diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2500usb.c')
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2500usb.c | 307 |
1 files changed, 134 insertions, 173 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c index d90512f97b39..3558cb210747 100644 --- a/drivers/net/wireless/rt2x00/rt2500usb.c +++ b/drivers/net/wireless/rt2x00/rt2500usb.c @@ -76,10 +76,10 @@ static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev, const unsigned int offset, void *value, const u16 length) { - int timeout = REGISTER_TIMEOUT * (length / sizeof(u16)); rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ, USB_VENDOR_REQUEST_IN, offset, - value, length, timeout); + value, length, + REGISTER_TIMEOUT16(length)); } static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev, @@ -106,10 +106,10 @@ static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev, const unsigned int offset, void *value, const u16 length) { - int timeout = REGISTER_TIMEOUT * (length / sizeof(u16)); rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE, USB_VENDOR_REQUEST_OUT, offset, - value, length, timeout); + value, length, + REGISTER_TIMEOUT16(length)); } static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev) @@ -322,6 +322,17 @@ static int rt2500usb_blink_set(struct led_classdev *led_cdev, return 0; } + +static void rt2500usb_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 = rt2500usb_brightness_set; + led->led_dev.blink_set = rt2500usb_blink_set; + led->flags = LED_INITIALIZED; +} #endif /* CONFIG_RT2500USB_LEDS */ /* @@ -860,25 +871,32 @@ static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev) return 0; } -static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev) +static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev) { unsigned int i; - u16 eeprom; u8 value; - u8 reg_id; for (i = 0; i < REGISTER_BUSY_COUNT; i++) { rt2500usb_bbp_read(rt2x00dev, 0, &value); if ((value != 0xff) && (value != 0x00)) - goto continue_csr_init; - NOTICE(rt2x00dev, "Waiting for BBP register.\n"); + return 0; udelay(REGISTER_BUSY_DELAY); } ERROR(rt2x00dev, "BBP register access failed, aborting.\n"); return -EACCES; +} + +static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev) +{ + unsigned int i; + u16 eeprom; + u8 value; + u8 reg_id; + + if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev))) + return -EACCES; -continue_csr_init: rt2500usb_bbp_write(rt2x00dev, 3, 0x02); rt2500usb_bbp_write(rt2x00dev, 4, 0x19); rt2500usb_bbp_write(rt2x00dev, 14, 0x1c); @@ -934,7 +952,8 @@ static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev, rt2500usb_register_read(rt2x00dev, TXRX_CSR2, ®); rt2x00_set_field16(®, TXRX_CSR2_DISABLE_RX, - state == STATE_RADIO_RX_OFF); + (state == STATE_RADIO_RX_OFF) || + (state == STATE_RADIO_RX_OFF_LINK)); rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg); } @@ -943,11 +962,9 @@ static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev) /* * Initialize all registers. */ - if (rt2500usb_init_registers(rt2x00dev) || - rt2500usb_init_bbp(rt2x00dev)) { - ERROR(rt2x00dev, "Register initialization failed.\n"); + if (unlikely(rt2500usb_init_registers(rt2x00dev) || + rt2500usb_init_bbp(rt2x00dev))) return -EIO; - } return 0; } @@ -1000,10 +1017,6 @@ static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev, msleep(30); } - NOTICE(rt2x00dev, "Device failed to enter state %d, " - "current device state: bbp %d and rf %d.\n", - state, bbp_state, rf_state); - return -EBUSY; } @@ -1021,11 +1034,13 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev, break; case STATE_RADIO_RX_ON: case STATE_RADIO_RX_ON_LINK: - rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); - break; case STATE_RADIO_RX_OFF: case STATE_RADIO_RX_OFF_LINK: - rt2500usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); + rt2500usb_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: @@ -1038,6 +1053,10 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev, break; } + if (unlikely(retval)) + ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n", + state, retval); + return retval; } @@ -1046,8 +1065,7 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev, */ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb, - struct txentry_desc *txdesc, - struct ieee80211_tx_control *control) + struct txentry_desc *txdesc) { struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); __le32 *txd = skbdesc->desc; @@ -1071,7 +1089,7 @@ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev, rt2x00_desc_write(txd, 2, word); rt2x00_desc_read(txd, 0, &word); - rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit); + rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit); rt2x00_set_field32(&word, TXD_W0_MORE_FRAG, test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_ACK, @@ -1081,13 +1099,73 @@ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev, rt2x00_set_field32(&word, TXD_W0_OFDM, test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_NEW_SEQ, - !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)); + test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags)); rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs); - rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len); + rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, + skb->len - skbdesc->desc_len); rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE); rt2x00_desc_write(txd, 0, word); } +/* + * TX data initialization + */ +static void rt2500usb_beacondone(struct urb *urb); + +static void rt2500usb_write_beacon(struct queue_entry *entry) +{ + struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; + struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev); + struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data; + struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); + int pipe = usb_sndbulkpipe(usb_dev, 1); + int length; + u16 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. + */ + rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®); + rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 0); + rt2x00_set_field16(®, TXRX_CSR19_TBCN, 0); + rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0); + rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); + + /* + * USB devices cannot blindly pass the skb->len as the + * length of the data to usb_fill_bulk_urb. Pass the skb + * to the driver to determine what the length should be. + */ + length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, entry->skb); + + usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe, + entry->skb->data, length, rt2500usb_beacondone, + entry); + + /* + * Second we need to create the guardian byte. + * We only need a single byte, so lets recycle + * the 'flags' field we are not using for beacons. + */ + bcn_priv->guardian_data = 0; + usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe, + &bcn_priv->guardian_data, 1, rt2500usb_beacondone, + entry); + + /* + * Send out the guardian byte. + */ + usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC); +} + static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb) { @@ -1103,16 +1181,15 @@ static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev, return length; } -/* - * TX data initialization - */ static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev, - const unsigned int queue) + const enum data_queue_qid queue) { u16 reg; - if (queue != RT2X00_BCN_QUEUE_BEACON) + if (queue != QID_BEACON) { + rt2x00usb_kick_tx_queue(rt2x00dev, queue); return; + } rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®); if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) { @@ -1138,30 +1215,28 @@ static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev, static void rt2500usb_fill_rxdone(struct queue_entry *entry, struct rxdone_entry_desc *rxdesc) { - struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data; + struct queue_entry_priv_usb *entry_priv = entry->priv_data; struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb); __le32 *rxd = (__le32 *)(entry->skb->data + - (priv_rx->urb->actual_length - entry->queue->desc_size)); - unsigned int offset = entry->queue->desc_size + 2; + (entry_priv->urb->actual_length - + entry->queue->desc_size)); u32 word0; u32 word1; /* - * Copy descriptor to the available headroom inside the skbuffer. + * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of + * frame data in rt2x00usb. */ - skb_push(entry->skb, offset); - memcpy(entry->skb->data, rxd, entry->queue->desc_size); - rxd = (__le32 *)entry->skb->data; + memcpy(skbdesc->desc, rxd, skbdesc->desc_len); + rxd = (__le32 *)skbdesc->desc; /* - * The descriptor is now aligned to 4 bytes and thus it is - * now safe to read it on all architectures. + * It is now safe to read the descriptor on all architectures. */ rt2x00_desc_read(rxd, 0, &word0); rt2x00_desc_read(rxd, 1, &word1); - rxdesc->flags = 0; if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR)) rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC; if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR)) @@ -1178,7 +1253,6 @@ static void rt2500usb_fill_rxdone(struct queue_entry *entry, entry->queue->rt2x00dev->rssi_offset; rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT); - rxdesc->dev_flags = 0; if (rt2x00_get_field32(word0, RXD_W0_OFDM)) rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP; if (rt2x00_get_field32(word0, RXD_W0_MY_BSS)) @@ -1187,16 +1261,7 @@ static void rt2500usb_fill_rxdone(struct queue_entry *entry, /* * Adjust the skb memory window to the frame boundaries. */ - skb_pull(entry->skb, offset); skb_trim(entry->skb, rxdesc->size); - - /* - * Set descriptor and data pointer. - */ - skbdesc->data = entry->skb->data; - skbdesc->data_len = rxdesc->size; - skbdesc->desc = rxd; - skbdesc->desc_len = entry->queue->desc_size; } /* @@ -1205,7 +1270,7 @@ static void rt2500usb_fill_rxdone(struct queue_entry *entry, static void rt2500usb_beacondone(struct urb *urb) { struct queue_entry *entry = (struct queue_entry *)urb->context; - struct queue_entry_priv_usb_bcn *priv_bcn = entry->priv_data; + struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data; if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags)) return; @@ -1216,9 +1281,9 @@ static void rt2500usb_beacondone(struct urb *urb) * Otherwise we should free the sk_buffer, the device * should be doing the rest of the work now. */ - if (priv_bcn->guardian_urb == urb) { - usb_submit_urb(priv_bcn->urb, GFP_ATOMIC); - } else if (priv_bcn->urb == urb) { + if (bcn_priv->guardian_urb == urb) { + usb_submit_urb(bcn_priv->urb, GFP_ATOMIC); + } else if (bcn_priv->urb == urb) { dev_kfree_skb(entry->skb); entry->skb = NULL; } @@ -1397,23 +1462,10 @@ static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev) #ifdef CONFIG_RT2500USB_LEDS value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE); - rt2x00dev->led_radio.rt2x00dev = rt2x00dev; - rt2x00dev->led_radio.type = LED_TYPE_RADIO; - rt2x00dev->led_radio.led_dev.brightness_set = - rt2500usb_brightness_set; - rt2x00dev->led_radio.led_dev.blink_set = - rt2500usb_blink_set; - rt2x00dev->led_radio.flags = LED_INITIALIZED; - - if (value == LED_MODE_TXRX_ACTIVITY) { - rt2x00dev->led_qual.rt2x00dev = rt2x00dev; - rt2x00dev->led_qual.type = LED_TYPE_ACTIVITY; - rt2x00dev->led_qual.led_dev.brightness_set = - rt2500usb_brightness_set; - rt2x00dev->led_qual.led_dev.blink_set = - rt2500usb_blink_set; - rt2x00dev->led_qual.flags = LED_INITIALIZED; - } + rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO); + if (value == LED_MODE_TXRX_ACTIVITY) + rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual, + LED_TYPE_ACTIVITY); #endif /* CONFIG_RT2500USB_LEDS */ /* @@ -1600,13 +1652,12 @@ static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev) rt2x00dev->hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE | IEEE80211_HW_RX_INCLUDES_FCS | - IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; + IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | + IEEE80211_HW_SIGNAL_DBM; + rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE; - rt2x00dev->hw->max_signal = MAX_SIGNAL; - rt2x00dev->hw->max_rssi = MAX_RX_SSI; - rt2x00dev->hw->queues = 2; - SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev); + SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev); SET_IEEE80211_PERM_ADDR(rt2x00dev->hw, rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0)); @@ -1684,97 +1735,6 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev) return 0; } -/* - * IEEE80211 stack callback functions. - */ -static int rt2500usb_beacon_update(struct ieee80211_hw *hw, - struct sk_buff *skb, - struct ieee80211_tx_control *control) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev); - struct rt2x00_intf *intf = vif_to_intf(control->vif); - struct queue_entry_priv_usb_bcn *priv_bcn; - struct