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-rw-r--r--package/rt2x00/src/rt2x00dev.c1202
1 files changed, 0 insertions, 1202 deletions
diff --git a/package/rt2x00/src/rt2x00dev.c b/package/rt2x00/src/rt2x00dev.c
deleted file mode 100644
index ff399f808..000000000
--- a/package/rt2x00/src/rt2x00dev.c
+++ /dev/null
@@ -1,1202 +0,0 @@
-/*
- Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
- <http://rt2x00.serialmonkey.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the
- Free Software Foundation, Inc.,
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-/*
- Module: rt2x00lib
- Abstract: rt2x00 generic device routines.
- */
-
-/*
- * Set enviroment defines for rt2x00.h
- */
-#define DRV_NAME "rt2x00lib"
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-
-#include "rt2x00.h"
-#include "rt2x00lib.h"
-
-/*
- * Ring handler.
- */
-struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
- const unsigned int queue)
-{
- int beacon = test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
-
- /*
- * Check if we are requesting a reqular TX ring,
- * or if we are requesting a Beacon or Atim ring.
- * For Atim rings, we should check if it is supported.
- */
- if (queue < rt2x00dev->hw->queues && rt2x00dev->tx)
- return &rt2x00dev->tx[queue];
-
- if (!rt2x00dev->bcn || !beacon)
- return NULL;
-
- if (queue == IEEE80211_TX_QUEUE_BEACON)
- return &rt2x00dev->bcn[0];
- else if (queue == IEEE80211_TX_QUEUE_AFTER_BEACON)
- return &rt2x00dev->bcn[1];
-
- return NULL;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_get_ring);
-
-/*
- * Link tuning handlers
- */
-static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
- rt2x00_clear_link(&rt2x00dev->link);
-
- /*
- * Reset the link tuner.
- */
- rt2x00dev->ops->lib->reset_tuner(rt2x00dev);
-
- queue_delayed_work(rt2x00dev->hw->workqueue,
- &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
-}
-
-static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
- cancel_delayed_work_sync(&rt2x00dev->link.work);
-}
-
-void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- rt2x00lib_stop_link_tuner(rt2x00dev);
- rt2x00lib_start_link_tuner(rt2x00dev);
-}
-
-/*
- * Radio control handlers.
- */
-int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
-{
- int status;
-
- /*
- * Don't enable the radio twice.
- * And check if the hardware button has been disabled.
- */
- if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
- test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags))
- return 0;
-
- /*
- * Enable radio.
- */
- status = rt2x00dev->ops->lib->set_device_state(rt2x00dev,
- STATE_RADIO_ON);
- if (status)
- return status;
-
- __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags);
-
- /*
- * Enable RX.
- */
- rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
-
- /*
- * Start the TX queues.
- */
- ieee80211_start_queues(rt2x00dev->hw);
-
- return 0;
-}
-
-void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
-{
- if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- /*
- * Stop all scheduled work.
- */
- if (work_pending(&rt2x00dev->beacon_work))
- cancel_work_sync(&rt2x00dev->beacon_work);
- if (work_pending(&rt2x00dev->filter_work))
- cancel_work_sync(&rt2x00dev->filter_work);
- if (work_pending(&rt2x00dev->config_work))
- cancel_work_sync(&rt2x00dev->config_work);
-
- /*
- * Stop the TX queues.
- */
- ieee80211_stop_queues(rt2x00dev->hw);
-
- /*
- * Disable RX.
- */
- rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
-
- /*
- * Disable radio.
- */
- rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF);
-}
-
-void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state)
-{
- /*
- * When we are disabling the RX, we should also stop the link tuner.
- */
- if (state == STATE_RADIO_RX_OFF)
- rt2x00lib_stop_link_tuner(rt2x00dev);
-
- rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
-
- /*
- * When we are enabling the RX, we should also start the link tuner.
- */
- if (state == STATE_RADIO_RX_ON &&
- is_interface_present(&rt2x00dev->interface))
- rt2x00lib_start_link_tuner(rt2x00dev);
-}
-
-static void rt2x00lib_precalculate_link_signal(struct link *link)
-{
- if (link->rx_failed || link->rx_success)
- link->rx_percentage =
- (link->rx_success * 100) /
- (link->rx_failed + link->rx_success);
- else
- link->rx_percentage = 50;
-
- if (link->tx_failed || link->tx_success)
- link->tx_percentage =
- (link->tx_success * 100) /
- (link->tx_failed + link->tx_success);
- else
- link->tx_percentage = 50;
-
- link->rx_success = 0;
- link->rx_failed = 0;
- link->tx_success = 0;
- link->tx_failed = 0;
-}
-
-static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev,
- int rssi)
-{
- int rssi_percentage = 0;
- int signal;
-
- /*
- * We need a positive value for the RSSI.
