/* Copyright (C) 2009 Ivo van Doorn Copyright (C) 2009 Mattias Nissler Copyright (C) 2009 Felix Fietkau Copyright (C) 2009 Xose Vazquez Perez Copyright (C) 2009 Axel Kollhofer 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: rt2800usb Abstract: rt2800usb device specific routines. Supported chipsets: RT2800U. */ #include #include #include #include #include #include #include #include "rt2x00.h" #include "rt2x00usb.h" #include "rt2800lib.h" #include "rt2800.h" #include "rt2800usb.h" /* * Allow hardware encryption to be disabled. */ static int modparam_nohwcrypt = 1; module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); /* * Firmware functions */ static char *rt2800usb_get_firmware_name(struct rt2x00_dev *rt2x00dev) { return FIRMWARE_RT2870; } static bool rt2800usb_check_crc(const u8 *data, const size_t len) { u16 fw_crc; u16 crc; /* * The last 2 bytes in the firmware array are the crc checksum itself, * this means that we should never pass those 2 bytes to the crc * algorithm. */ fw_crc = (data[len - 2] << 8 | data[len - 1]); /* * Use the crc ccitt algorithm. * This will return the same value as the legacy driver which * used bit ordering reversion on the both the firmware bytes * before input input as well as on the final output. * Obviously using crc ccitt directly is much more efficient. */ crc = crc_ccitt(~0, data, len - 2); /* * There is a small difference between the crc-itu-t + bitrev and * the crc-ccitt crc calculation. In the latter method the 2 bytes * will be swapped, use swab16 to convert the crc to the correct * value. */ crc = swab16(crc); return fw_crc == crc; } static int rt2800usb_check_firmware(struct rt2x00_dev *rt2x00dev, const u8 *data, const size_t len) { size_t offset = 0; /* * Firmware files: * There are 2 variations of the rt2870 firmware. * a) size: 4kb * b) size: 8kb * Note that (b) contains 2 seperate firmware blobs of 4k * within the file. The first blob is the same firmware as (a), * but the second blob is for the additional chipsets. */ if (len != 4096 && len != 8192) return FW_BAD_LENGTH; /* * Check if we need the upper 4kb firmware data or not. */ if ((len == 4096) && !rt2x00_rt(rt2x00dev, RT2860) && !rt2x00_rt(rt2x00dev, RT2872) && !rt2x00_rt(rt2x00dev, RT3070)) return FW_BAD_VERSION; /* * 8kb firmware files must be checked as if it were * 2 seperate firmware files. */ while (offset < len) { if (!rt2800usb_check_crc(data + offset, 4096)) return FW_BAD_CRC; offset += 4096; } return FW_OK; } static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev, const u8 *data, const size_t len) { unsigned int i; int status; u32 reg; u32 offset; u32 length; /* * Check which section of the firmware we need. */ if (rt2x00_rt(rt2x00dev, RT2860) || rt2x00_rt(rt2x00dev, RT2872) || rt2x00_rt(rt2x00dev, RT3070)) { offset = 0; length = 4096; } else { offset = 4096; length = 4096; } /* * Wait for stable hardware. */ for (i = 0; i < REGISTER_BUSY_COUNT; i++) { rt2800_register_read(rt2x00dev, MAC_CSR0, ®); if (reg && reg != ~0) break; msleep(1); } if (i == REGISTER_BUSY_COUNT) { ERROR(rt2x00dev, "Unstable hardware.\n"); return -EBUSY; } /* * Write firmware to device. */ rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, FIRMWARE_IMAGE_BASE, data + offset, length, REGISTER_TIMEOUT32(length)); rt2800_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0); rt2800_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0); /* * Send firmware request to device to load firmware, * we need to specify a long timeout time. */ status = rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0, USB_MODE_FIRMWARE, REGISTER_TIMEOUT_FIRMWARE); if (status < 0) { ERROR(rt2x00dev, "Failed to write Firmware to device.\n"); return status; } msleep(10); rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); /* * Send signal to firmware during boot time. */ rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0xff, 0, 0); if (rt2x00_rt(rt2x00dev, RT3070) || rt2x00_rt(rt2x00dev, RT3071) || rt2x00_rt(rt2x00dev, RT3572)) { udelay(200); rt2800_mcu_request(rt2x00dev, MCU_CURRENT, 0, 0, 0); udelay(10); } /* * Wait for device to stabilize. */ for (i = 0; i < REGISTER_BUSY_COUNT; i++) { rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, ®); if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY)) break; msleep(1); } if (i == REGISTER_BUSY_COUNT) { ERROR(rt2x00dev, "PBF system register not ready.