skb_frame_desc *skbdesc; - int pipe = usb_sndbulkpipe(usb_dev, 1); - int length; - u16 reg; - - if (unlikely(!intf->beacon)) - return -ENOBUFS; - - priv_bcn = intf->beacon->priv_data; - - /* - * Add the descriptor in front of the skb. - */ - skb_push(skb, intf->beacon->queue->desc_size); - memset(skb->data, 0, intf->beacon->queue->desc_size); - - /* - * Fill in skb descriptor - */ - skbdesc = get_skb_frame_desc(skb); - memset(skbdesc, 0, sizeof(*skbdesc)); - skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED; - skbdesc->data = skb->data + intf->beacon->queue->desc_size; - skbdesc->data_len = skb->len - intf->beacon->queue->desc_size; - skbdesc->desc = skb->data; - skbdesc->desc_len = intf->beacon->queue->desc_size; - skbdesc->entry = intf->beacon; - - /* - * Disable beaconing while we are reloading the beacon data, - * otherwise we might be sending out invalid data. - */ - rt2500usb_register_read(rt2x00dev, TXRX_CSR19, ®); - rt2x00_set_field16(®, TXRX_CSR19_TSF_COUNT, 0); - rt2x00_set_field16(®, TXRX_CSR19_TBCN, 0); - rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0); - rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg); - - /* - * mac80211 doesn't provide the control->queue variable - * for beacons. Set our own queue identification so - * it can be used during descriptor initialization. - */ - control->queue = RT2X00_BCN_QUEUE_BEACON; - rt2x00lib_write_tx_desc(rt2x00dev, skb, control); - - /* - * USB devices cannot blindly pass the skb->len as the - * length of the data to usb_fill_bulk_urb. Pass the skb - * to the driver to determine what the length should be. - */ - length = rt2500usb_get_tx_data_len(rt2x00dev, skb); - - usb_fill_bulk_urb(priv_bcn->urb, usb_dev, pipe, - skb->data, length, rt2500usb_beacondone, - intf->beacon); - - /* - * Second we need to create the guardian byte. - * We only need a single byte, so lets recycle - * the 'flags' field we are not using for beacons. - */ - priv_bcn->guardian_data = 0; - usb_fill_bulk_urb(priv_bcn->guardian_urb, usb_dev, pipe, - &priv_bcn->guardian_data, 1, rt2500usb_beacondone, - intf->beacon); - - /* - * Send out the guardian byte. - */ - usb_submit_urb(priv_bcn->guardian_urb, GFP_ATOMIC); - - /* - * Enable beacon generation. - */ - rt2500usb_kick_tx_queue(rt2x00dev, control->queue); - - return 0; -} - static const struct ieee80211_ops rt2500usb_mac80211_ops = { .tx = rt2x00mac_tx, .start = rt2x00mac_start, @@ -1788,7 +1748,6 @@ static const struct ieee80211_ops rt2500usb_mac80211_ops = { .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2x00mac_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, - .beacon_update = rt2500usb_beacon_update, }; static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = { @@ -1803,6 +1762,7 @@ static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = { .link_tuner = rt2500usb_link_tuner, .write_tx_desc = rt2500usb_write_tx_desc, .write_tx_data = rt2x00usb_write_tx_data, + .write_beacon = rt2500usb_write_beacon, .get_tx_data_len = rt2500usb_get_tx_data_len, .kick_tx_queue = rt2500usb_kick_tx_queue, .fill_rxdone = rt2500usb_fill_rxdone, @@ -1816,14 +1776,14 @@ static const struct data_queue_desc rt2500usb_queue_rx = { .entry_num = RX_ENTRIES, .data_size = DATA_FRAME_SIZE, .desc_size = RXD_DESC_SIZE, - .priv_size = sizeof(struct queue_entry_priv_usb_rx), + .priv_size = sizeof(struct queue_entry_priv_usb), }; static const struct data_queue_desc rt2500usb_queue_tx = { .entry_num = TX_ENTRIES, .data_size = DATA_FRAME_SIZE, .desc_size = TXD_DESC_SIZE, - .priv_size = sizeof(struct queue_entry_priv_usb_tx), + .priv_size = sizeof(struct queue_entry_priv_usb), }; static const struct data_queue_desc rt2500usb_queue_bcn = { @@ -1837,7 +1797,7 @@ static const struct data_queue_desc rt2500usb_queue_atim = { .entry_num = ATIM_ENTRIES, .data_size = DATA_FRAME_SIZE, .desc_size = TXD_DESC_SIZE, - .priv_size = sizeof(struct queue_entry_priv_usb_tx), + .priv_size = sizeof(struct queue_entry_priv_usb), }; static const struct rt2x00_ops rt2500usb_ops = { @@ -1846,6 +1806,7 @@ static const struct rt2x00_ops rt2500usb_ops = { .max_ap_intf = 1, .eeprom_size = EEPROM_SIZE, .rf_size = RF_SIZE, + .tx_queues = NUM_TX_QUEUES, .rx = &rt2500usb_queue_rx, .tx = &rt2500usb_queue_tx, .bcn = &rt2500usb_queue_bcn, |