- */
- if (rssi < 0)
- rssi += rt2x00dev->rssi_offset;
-
- /*
- * Calculate the different percentages,
- * which will be used for the signal.
- */
- if (rt2x00dev->rssi_offset)
- rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset;
-
- /*
- * Add the individual percentages and use the WEIGHT
- * defines to calculate the current link signal.
- */
- signal = ((WEIGHT_RSSI * rssi_percentage) +
- (WEIGHT_TX * rt2x00dev->link.tx_percentage) +
- (WEIGHT_RX * rt2x00dev->link.rx_percentage)) / 100;
-
- return (signal > 100) ? 100 : signal;
-}
-
-static void rt2x00lib_link_tuner(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, link.work.work);
-
- /*
- * When the radio is shutting down we should
- * immediately cease all link tuning.
- */
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- /*
- * Update statistics.
- */
- rt2x00dev->ops->lib->link_stats(rt2x00dev);
-
- rt2x00dev->low_level_stats.dot11FCSErrorCount +=
- rt2x00dev->link.rx_failed;
-
- /*
- * Only perform the link tuning when Link tuning
- * has been enabled (This could have been disabled from the EEPROM).
- */
- if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags))
- rt2x00dev->ops->lib->link_tuner(rt2x00dev);
-
- /*
- * Precalculate a portion of the link signal which is
- * in based on the tx/rx success/failure counters.
- */
- rt2x00lib_precalculate_link_signal(&rt2x00dev->link);
-
- /*
- * Increase tuner counter, and reschedule the next link tuner run.
- */
- rt2x00dev->link.count++;
- queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work,
- LINK_TUNE_INTERVAL);
-}
-
-static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, filter_work);
- unsigned int filter = rt2x00dev->interface.filter;
-
- /*
- * Since we had stored the filter inside interface.filter,
- * we should now clear that field. Otherwise the driver will
- * assume nothing has changed (*total_flags will be compared
- * to interface.filter to determine if any action is required).
- */
- rt2x00dev->interface.filter = 0;
-
- rt2x00dev->ops->hw->configure_filter(rt2x00dev->hw,
- filter, &filter, 0, NULL);
-}
-
-static void rt2x00lib_configuration_scheduled(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, config_work);
- int preamble = !test_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags);
-
- rt2x00mac_erp_ie_changed(rt2x00dev->hw,
- IEEE80211_ERP_CHANGE_PREAMBLE, 0, preamble);
-}
-
-/*
- * Interrupt context handlers.
- */
-static void rt2x00lib_beacondone_scheduled(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, beacon_work);
- struct data_ring *ring =
- rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
- struct data_entry *entry = rt2x00_get_data_entry(ring);
- struct sk_buff *skb;
-
- skb = ieee80211_beacon_get(rt2x00dev->hw,
- rt2x00dev->interface.id,
- &entry->tx_status.control);
- if (!skb)
- return;
-
- rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb,
- &entry->tx_status.control);
-
- dev_kfree_skb(skb);
-}
-
-void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
-{
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->beacon_work);
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
-
-void rt2x00lib_txdone(struct data_entry *entry,
- const int status, const int retry)
-{
- struct rt2x00_dev *rt2x00dev = entry->ring->rt2x00dev;
- struct ieee80211_tx_status *tx_status = &entry->tx_status;
- struct ieee80211_low_level_stats *stats = &rt2x00dev->low_level_stats;
- int success = !!(status == TX_SUCCESS || status == TX_SUCCESS_RETRY);
- int fail = !!(status == TX_FAIL_RETRY || status == TX_FAIL_INVALID ||
- status == TX_FAIL_OTHER);
-
- /*
- * Update TX statistics.