\n"); return -EBUSY; } /* * Initialize firmware. */ rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); msleep(1); return 0; } /* * Device state switch handlers. */ static void rt2800usb_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state) { u32 reg; rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, ®); rt2x00_set_field32(®, MAC_SYS_CTRL_ENABLE_RX, (state == STATE_RADIO_RX_ON) || (state == STATE_RADIO_RX_ON_LINK)); rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg); } static int rt2800usb_enable_radio(struct rt2x00_dev *rt2x00dev) { u32 reg; u16 word; /* * Initialize all registers. */ if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev) || rt2800_init_registers(rt2x00dev) || rt2800_init_bbp(rt2x00dev) || rt2800_init_rfcsr(rt2x00dev))) return -EIO; rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, ®); rt2x00_set_field32(®, MAC_SYS_CTRL_ENABLE_TX, 1); rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg); udelay(50); rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, ®); rt2x00_set_field32(®, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1); rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_RX_DMA, 1); rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_TX_DMA, 1); rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg); rt2800_register_read(rt2x00dev, USB_DMA_CFG, ®); rt2x00_set_field32(®, USB_DMA_CFG_PHY_CLEAR, 0); rt2x00_set_field32(®, USB_DMA_CFG_RX_BULK_AGG_EN, 0); rt2x00_set_field32(®, USB_DMA_CFG_RX_BULK_AGG_TIMEOUT, 128); /* * Total room for RX frames in kilobytes, PBF might still exceed * this limit so reduce the number to prevent errors. */ rt2x00_set_field32(®, USB_DMA_CFG_RX_BULK_AGG_LIMIT, ((RX_ENTRIES * DATA_FRAME_SIZE) / 1024) - 3); rt2x00_set_field32(®, USB_DMA_CFG_RX_BULK_EN, 1); rt2x00_set_field32(®, USB_DMA_CFG_TX_BULK_EN, 1); rt2800_register_write(rt2x00dev, USB_DMA_CFG, reg); rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, ®); rt2x00_set_field32(®, MAC_SYS_CTRL_ENABLE_TX, 1); rt2x00_set_field32(®, MAC_SYS_CTRL_ENABLE_RX, 1); rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg); /* * Initialize LED control */ rt2x00_eeprom_read(rt2x00dev, EEPROM_LED1, &word); rt2800_mcu_request(rt2x00dev, MCU_LED_1, 0xff, word & 0xff, (word >> 8) & 0xff); rt2x00_eeprom_read(rt2x00dev, EEPROM_LED2, &word); rt2800_mcu_request(rt2x00dev, MCU_LED_2, 0xff, word & 0xff, (word >> 8) & 0xff); rt2x00_eeprom_read(rt2x00dev, EEPROM_LED3, &word); rt2800_mcu_request(rt2x00dev, MCU_LED_3, 0xff, word & 0xff, (word >> 8) & 0xff); return 0; } static void rt2800usb_disable_radio(struct rt2x00_dev *rt2x00dev) { u32 reg; rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, ®); rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0); rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0); rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg); rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0); rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0); rt2800_register_write(rt2x00dev, TX_PIN_CFG, 0); /* Wait for DMA, ignore error */ rt2800_wait_wpdma_ready(rt2x00dev); rt2x00usb_disable_radio(rt2x00dev); } static int rt2800usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state) { if (state == STATE_AWAKE) rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, 0xff, 0, 0); else rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0xff, 0, 2); return 0; } static int rt2800usb_set_device_state(struct rt2x00_dev *rt2x00dev, enum dev_state state) { int retval = 0; switch (state) { case STATE_RADIO_ON: /* * Before the radio can be enabled, the device first has * to be woken up. After that it needs a bit of time * to be fully awake and then the radio can be enabled. */ rt2800usb_set_state(rt2x00dev, STATE_AWAKE); msleep(1); retval = rt2800usb_enable_radio(rt2x00dev); break; case STATE_RADIO_OFF: /* * After the radio has been disabled, the device should * be put to sleep for powersaving. */ rt2800usb_disable_radio(rt2x00dev); rt2800usb_set_state(rt2x00dev, STATE_SLEEP); break; case STATE_RADIO_RX_ON: case STATE_RADIO_RX_ON_LINK: case STATE_RADIO_RX_OFF: case STATE_RADIO_RX_OFF_LINK: rt2800usb_toggle_rx(rt2x00dev, state); break; case STATE_RADIO_IRQ_ON: case STATE_RADIO_IRQ_OFF: /* No support, but no error either */ break; case STATE_DEEP_SLEEP: case STATE_SLEEP: case STATE_STANDBY: case STATE_AWAKE: retval = rt2800usb_set_state(rt2x00dev, state); break; default: retval = -ENOTSUPP; break; } if (unlikely(retval)) ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n", state, retval); return retval; } /* * TX descriptor initialization */ static void rt2800usb_write_tx_desc(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb, struct txentry_desc *txdesc) { struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); __le32 *txi = skbdesc->desc; __le32 *txwi = &txi[TXINFO_DESC_SIZE / sizeof(__le32)]; u32 word; /* * Initialize TX Info descriptor */ rt2x00_desc_read(txwi, 0, &word); rt2x00_set_field32(&word, TXWI_W0_FRAG, test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W0_MIMO_PS, 0); rt2x00_set_field32(&word, TXWI_W0_CF_ACK, 0); rt2x00_set_field32(&word, TXWI_W0_TS, test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W0_AMPDU, test_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W0_MPDU_DENSITY, txdesc->mpdu_density); rt2x00_set_field32(&word, TXWI_W0_TX_OP, txdesc->ifs); rt2x00_set_field32(&word, TXWI_W0_MCS, txdesc->mcs); rt2x00_set_field32(&word, TXWI_W0_BW, test_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W0_SHORT_GI, test_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W0_STBC, txdesc->stbc); rt2x00_set_field32(&word, TXWI_W0_PHYMODE, txdesc->rate_mode); rt2x00_desc_write(txwi, 0, word); rt2x00_desc_read(txwi, 1, &word); rt2x00_set_field32(&word, TXWI_W1_ACK, test_bit(ENTRY_TXD_ACK, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W1_NSEQ, test_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags)); rt2x00_set_field32(&word, TXWI_W1_BW_WIN_SIZE, txdesc->ba_size); rt2x00_set_field32(&word, TXWI_W1_WIRELESS_CLI_ID, test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags) ? txdesc->key_idx : 0xff); rt2x00_set_field32(&word, TXWI_W1_MPDU_TOTAL_BYTE_COUNT, skb->len - txdesc->l2pad); rt2x00_set_field32(&word, TXWI_W1_PACKETID, skbdesc->entry->queue->qid + 1); rt2x00_desc_write(txwi, 1, word); /* * Always write 0 to IV/EIV fields, hardware will insert the IV * from the IVEIV register when TXINFO_W0_WIV is set to 0. * When TXINFO_W0_WIV is set to 1 it will use the IV data * from the descriptor. The TXWI_W1_WIRELESS_CLI_ID indicates which * crypto entry in the registers should be used to encrypt the frame. */ _rt2x00_desc_write(txwi, 2, 0 /* skbdesc->iv[0] */); _rt2x00_desc_write(txwi, 3, 0 /* skbdesc->iv[1] */); /* * Initialize TX descriptor */ rt2x00_desc_read(txi, 0, &word); rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_TX_PKT_LEN, skb->len + TXWI_DESC_SIZE); rt2x00_set_field32(&word, TXINFO_W0_WIV, !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags)); rt2x00_set_field32(&word, TXINFO_W0_QSEL, 2); rt2x00_set_field32(&word, TXINFO_W0_SW_USE_LAST_ROUND, 0); rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_NEXT_VALID, 0); rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_TX_BURST, test_bit(ENTRY_TXD_BURST, &txdesc->flags)); rt2x00_desc_write(txi, 0, word); } /* * TX data initialization */ static void rt2800usb_write_beacon(struct queue_entry *entry) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); unsigned int beacon_base; u32 reg; /* * Add the descriptor in front of the skb. */ skb_push(entry->skb, entry->queue->desc_size); memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len); skbdesc->desc = entry->skb->data; /* * Disable beaconing while we are reloading the beacon data, * otherwise we might be sending out invalid data. */ rt2800_register_read(rt2x00dev, BCN_TIME_CFG, ®); rt2x00_set_field32(®, BCN_TIME_CFG_BEACON_GEN, 0); rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg); /* * Write entire beacon with descriptor to register. */ beacon_base = HW_BEACON_OFFSET(entry->entry_idx); rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, beacon_base, entry->skb->data, entry->skb->len, REGISTER_TIMEOUT32(entry->skb->len)); /* * Clean up the beacon skb. */ dev_kfree_skb(entry->skb); entry->skb = NULL; } static int rt2800usb_get_tx_data_len(struct queue_entry *entry) { int length; /* * The length _must_ include 4 bytes padding, * it should always be multiple of 4, * but it must _not_ be a multiple of the USB packet size. */ length = roundup(entry->skb->len + 4, 4); length += (4 * !(length % entry->queue->usb_maxpacket)); return length; } static void rt2800usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev, const enum data_queue_qid queue) { u32 reg; if (queue != QID_BEACON) { rt2x00usb_kick_tx_queue(rt2x00dev, queue); return; } rt2800_register_read(rt2x00dev, BCN_TIME_CFG, ®); if (!rt2x00_get_field32(reg, BCN_TIME_CFG_BEACON_GEN)) { rt2x00_set_field32(®, BCN_TIME_CFG_TSF_TICKING, 1); rt2x00_set_field32(®, BCN_TIME_CFG_TBTT_ENABLE, 1); rt2x00_set_field32(®, BCN_TIME_CFG_BEACON_GEN, 1); rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg); } } /* * RX control handlers */ static void rt2800usb_fill_rxdone(struct queue_entry *entry, struct rxdone_entry_desc *rxdesc) { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); __le32 *rxi = (__le32 *)entry->skb->data; __le32 *rxwi; __le32 *rxd; u32 rxi0; u32 rxwi0; u32 rxwi1; u32 rxwi2; u32 rxwi3; u32 rxd0; int rx_pkt_len; /* * RX frame format is : * | RXINFO | RXWI | header | L2 pad | payload | pad | RXD | USB pad | * |<------------ rx_pkt_len -------------->| */ rt2x00_desc_read(rxi, 0, &rxi0); rx_pkt_len = rt2x00_get_field32(rxi0, RXINFO_W0_USB_DMA_RX_PKT_LEN); rxwi = (__le32 *)(entry->skb->data + RXINFO_DESC_SIZE); /* * FIXME : we need to check for rx_pkt_len validity */ rxd = (__le32 *)(entry->skb->data + RXINFO_DESC_SIZE + rx_pkt_len); /* * Copy descriptor to the skbdesc->desc buffer, making it safe from * moving of frame data in rt2x00usb. */ memcpy(skbdesc->desc, rxi, skbdesc->desc_len); /* * It is now safe to read the descriptor on all architectures. */ rt2x00_desc_read(rxwi, 0, &rxwi0); rt2x00_desc_read(rxwi, 1, &rxwi1); rt2x00_desc_read(rxwi, 2, &rxwi2); rt2x00_desc_read(rxwi, 3, &rxwi3); rt2x00_desc_read(rxd, 0, &rxd0); if (rt2x00_get_field32(rxd0, RXD_W0_CRC_ERROR)) rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC; if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) { rxdesc->cipher = rt2x00_get_field32(rxwi0, RXWI_W0_UDF); rxdesc->cipher_status = rt2x00_get_field32(rxd0, RXD_W0_CIPHER_ERROR); } if (rt2x00_get_field32(rxd0, RXD_W0_DECRYPTED)) { /* * Hardware has stripped IV/EIV data from 802.11 frame during * decryption. Unfortunately the descriptor doesn't contain * any fields with the EIV/IV data either, so they can't * be restored by rt2x00lib. */ rxdesc->flags |= RX_FLAG_IV_STRIPPED; if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS) rxdesc->flags |= RX_FLAG_DECRYPTED; else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC) rxdesc->flags |= RX_FLAG_MMIC_ERROR; } if (rt2x00_get_field32(rxd0, RXD_W0_MY_BSS)) rxdesc->dev_flags |= RXDONE_MY_BSS; if (rt2x00_get_field32(rxd0, RXD_W0_L2PAD)) rxdesc->dev_flags |= RXDONE_L2PAD; if (rt2x00_get_field32(rxwi1, RXWI_W1_SHORT_GI)) rxdesc->flags |= RX_FLAG_SHORT_GI; if (rt2x00_get_field32(rxwi1, RXWI_W1_BW)) rxdesc->flags |= RX_FLAG_40MHZ; /* * Detect RX rate, always use MCS as signal type. */ rxdesc->dev_flags |= RXDONE_SIGNAL_MCS; rxdesc->rate_mode = rt2x00_get_field32(rxwi1, RXWI_W1_PHYMODE); rxdesc->signal = rt2x00_get_field32(rxwi1, RXWI_W1_MCS); /* * Mask of 0x8 bit to remove the short preamble flag. */ if (rxdesc->rate_mode == RATE_MODE_CCK) rxdesc->signal &= ~0x8; rxdesc->rssi = (rt2x00_get_field32(rxwi2, RXWI_W2_RSSI0) + rt2x00_get_field32(rxwi2, RXWI_W2_RSSI1)) / 2; rxdesc->noise = (rt2x00_get_field32(rxwi3, RXWI_W3_SNR0) + rt2x00_get_field32(rxwi3, RXWI_W3_SNR1)) / 2; rxdesc->size = rt2x00_get_field32(rxwi0, RXWI_W0_MPDU_TOTAL_BYTE_COUNT); /* * Remove