(reg2, PWRCSR1_BBP_CURR_STATE); rf_state = rt2x00_get_field32(reg2, PWRCSR1_RF_CURR_STATE); if (bbp_state == state && rf_state == state) return 0; rt2x00mmio_register_write(rt2x00dev, PWRCSR1, reg); msleep(10); } 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_IRQ_ON: case STATE_RADIO_IRQ_OFF: rt2400pci_toggle_irq(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; } if (unlikely(retval)) rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n", state, retval); return retval; } /* * TX descriptor initialization */ static void rt2400pci_write_tx_desc(struct queue_entry *entry, struct txentry_desc *txdesc) { struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); struct queue_entry_priv_mmio *entry_priv = entry->priv_data; __le32 *txd = entry_priv->desc; u32 word; /* * Start writing the descriptor words. */ word = rt2x00_desc_read(txd, 1); rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, skbdesc->skb_dma); rt2x00_desc_write(txd, 1, word); word = rt2x00_desc_read(txd, 2); rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH, txdesc->length); rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, txdesc->length); rt2x00_desc_write(txd, 2, word); word = rt2x00_desc_read(txd, 3); rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->u.plcp.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->u.plcp.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); word = rt2x00_desc_read(txd, 4); rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, txdesc->u.plcp.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->u.plcp.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); /* * Writing TXD word 0 must the last to prevent a race condition with * the device, whereby the device may take hold of the TXD before we * finished updating it. */ word = rt2x00_desc_read(txd, 0); 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->u.plcp.ifs); rt2x00_set_field32(&word, TXD_W0_RETRY_MODE, test_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags)); rt2x00_desc_write(txd, 0, word); /* * Register descriptor details in skb frame descriptor. */ skbdesc->desc = txd; skbdesc->desc_len = TXD_DESC_SIZE; } /* * TX data initialization */ static void rt2400pci_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; u32 reg; /* * Disable beaconing while we are reloading the beacon data, * otherwise we might be sending out invalid data. */ reg = rt2x00mmio_register_read(rt2x00dev, CSR14); rt2x00_set_field32(®, CSR14_BEACON_GEN, 0); rt2x00mmio_register_write(rt2x00dev, CSR14, reg); if (rt2x00queue_map_txskb(entry)) { rt2x00_err(rt2x00dev, "Fail to map beacon, aborting\n"); goto out; } /* * Enable beaconing again. */ rt2x00_set_field32(®, CSR14_BEACON_GEN, 1); /* * Write the TX descriptor for the beacon. */ rt2400pci_write_tx_desc(entry, txdesc); /* * Dump beacon to userspace through debugfs. */ rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry); out: /* * Enable beaconing again. */ rt2x00_set_field32(®, CSR14_BEACON_GEN, 1); rt2x00mmio_register_write(rt2x00dev, CSR14, reg); } /* * RX control handlers */ static void rt2400pci_fill_rxdone(struct queue_entry *entry, struct rxdone_entry_desc *rxdesc) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct queue_entry_priv_mmio *entry_priv = entry->priv_data; u32 word0; u32 word2; u32 word3; u32 word4; u64 tsf; u32 rx_low; u32 rx_high; word0 = rt2x00_desc_read(entry_priv->desc, 0); word2 = rt2x00_desc_read(entry_priv->desc, 2); word3 = rt2x00_desc_read(entry_priv->desc, 3); word4 = rt2x00_desc_read(entry_priv->desc, 4); 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; /* * We only get the lower 32bits from the timestamp, * to get the full 64bits we must complement it with * the timestamp from get_tsf(). * Note that when a wraparound of the lower 32bits * has occurred between the frame arrival and the get_tsf() * call, we must decrease the higher 32bits with 1 to get * to correct value. */ tsf = rt2x00dev->ops->hw->get_tsf(rt2x00dev->hw, NULL); rx_low = rt2x00_get_field32(word4, RXD_W4_RX_END_TIME); rx_high = upper_32_bits(tsf); if ((u32)tsf <= rx_low) rx_high--; /* * Obtain the status about this packet. * The signal is the PLCP value, and needs to be stripped * of the preamble bit (0x08). */ rxdesc->timestamp = ((u64)rx_high << 32) | rx_low; rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL) & ~0x08; rxdesc->rssi = rt2x00_get_field32(word3, 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 data_queue_qid queue_idx) { struct data_queue *queue = rt2x00queue_get_tx_queue(rt2x00dev, queue_idx); struct queue_entry_priv_mmio *entry_priv; struct queue_entry *entry; struct txdone_entry_desc txdesc; u32 word; while (!rt2x00queue_empty(queue)) { entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE); entry_priv = entry->priv_data; word = rt2x00_desc_read(entry_priv->desc, 0); if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) || !rt2x00_get_field32(word, TXD_W0_VALID)) break; /* * Obtain the status about this packet. */ txdesc.flags = 0; switch (rt2x00_get_field32(word, TXD_W0_RESULT)) { case 0: /* Success */ case 1: /* Success with retry */ __set_bit(TXDONE_SUCCESS, &txdesc.flags); break; case 2: /* Failure, excessive retries */ __set_bit(TXDONE_EXCESSIVE_RETRY, &txdesc.flags); /* Fall through - this is a failed frame! */ default: /* Failure */ __set_bit(TXDONE_FAILURE, &txdesc.flags); } txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT); rt2x00lib_txdone(entry, &txdesc); } } static inline void rt2400pci_enable_interrupt(struct rt2x00_dev *rt2x00dev, struct rt2x00_field32 irq_field) { u32 reg; /* * Enable a single interrupt. The interrupt mask register * access needs locking. */ spin_lock_irq(&rt2x00dev->irqmask_lock); reg = rt2x00mmio_register_read(rt2x00dev, CSR8); rt2x00_set_field32(®, irq_field, 0); rt2x00mmio_register_write(rt2x00dev, CSR8, reg); spin_unlock_irq(&rt2x00dev->irqmask_lock); } static void rt2400pci_txstatus_tasklet(unsigned long data) { struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data; u32 reg; /* * Handle all tx queues. */ rt2400pci_txdone(rt2x00dev, QID_ATIM); rt2400pci_txdone(rt2x00dev, QID_AC_VO); rt2400pci_txdone(rt2x00dev, QID_AC_VI); /* * Enable all TXDONE interrupts again. */ if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) { spin_lock_irq(&rt2x00dev->irqmask_lock); reg = rt2x00mmio_register_read(rt2x00dev, CSR8); rt2x00_set_field32(®, CSR8_TXDONE_TXRING, 0); rt2x00_set_field32(®, CSR8_TXDONE_ATIMRING, 0); rt2x00_set_field32(®, CSR8_TXDONE_PRIORING, 0); rt2x00mmio_register_write(rt2x00dev, CSR8, reg); spin_unlock_irq(&rt2x00dev->irqmask_lock); } } static void rt2400pci_tbtt_tasklet(unsigned long data) { struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data; rt2x00lib_beacondone(rt2x00dev); if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) rt2400pci_enable_interrupt(rt2x00dev, CSR8_TBCN_EXPIRE); } static void rt2400pci_rxdone_tasklet(unsigned long data) { struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data; if (rt2x00mmio_rxdone(rt2x00dev)) tasklet_schedule(&rt2x00dev->rxdone_tasklet); else if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) rt2400pci_enable_interrupt(rt2x00dev, CSR8_RXDONE); } static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance) { struct rt2x00_dev *rt2x00dev = dev_instance; u32 reg, mask; /* * Get the interrupt sources & saved to local variable. * Write register value back to clear pending interrupts. */ reg = rt2x00mmio_register_read(rt2x00dev, CSR7); rt2x00mmio_register_write(rt2x00dev, CSR7, reg); if (!reg) return IRQ_NONE; if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) return IRQ_HANDLED; mask = reg; /* * Schedule tasklets for interrupt handling. */ if (rt2x00_get_field32(reg, CSR7_TBCN_EXPIRE)) tasklet_hi_schedule(&rt2x00dev->tbtt_tasklet); if (rt2x00_get_field32(reg, CSR7_RXDONE)) tasklet_schedule(&rt2x00dev->rxdone_tasklet); if (rt2x00_get_field32(reg, CSR7_TXDONE_ATIMRING) || rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING) || rt2x00_get_field32(reg, CSR7_TXDONE_TXRING)) { tasklet_schedule(&rt2x00dev->txstatus_tasklet); /* * Mask out all txdone