- */
- tx_status->flags = 0;
- tx_status->ack_signal = 0;
- tx_status->excessive_retries = (status == TX_FAIL_RETRY);
- tx_status->retry_count = retry;
- rt2x00dev->link.tx_success += success;
- rt2x00dev->link.tx_failed += retry + fail;
-
- if (!(tx_status->control.flags & IEEE80211_TXCTL_NO_ACK)) {
- if (success)
- tx_status->flags |= IEEE80211_TX_STATUS_ACK;
- else
- stats->dot11ACKFailureCount++;
- }
-
- tx_status->queue_length = entry->ring->stats.limit;
- tx_status->queue_number = tx_status->control.queue;
-
- if (tx_status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) {
- if (success)
- stats->dot11RTSSuccessCount++;
- else
- stats->dot11RTSFailureCount++;
- }
-
- /*
- * Send the tx_status to mac80211,
- * that method also cleans up the skb structure.
- */
- ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb, tx_status);
- entry->skb = NULL;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
-
-void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
- struct rxdata_entry_desc *desc)
-{
- struct rt2x00_dev *rt2x00dev = entry->ring->rt2x00dev;
- struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
- struct ieee80211_hw_mode *mode;
- struct ieee80211_rate *rate;
- unsigned int i;
- int val = 0;
-
- /*
- * Update RX statistics.
- */
- mode = &rt2x00dev->hwmodes[rt2x00dev->curr_hwmode];
- for (i = 0; i < mode->num_rates; i++) {
- rate = &mode->rates[i];
-
- /*
- * When frame was received with an OFDM bitrate,
- * the signal is the PLCP value. If it was received with
- * a CCK bitrate the signal is the rate in 0.5kbit/s.
- */
- if (!desc->ofdm)
- val = DEVICE_GET_RATE_FIELD(rate->val, RATE);
- else
- val = DEVICE_GET_RATE_FIELD(rate->val, PLCP);
-
- if (val == desc->signal) {
- val = rate->val;
- break;
- }
- }
-
- rt2x00_update_link_rssi(&rt2x00dev->link, desc->rssi);
- rt2x00dev->link.rx_success++;
- rx_status->rate = val;
- rx_status->signal =
- rt2x00lib_calculate_link_signal(rt2x00dev, desc->rssi);
- rx_status->ssi = desc->rssi;
- rx_status->flag = desc->flags;
-
- /*
- * Send frame to mac80211
- */
- ieee80211_rx_irqsafe(rt2x00dev->hw, skb, rx_status);
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
-
-/*
- * TX descriptor initializer
- */
-void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
- struct data_desc *txd,
- struct ieee80211_hdr *ieee80211hdr,
- unsigned int length,
- struct ieee80211_tx_control *control)
-{
- struct txdata_entry_desc desc;
- struct data_ring *ring;
- int tx_rate;
- int bitrate;
- int duration;
- int residual;
- u16 frame_control;
- u16 seq_ctrl;
-
- /*
- * Make sure the descriptor is properly cleared.
- */
- memset(&desc, 0x00, sizeof(desc));
-
- /*
- * Get ring pointer, if we fail to obtain the
- * correct ring, then use the first TX ring.
- */
- ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
- if (!ring)
- ring = rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
-
- desc.cw_min = ring->tx_params.cw_min;
- desc.cw_max = ring->tx_params.cw_max;
- desc.aifs = ring->tx_params.aifs;
-
- /*
- * Identify queue
- */
- if (control->queue < rt2x00dev->hw->queues)
- desc.queue = control->queue;
- else if (control->queue == IEEE80211_TX_QUEUE_BEACON ||
- control->queue == IEEE80211_TX_QUEUE_AFTER_BEACON)
- desc.queue = QUEUE_MGMT;
- else
- desc.queue = QUEUE_OTHER;
-
- /*
- * Read required fields from ieee80211 header.
- */
- frame_control = le16_to_cpu(ieee80211hdr->frame_control);
- seq_ctrl = le16_to_cpu(ieee80211hdr->seq_ctrl);
-
- tx_rate = control->tx_rate;
-
- /*
- * Check if this is a RTS/CTS frame
- */
- if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) {
- __set_bit(ENTRY_TXD_BURST, &desc.flags);
- if (is_rts_frame(frame_control))
- __set_bit(ENTRY_TXD_RTS_FRAME, &desc.flags);
- if (control->rts_cts_rate)
- tx_rate = control->rts_cts_rate;
- }
-
- /*
- * Check for OFDM
- */
- if (DEVICE_GET_RATE_FIELD(tx_rate, RATEMASK) & DEV_OFDM_RATEMASK)
- __set_bit(ENTRY_TXD_OFDM_RATE, &desc.flags);
-
- /*
- * Check if more fragments are pending
- */
- if (ieee80211_get_morefrag(ieee80211hdr)) {
- __set_bit(ENTRY_TXD_BURST, &desc.flags);
- __set_bit(ENTRY_TXD_MORE_FRAG, &desc.flags);
- }
-
- /*
- * Beacons and probe responses require the tsf timestamp
- * to be inserted into the frame.