RXWI descriptor from start of buffer. */ skb_pull(entry->skb, skbdesc->desc_len); } /* * Device probe functions. */ static int rt2800usb_validate_eeprom(struct rt2x00_dev *rt2x00dev) { if (rt2800_efuse_detect(rt2x00dev)) rt2800_read_eeprom_efuse(rt2x00dev); else rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE); return rt2800_validate_eeprom(rt2x00dev); } static const struct rt2800_ops rt2800usb_rt2800_ops = { .register_read = rt2x00usb_register_read, .register_read_lock = rt2x00usb_register_read_lock, .register_write = rt2x00usb_register_write, .register_write_lock = rt2x00usb_register_write_lock, .register_multiread = rt2x00usb_register_multiread, .register_multiwrite = rt2x00usb_register_multiwrite, .regbusy_read = rt2x00usb_regbusy_read, }; static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev) { int retval; rt2x00dev->priv = (void *)&rt2800usb_rt2800_ops; /* * Allocate eeprom data. */ retval = rt2800usb_validate_eeprom(rt2x00dev); if (retval) return retval; retval = rt2800_init_eeprom(rt2x00dev); if (retval) return retval; /* * Initialize hw specifications. */ retval = rt2800_probe_hw_mode(rt2x00dev); if (retval) return retval; /* * This device has multiple filters for control frames * and has a separate filter for PS Poll frames. */ __set_bit(DRIVER_SUPPORT_CONTROL_FILTERS, &rt2x00dev->flags); __set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags); /* * This device requires firmware. */ __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags); __set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags); if (!modparam_nohwcrypt) __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags); /* * Set the rssi offset. */ rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET; return 0; } static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = { .probe_hw = rt2800usb_probe_hw, .get_firmware_name = rt2800usb_get_firmware_name, .check_firmware = rt2800usb_check_firmware, .load_firmware = rt2800usb_load_firmware, .initialize = rt2x00usb_initialize, .uninitialize = rt2x00usb_uninitialize, .clear_entry = rt2x00usb_clear_entry, .set_device_state = rt2800usb_set_device_state, .rfkill_poll = rt2800_rfkill_poll, .link_stats = rt2800_link_stats, .reset_tuner = rt2800_reset_tuner, .link_tuner = rt2800_link_tuner, .write_tx_desc = rt2800usb_write_tx_desc, .write_tx_data = rt2x00usb_write_tx_data, .write_beacon = rt2800usb_write_beacon, .get_tx_data_len = rt2800usb_get_tx_data_len, .kick_tx_queue = rt2800usb_kick_tx_queue, .kill_tx_queue = rt2x00usb_kill_tx_queue, .fill_rxdone = rt2800usb_fill_rxdone, .config_shared_key = rt2800_config_shared_key, .config_pairwise_key = rt2800_config_pairwise_key, .config_filter = rt2800_config_filter, .config_intf = rt2800_config_intf, .config_erp = rt2800_config_erp, .config_ant = rt2800_config_ant, .config = rt2800_config, }; static const struct data_queue_desc rt2800usb_queue_rx = { .entry_num = RX_ENTRIES, .data_size = AGGREGATION_SIZE, .desc_size = RXINFO_DESC_SIZE + RXWI_DESC_SIZE, .priv_size = sizeof(struct queue_entry_priv_usb), }; static const struct data_queue_desc rt2800usb_queue_tx = { .entry_num = TX_ENTRIES, .data_size = AGGREGATION_SIZE, .desc_size = TXINFO_DESC_SIZE + TXWI_DESC_SIZE, .priv_size = sizeof(struct queue_entry_priv_usb), }; static const struct data_queue_desc rt2800usb_queue_bcn = { .entry_num = 8 * BEACON_ENTRIES, .data_size = MGMT_FRAME_SIZE, .desc_size = TXINFO_DESC_SIZE + TXWI_DESC_SIZE, .priv_size = sizeof(struct queue_entry_priv_usb), }; static const struct rt2x00_ops rt2800usb_ops = { .name = KBUILD_MODNAME, .max_sta_intf = 1, .max_ap_intf = 8, .eeprom_size = EEPROM_SIZE, .rf_size = RF_SIZE, .tx_queues = NUM_TX_QUEUES, .extra_tx_headroom = TXINFO_DESC_SIZE + TXWI_DESC_SIZE, .rx = &rt2800usb_queue_rx, .tx = &rt2800usb_queue_tx, .bcn = &rt2800usb_queue_bcn, .lib = &rt2800usb_rt2x00_ops, .hw = &rt2800_mac80211_ops, #ifdef CONFIG_RT2X00_LIB_DEBUGFS .debugfs = &rt2800_rt2x00debug, #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ }; /* * rt2800usb module information. */ static struct usb_device_id rt2800usb_device_table[] = { /* Abocom */ { USB_DEVICE(0x07b8, 0x2870), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07b8, 0x2770), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07b8, 0x3070), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07b8, 0x3071), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07b8, 0x3072), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1482, 0x3c09), USB_DEVICE_DATA(&rt2800usb_ops) }, /* AirTies */ { USB_DEVICE(0x1eda, 0x2310), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Amigo */ { USB_DEVICE(0x0e0b, 0x9031), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0e0b, 0x9041), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Amit */ { USB_DEVICE(0x15c5, 0x0008), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Askey */ { USB_DEVICE(0x1690, 0x0740), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1690, 0x0744), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0930, 0x0a07), USB_DEVICE_DATA(&rt2800usb_ops) }, /* ASUS */ { USB_DEVICE(0x0b05, 0x1731), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0b05, 0x1732), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0b05, 0x1742), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0b05, 0x1760), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0b05, 0x1761), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0b05, 0x1784), USB_DEVICE_DATA(&rt2800usb_ops) }, /* AzureWave */ { USB_DEVICE(0x13d3, 0x3247), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x13d3, 0x3262), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x13d3, 0x3273), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x13d3, 0x3284), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x13d3, 0x3305), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Belkin */ { USB_DEVICE(0x050d, 0x8053), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x050d, 0x805c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x050d, 0x815c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x050d, 0x825a), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Buffalo */ { USB_DEVICE(0x0411, 0x00e8), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0411, 0x012e), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Cisco */ { USB_DEVICE(0x167b, 0x4001), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Conceptronic */ { USB_DEVICE(0x14b2, 0x3c06), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c07), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c08), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c09), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c11), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c12), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c23), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c25), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c27), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x14b2, 0x3c28), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Corega */ { USB_DEVICE(0x07aa, 0x002f), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07aa, 0x003c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07aa, 0x003f), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07aa, 0x0041), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07aa, 0x0042), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x18c5, 0x0008), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x18c5, 0x0012), USB_DEVICE_DATA(&rt2800usb_ops) }, /* D-Link */ { USB_DEVICE(0x07d1, 0x3c09), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c0a), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c0b), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c0d), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c0e), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c0f), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c11), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c13), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x07d1, 0x3c15), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Edimax */ { USB_DEVICE(0x7392, 0x7711), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x7392, 