interrupts. */ rt2x00_set_field32(&mask, CSR8_TXDONE_TXRING, 1); rt2x00_set_field32(&mask, CSR8_TXDONE_ATIMRING, 1); rt2x00_set_field32(&mask, CSR8_TXDONE_PRIORING, 1); } /* * Disable all interrupts for which a tasklet was scheduled right now, * the tasklet will reenable the appropriate interrupts. */ spin_lock(&rt2x00dev->irqmask_lock); reg = rt2x00mmio_register_read(rt2x00dev, CSR8); reg |= mask; rt2x00mmio_register_write(rt2x00dev, CSR8, reg); spin_unlock(&rt2x00dev->irqmask_lock); 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; reg = rt2x00mmio_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); rt2x00lib_set_mac_address(rt2x00dev, mac); word = rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA); if (word == 0xffff) { rt2x00_err(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. */ eeprom = rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA); /* * Identify RF chipset. */ value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE); reg = rt2x00mmio_register_read(rt2x00dev, CSR0); rt2x00_set_chip(rt2x00dev, RT2460, value, rt2x00_get_field32(reg, CSR0_REVISION)); if (!rt2x00_rf(rt2x00dev, RF2420) && !rt2x00_rf(rt2x00dev, RF2421)) { rt2x00_err(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_RT2X00_LIB_LEDS value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE); rt2400pci_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO); if (value == LED_MODE_TXRX_ACTIVITY || value == LED_MODE_DEFAULT || value == LED_MODE_ASUS) rt2400pci_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_ACTIVITY); #endif /* CONFIG_RT2X00_LIB_LEDS */ /* * Detect if this device has an hardware controlled radio. */ if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO)) __set_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags); /* * Check if the BBP tuning should be enabled. */ if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING)) __set_bit(CAPABILITY_LINK_TUNING, &rt2x00dev->cap_flags); return 0; } /* * RF value list for RF2420 & RF2421 * Supports: 2.4 GHz */ static const struct rf_channel rf_vals_b[] = { { 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 int rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev) { struct hw_mode_spec *spec = &rt2x00dev->spec; struct channel_info *info; char *tx_power; unsigned int i; /* * Initialize all hw fields. */ ieee80211_hw_set(rt2x00dev->hw, PS_NULLFUNC_STACK); ieee80211_hw_set(rt2x00dev->hw, SUPPORTS_PS); ieee80211_hw_set(rt2x00dev->hw, HOST_BROADCAST_PS_BUFFERING); ieee80211_hw_set(rt2x00dev->hw, SIGNAL_DBM); SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev); SET_IEEE80211_PERM_ADDR(rt2x00dev->hw, rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0)); /* * Initialize hw_mode information. */ spec->supported_bands = SUPPORT_BAND_2GHZ; spec->supported_rates = SUPPORT_RATE_CCK; spec->num_channels = ARRAY_SIZE(rf_vals_b); spec->channels = rf_vals_b; /* * Create channel information array */ info = kcalloc(spec->num_channels, sizeof(*info), GFP_KERNEL); if (!info) return -ENOMEM; spec->channels_info = info; tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START); for (i = 0; i < 14; i++) { info[i].max_power = TXPOWER_FROM_DEV(MAX_TXPOWER); info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]); } return 0; } static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev) { int retval; u32 reg; /* * Allocate eeprom data. */ retval = rt2400pci_validate_eeprom(rt2x00dev); if (retval) return retval; retval = rt2400pci_init_eeprom(rt2x00dev); if (retval) return retval; /* * Enable rfkill polling by setting GPIO direction of the * rfkill switch GPIO pin correctly. */ reg = rt2x00mmio_register_read(rt2x00dev, GPIOCSR); rt2x00_set_field32(®, GPIOCSR_DIR0, 1); rt2x00mmio_register_write(rt2x00dev, GPIOCSR, reg); /* * Initialize hw specifications. */ retval = rt2400pci_probe_hw_mode(rt2x00dev); if (retval) return retval; /* * This device requires the atim queue and DMA-mapped skbs. */ __set_bit(REQUIRE_ATIM_QUEUE, &rt2x00dev->cap_flags); __set_bit(REQUIRE_DMA, &rt2x00dev->cap_flags); __set_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags); /* * Set