- */
- if (control->queue == IEEE80211_TX_QUEUE_BEACON ||
- is_probe_resp(frame_control))
- __set_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc.flags);
-
- /*
- * Determine with what IFS priority this frame should be send.
- * Set ifs to IFS_SIFS when the this is not the first fragment,
- * or this fragment came after RTS/CTS.
- */
- if ((seq_ctrl & IEEE80211_SCTL_FRAG) > 0 ||
- test_bit(ENTRY_TXD_RTS_FRAME, &desc.flags))
- desc.ifs = IFS_SIFS;
- else
- desc.ifs = IFS_BACKOFF;
-
- /*
- * PLCP setup
- * Length calculation depends on OFDM/CCK rate.
- */
- desc.signal = DEVICE_GET_RATE_FIELD(tx_rate, PLCP);
- desc.service = 0x04;
-
- if (test_bit(ENTRY_TXD_OFDM_RATE, &desc.flags)) {
- desc.length_high = ((length + FCS_LEN) >> 6) & 0x3f;
- desc.length_low = ((length + FCS_LEN) & 0x3f);
- } else {
- bitrate = DEVICE_GET_RATE_FIELD(tx_rate, RATE);
-
- /*
- * Convert length to microseconds.
- */
- residual = get_duration_res(length + FCS_LEN, bitrate);
- duration = get_duration(length + FCS_LEN, bitrate);
-
- if (residual != 0) {
- duration++;
-
- /*
- * Check if we need to set the Length Extension
- */
- if (bitrate == 110 && residual <= 30)
- desc.service |= 0x80;
- }
-
- desc.length_high = (duration >> 8) & 0xff;
- desc.length_low = duration & 0xff;
-
- /*
- * When preamble is enabled we should set the
- * preamble bit for the signal.
- */
- if (DEVICE_GET_RATE_FIELD(tx_rate, PREAMBLE))
- desc.signal |= 0x08;
- }
-
- rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, txd, &desc,
- ieee80211hdr, length, control);
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_write_tx_desc);
-
-/*
- * Driver initialization handlers.
- */
-static void rt2x00lib_channel(struct ieee80211_channel *entry,
- const int channel, const int tx_power,
- const int value)
-{
- entry->chan = channel;
- if (channel <= 14)
- entry->freq = 2407 + (5 * channel);
- else
- entry->freq = 5000 + (5 * channel);
- entry->val = value;
- entry->flag =
- IEEE80211_CHAN_W_IBSS |
- IEEE80211_CHAN_W_ACTIVE_SCAN |
- IEEE80211_CHAN_W_SCAN;
- entry->power_level = tx_power;
- entry->antenna_max = 0xff;
-}
-
-static void rt2x00lib_rate(struct ieee80211_rate *entry,
- const int rate, const int mask,
- const int plcp, const int flags)
-{
- entry->rate = rate;
- entry->val =
- DEVICE_SET_RATE_FIELD(rate, RATE) |
- DEVICE_SET_RATE_FIELD(mask, RATEMASK) |
- DEVICE_SET_RATE_FIELD(plcp, PLCP);
- entry->flags = flags;
- entry->val2 = entry->val;
- if (entry->flags & IEEE80211_RATE_PREAMBLE2)
- entry->val2 |= DEVICE_SET_RATE_FIELD(1, PREAMBLE);
- entry->min_rssi_ack = 0;
- entry->min_rssi_ack_delta = 0;
-}
-
-static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
- struct hw_mode_spec *spec)
-{
- struct ieee80211_hw *hw = rt2x00dev->hw;
- struct ieee80211_hw_mode *hwmodes;
- struct ieee80211_channel *channels;
- struct ieee80211_rate *rates;
- unsigned int i;
- unsigned char tx_power;
-
- hwmodes = kzalloc(sizeof(*hwmodes) * spec->num_modes, GFP_KERNEL);
- if (!hwmodes)
- goto exit;
-
- channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL);
- if (!channels)
- goto exit_free_modes;
-
- rates = kzalloc(sizeof(*rates) * spec->num_rates, GFP_KERNEL);
- if (!rates)
- goto exit_free_channels;
-
- /*
- * Initialize Rate list.