0x7717), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x7392, 0x7718), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Encore */ { USB_DEVICE(0x203d, 0x1480), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x203d, 0x14a1), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x203d, 0x14a9), USB_DEVICE_DATA(&rt2800usb_ops) }, /* EnGenius */ { USB_DEVICE(0X1740, 0x9701), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9702), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9703), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9705), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9706), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9707), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9708), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9709), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x9801), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Gemtek */ { USB_DEVICE(0x15a9, 0x0010), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Gigabyte */ { USB_DEVICE(0x1044, 0x800b), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1044, 0x800c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1044, 0x800d), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Hawking */ { USB_DEVICE(0x0e66, 0x0001), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0e66, 0x0003), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0e66, 0x0009), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0e66, 0x000b), USB_DEVICE_DATA(&rt2800usb_ops) }, /* I-O DATA */ { USB_DEVICE(0x04bb, 0x0944), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x04bb, 0x0945), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x04bb, 0x0947), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x04bb, 0x0948), USB_DEVICE_DATA(&rt2800usb_ops) }, /* LevelOne */ { USB_DEVICE(0x1740, 0x0605), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1740, 0x0615), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Linksys */ { USB_DEVICE(0x1737, 0x0070), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1737, 0x0071), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1737, 0x0077), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1737, 0x0079), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Logitec */ { USB_DEVICE(0x0789, 0x0162), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0789, 0x0163), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0789, 0x0164), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Motorola */ { USB_DEVICE(0x100d, 0x9031), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x100d, 0x9032), USB_DEVICE_DATA(&rt2800usb_ops) }, /* MSI */ { USB_DEVICE(0x0db0, 0x3820), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0db0, 0x3821), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0db0, 0x3870), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0db0, 0x6899), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0db0, 0x821a), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0db0, 0x870a), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0db0, 0x899a), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Ovislink */ { USB_DEVICE(0x1b75, 0x3072), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Para */ { USB_DEVICE(0x20b8, 0x8888), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Pegatron */ { USB_DEVICE(0x1d4d, 0x0002), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1d4d, 0x000c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x1d4d, 0x000e), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Philips */ { USB_DEVICE(0x0471, 0x200f), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Planex */ { USB_DEVICE(0x2019, 0xed06), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x2019, 0xab24), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x2019, 0xab25), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Qcom */ { USB_DEVICE(0x18e8, 0x6259), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Quanta */ { USB_DEVICE(0x1a32, 0x0304), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Ralink */ { USB_DEVICE(0x148f, 0x2070), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x148f, 