the rssi offset. */ rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET; return 0; } /* * IEEE80211 stack callback functions. */ static int rt2400pci_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 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 != 0) return -EINVAL; if (rt2x00mac_conf_tx(hw, vif, 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 ieee80211_vif *vif) { struct rt2x00_dev *rt2x00dev = hw->priv; u64 tsf; u32 reg; reg = rt2x00mmio_register_read(rt2x00dev, CSR17); tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32; reg = rt2x00mmio_register_read(rt2x00dev, CSR16); tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER); return tsf; } static int rt2400pci_tx_last_beacon(struct ieee80211_hw *hw) { struct rt2x00_dev *rt2x00dev = hw->priv; u32 reg; reg = rt2x00mmio_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, .configure_filter = rt2x00mac_configure_filter, .sw_scan_start = rt2x00mac_sw_scan_start, .sw_scan_complete = rt2x00mac_sw_scan_complete, .get_stats = rt2x00mac_get_stats, .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2400pci_conf_tx, .get_tsf = rt2400pci_get_tsf, .tx_last_beacon = rt2400pci_tx_last_beacon, .rfkill_poll = rt2x00mac_rfkill_poll, .flush = rt2x00mac_flush, .set_antenna = rt2x00mac_set_antenna, .get_antenna = rt2x00mac_get_antenna, .get_ringparam = rt2x00mac_get_ringparam, .tx_frames_pending = rt2x00mac_tx_frames_pending, }; static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = { .irq_handler = rt2400pci_interrupt, .txstatus_tasklet = rt2400pci_txstatus_tasklet, .tbtt_tasklet = rt2400pci_tbtt_tasklet, .rxdone_tasklet = rt2400pci_rxdone_tasklet, .probe_hw = rt2400pci_probe_hw, .initialize = rt2x00mmio_initialize, .uninitialize = rt2x00mmio_uninitialize, .get_entry_state = rt2400pci_get_entry_state, .clear_entry = rt2400pci_clear_entry, .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, .start_queue = rt2400pci_start_queue, .kick_queue = rt2400pci_kick_queue, .stop_queue = rt2400pci_stop_queue, .flush_queue = rt2x00mmio_flush_queue, .write_tx_desc = rt2400pci_write_tx_desc, .write_beacon = rt2400pci_write_beacon, .fill_rxdone = rt2400pci_fill_rxdone, .config_filter = rt2400pci_config_filter, .config_intf = rt2400pci_config_intf, .config_erp = rt2400pci_config_erp, .config_ant = rt2400pci_config_ant, .config = rt2400pci_config, }; static void rt2400pci_queue_init(struct data_queue *queue) { switch (queue->qid) { case QID_RX: queue->limit = 24; queue->data_size = DATA_FRAME_SIZE; queue->desc_size = RXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_mmio); break; case QID_AC_VO: case QID_AC_VI: case QID_AC_BE: case QID_AC_BK: queue->limit = 24; queue->data_size = DATA_FRAME_SIZE; queue->desc_size = TXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_mmio); break; case QID_BEACON: queue->limit = 1; queue->data_size = MGMT_FRAME_SIZE; queue->desc_size = TXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_mmio); break; case QID_ATIM: queue->limit = 8; queue->data_size = DATA_FRAME_SIZE; queue->desc_size = TXD_DESC_SIZE; queue->priv_size = sizeof(struct queue_entry_priv_mmio); break; default: BUG(); break; } } static const struct rt2x00_ops rt2400pci_ops = { .name = KBUILD_MODNAME, .max_ap_intf = 1, .eeprom_size = EEPROM_SIZE, .rf_size = RF_SIZE, .tx_queues = NUM_TX_QUEUES, .queue_init = rt2400pci_queue_init, .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 const struct pci_device_id rt2400pci_device_table[] = { { PCI_DEVICE(0x1814, 0x0101) }, { 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 int rt2400pci_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) { return rt2x00pci_probe(pci_dev, &rt2400pci_ops); } static struct pci_driver rt2400pci_driver = { .name = KBUILD_MODNAME, .id_table = rt2400pci_device_table, .probe = rt2400pci_probe, .remove = rt2x00pci_remove, .suspend = rt2x00pci_suspend, .resume = rt2x00pci_resume, }; module_pci_driver(rt2400pci_driver);
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