- */
- rt2x00lib_rate(&rates[0], 10, DEV_RATEMASK_1MB,
- 0x00, IEEE80211_RATE_CCK);
- rt2x00lib_rate(&rates[1], 20, DEV_RATEMASK_2MB,
- 0x01, IEEE80211_RATE_CCK_2);
- rt2x00lib_rate(&rates[2], 55, DEV_RATEMASK_5_5MB,
- 0x02, IEEE80211_RATE_CCK_2);
- rt2x00lib_rate(&rates[3], 110, DEV_RATEMASK_11MB,
- 0x03, IEEE80211_RATE_CCK_2);
-
- if (spec->num_rates > 4) {
- rt2x00lib_rate(&rates[4], 60, DEV_RATEMASK_6MB,
- 0x0b, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[5], 90, DEV_RATEMASK_9MB,
- 0x0f, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[6], 120, DEV_RATEMASK_12MB,
- 0x0a, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[7], 180, DEV_RATEMASK_18MB,
- 0x0e, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[8], 240, DEV_RATEMASK_24MB,
- 0x09, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[9], 360, DEV_RATEMASK_36MB,
- 0x0d, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[10], 480, DEV_RATEMASK_48MB,
- 0x08, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[11], 540, DEV_RATEMASK_54MB,
- 0x0c, IEEE80211_RATE_OFDM);
- }
-
- /*
- * Initialize Channel list.
- */
- for (i = 0; i < spec->num_channels; i++) {
- if (spec->channels[i].channel <= 14)
- tx_power = spec->tx_power_bg[i];
- else if (spec->tx_power_a)
- tx_power = spec->tx_power_a[i];
- else
- tx_power = spec->tx_power_default;
-
- rt2x00lib_channel(&channels[i],
- spec->channels[i].channel, tx_power, i);
- }
-
- /*
- * Intitialize 802.11b
- * Rates: CCK.
- * Channels: OFDM.
- */
- if (spec->num_modes > HWMODE_B) {
- hwmodes[HWMODE_B].mode = MODE_IEEE80211B;
- hwmodes[HWMODE_B].num_channels = 14;
- hwmodes[HWMODE_B].num_rates = 4;
- hwmodes[HWMODE_B].channels = channels;
- hwmodes[HWMODE_B].rates = rates;
- }
-
- /*
- * Intitialize 802.11g
- * Rates: CCK, OFDM.
- * Channels: OFDM.
- */
- if (spec->num_modes > HWMODE_G) {
- hwmodes[HWMODE_G].mode = MODE_IEEE80211G;
- hwmodes[HWMODE_G].num_channels = 14;
- hwmodes[HWMODE_G].num_rates = spec->num_rates;
- hwmodes[HWMODE_G].channels = channels;
- hwmodes[HWMODE_G].rates = rates;
- }
-
- /*
- * Intitialize 802.11a
- * Rates: OFDM.
- * Channels: OFDM, UNII, HiperLAN2.
- */
- if (spec->num_modes > HWMODE_A) {
- hwmodes[HWMODE_A].mode = MODE_IEEE80211A;
- hwmodes[HWMODE_A].num_channels = spec->num_channels - 14;
- hwmodes[HWMODE_A].num_rates = spec->num_rates - 4;
- hwmodes[HWMODE_A].channels = &channels[14];
- hwmodes[HWMODE_A].rates = &rates[4];
- }
-
- if (spec->num_modes > HWMODE_G &&
- ieee80211_register_hwmode(hw, &hwmodes[HWMODE_G]))
- goto exit_free_rates;
-
- if (spec->num_modes > HWMODE_B &&
- ieee80211_register_hwmode(hw, &hwmodes[HWMODE_B]))
- goto exit_free_rates;
-
- if (spec->num_modes > HWMODE_A &&
- ieee80211_register_hwmode(hw, &hwmodes[HWMODE_A]))
- goto exit_free_rates;
-
- rt2x00dev->hwmodes = hwmodes;
-
- return 0;
-
-exit_free_rates:
- kfree(rates);
-
-exit_free_channels:
- kfree(channels);
-
-exit_free_modes:
- kfree(hwmodes);
-
-exit:
- ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n");
- return -ENOMEM;
-}
-
-static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
-{
- if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags))
- ieee80211_unregister_hw(rt2x00dev->hw);
-
- if (likely(rt2x00dev->hwmodes)) {
- kfree(rt2x00dev->hwmodes->channels);
- kfree(rt2x00dev->hwmodes->rates);
- kfree(rt2x00dev->hwmodes);
- rt2x00dev->hwmodes = NULL;
- }
-}
-
-static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
-{
- struct hw_mode_spec *spec = &rt2x00dev->spec;
- int status;
-
- /*
- * Initialize HW modes.