0x2770), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x148f, 0x2870), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x148f, 0x3070), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x148f, 0x3071), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x148f, 0x3072), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x148f, 0x3572), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Samsung */ { USB_DEVICE(0x04e8, 0x2018), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Siemens */ { USB_DEVICE(0x129b, 0x1828), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Sitecom */ { USB_DEVICE(0x0df6, 0x0017), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x002b), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x002c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x002d), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x0039), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x003b), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x003c), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x003d), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x003e), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x003f), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x0040), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x0041), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x0042), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x0047), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x0048), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x004a), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0df6, 0x004d), USB_DEVICE_DATA(&rt2800usb_ops) }, /* SMC */ { USB_DEVICE(0x083a, 0x6618), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0x7511), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0x7512), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0x7522), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0x8522), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0xa512), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0xa618), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0xa701), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0xa702), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0xb522), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x083a, 0xc522), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Sparklan */ { USB_DEVICE(0x15a9, 0x0006), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Sweex */ { USB_DEVICE(0x177f, 0x0153), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x177f, 0x0302), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x177f, 0x0313), USB_DEVICE_DATA(&rt2800usb_ops) }, /* U-Media*/ { USB_DEVICE(0x157e, 0x300e), USB_DEVICE_DATA(&rt2800usb_ops) }, /* ZCOM */ { USB_DEVICE(0x0cde, 0x0022), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0cde, 0x0025), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Zinwell */ { USB_DEVICE(0x5a57, 0x0280), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x5a57, 0x0282), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x5a57, 0x0283), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x5a57, 0x0284), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x5a57, 0x5257), USB_DEVICE_DATA(&rt2800usb_ops) }, /* Zyxel */ { USB_DEVICE(0x0586, 0x3416), USB_DEVICE_DATA(&rt2800usb_ops) }, { USB_DEVICE(0x0586, 0x341a), USB_DEVICE_DATA(&rt2800usb_ops) }, { 0, } }; MODULE_AUTHOR(DRV_PROJECT); MODULE_VERSION(DRV_VERSION); MODULE_DESCRIPTION("Ralink RT2800 USB Wireless LAN driver."); MODULE_SUPPORTED_DEVICE("Ralink RT2870 USB chipset based cards"); MODULE_DEVICE_TABLE(usb, rt2800usb_device_table); MODULE_FIRMWARE(FIRMWARE_RT2870); MODULE_LICENSE("GPL"); static struct usb_driver rt2800usb_driver = { .name = KBUILD_MODNAME, .id_table = rt2800usb_device_table, .probe = rt2x00usb_probe, .disconnect = rt2x00usb_disconnect, .suspend = rt2x00usb_suspend, .resume = rt2x00usb_resume, }; static int __init rt2800usb_init(void) { return usb_register(&rt2800usb_driver); } static void __exit rt2800usb_exit(void) { usb_deregister(&rt2800usb_driver); } module_init(rt2800usb_init); module_exit(rt2800usb_exit);