- */
- status = rt2x00lib_probe_hw_modes(rt2x00dev, spec);
- if (status)
- return status;
-
- /*
- * Register HW.
- */
- status = ieee80211_register_hw(rt2x00dev->hw);
- if (status) {
- rt2x00lib_remove_hw(rt2x00dev);
- return status;
- }
-
- __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags);
-
- return 0;
-}
-
-/*
- * Initialization/uninitialization handlers.
- */
-static int rt2x00lib_alloc_entries(struct data_ring *ring,
- const u16 max_entries, const u16 data_size,
- const u16 desc_size)
-{
- struct data_entry *entry;
- unsigned int i;
-
- ring->stats.limit = max_entries;
- ring->data_size = data_size;
- ring->desc_size = desc_size;
-
- /*
- * Allocate all ring entries.
- */
- entry = kzalloc(ring->stats.limit * sizeof(*entry), GFP_KERNEL);
- if (!entry)
- return -ENOMEM;
-
- for (i = 0; i < ring->stats.limit; i++) {
- entry[i].flags = 0;
- entry[i].ring = ring;
- entry[i].skb = NULL;
- }
-
- ring->entry = entry;
-
- return 0;
-}
-
-static int rt2x00lib_alloc_ring_entries(struct rt2x00_dev *rt2x00dev)
-{
- struct data_ring *ring;
-
- /*
- * Allocate the RX ring.
- */
- if (rt2x00lib_alloc_entries(rt2x00dev->rx, RX_ENTRIES, DATA_FRAME_SIZE,
- rt2x00dev->ops->rxd_size))
- return -ENOMEM;
-
- /*
- * First allocate the TX rings.
- */
- txring_for_each(rt2x00dev, ring) {
- if (rt2x00lib_alloc_entries(ring, TX_ENTRIES, DATA_FRAME_SIZE,
- rt2x00dev->ops->txd_size))
- return -ENOMEM;
- }
-
- if (!test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags))
- return 0;
-
- /*
- * Allocate the BEACON ring.
- */
- if (rt2x00lib_alloc_entries(&rt2x00dev->bcn[0], BEACON_ENTRIES,
- MGMT_FRAME_SIZE, rt2x00dev->ops->txd_size))
- return -ENOMEM;
-
- /*
- * Allocate the Atim ring.
- */
- if (rt2x00lib_alloc_entries(&rt2x00dev->bcn[1], ATIM_ENTRIES,
- DATA_FRAME_SIZE, rt2x00dev->ops->txd_size))
- return -ENOMEM;
-
- return 0;
-}
-
-static void rt2x00lib_free_ring_entries(struct rt2x00_dev *rt2x00dev)
-{
- struct data_ring *ring;
-
- ring_for_each(rt2x00dev, ring) {
- kfree(ring->entry);
- ring->entry = NULL;
- }
-}
-
-void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
-{
- if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
- return;
-
- /*
- * Unregister rfkill.
- */
- rt2x00rfkill_unregister(rt2x00dev);
-
- /*
- * Allow the HW to uninitialize.
- */
- rt2x00dev->ops->lib->uninitialize(rt2x00dev);
-
- /*
- * Free allocated ring entries.
- */
- rt2x00lib_free_ring_entries(rt2x00dev);
-}
-
-int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
-{
- int status;
-
- if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
- return 0;
-
- /*
- * Allocate all ring entries.
- */
- status = rt2x00lib_alloc_ring_entries(rt2x00dev);
- if (status) {
- ERROR(rt2x00dev, "Ring entries allocation failed.\n");
- return status;
- }
-
- /*
- * Initialize the device.
- */
- status = rt2x00dev->ops->lib->initialize(rt2x00dev);
- if (status)
- goto exit;
-
- __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags);
-
- /*
- * Register the rfkill handler.
- */
- status = rt2x00rfkill_register(rt2x00dev);
- if (status)
- goto exit_unitialize;
-
- return 0;
-
-exit_unitialize:
- rt2x00lib_uninitialize(rt2x00dev);
-
-exit:
- rt2x00lib_free_ring_entries(rt2x00dev);
-
- return status;
-}
-
-/*
- * driver allocation handlers.
- */
-static int rt2x00lib_alloc_rings(struct rt2x00_dev *rt2x00dev)
-{
- struct data_ring *ring;
-
- /*
- * We need the following rings:
- * RX: 1
- * TX: hw->queues
- * Beacon: 1 (if required)
- * Atim: 1 (if required)
- */
- rt2x00dev->data_rings = 1 + rt2x00dev->hw->queues +
- (2 * test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags));
-
- ring = kzalloc(rt2x00dev->data_rings * sizeof(*ring), GFP_KERNEL);
- if (!ring) {
- ERROR(rt2x00dev, "Ring allocation failed.\n");
- return -ENOMEM;
- }
-
- /*
- * Initialize pointers
- */
- rt2x00dev->rx = ring;
- rt2x00dev->tx = &rt2x00dev->rx[1];
- if (test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags))
- rt2x00dev->bcn = &rt2x00dev->tx[rt2x00dev->hw->queues];
-
- /*
- * Initialize ring parameters.
- * cw_min: 2^5 = 32.
- * cw_max: 2^10 = 1024.
- */
- ring_for_each(rt2x00dev, ring) {
- ring->rt2x00dev = rt2x00dev;
- ring->tx_params.aifs = 2;
- ring->tx_params.cw_min = 5;
- ring->tx_params.cw_max = 10;
- }
-
- return 0;
-}
-
-static void rt2x00lib_free_rings(struct rt2x00_dev *rt2x00dev)
-{
- kfree(rt2x00dev->rx);
- rt2x00dev->rx = NULL;
- rt2x00dev->tx = NULL;
- rt2x00dev->bcn = NULL;
-}
-
-int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
-{
- int retval = -ENOMEM;
-
- /*
- * Let the driver probe the device to detect the capabilities.
- */
- retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev);
- if (retval) {
- ERROR(rt2x00dev, "Failed to allocate device.\n");
- goto exit;
- }
-
- /*
- * Initialize configuration work.
- */
- INIT_WORK(&rt2x00dev->beacon_work, rt2x00lib_beacondone_scheduled);
- INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
- INIT_WORK(&rt2x00dev->config_work, rt2x00lib_configuration_scheduled);
- INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner);
-
- /*
- * Reset current working type.
- */
- rt2x00dev->interface.type = INVALID_INTERFACE;
-
- /*
- * Allocate ring array.
- */
- retval = rt2x00lib_alloc_rings(rt2x00dev);
- if (retval)
- goto exit;
-
- /*
- * Initialize ieee80211 structure.
- */
- retval = rt2x00lib_probe_hw(rt2x00dev);
- if (retval) {
- ERROR(rt2x00dev, "Failed to initialize hw.\n");
- goto exit;
- }
-
- /*
- * Allocatie rfkill.
- */
- retval = rt2x00rfkill_allocate(rt2x00dev);
- if (retval)
- goto exit;
-
- /*
- * Open the debugfs entry.
- */
- rt2x00debug_register(rt2x00dev);
-
- __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
-
- return 0;
-
-exit:
- rt2x00lib_remove_dev(rt2x00dev);
-
- return retval;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev);
-
-void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
-{
- __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
-
- /*
- * Disable radio.
- */
- rt2x00lib_disable_radio(rt2x00dev);
-
- /*
- * Uninitialize device.
- */
- rt2x00lib_uninitialize(rt2x00dev);
-
- /*
- * Close debugfs entry.
- */
- rt2x00debug_deregister(rt2x00dev);
-
- /*
- * Free rfkill
- */
- rt2x00rfkill_free(rt2x00dev);
-
- /*
- * Free ieee80211_hw memory.
- */
- rt2x00lib_remove_hw(rt2x00dev);
-
- /*
- * Free firmware image.
- */
- rt2x00lib_free_firmware(rt2x00dev);
-
- /*
- * Free ring structures.
- */
- rt2x00lib_free_rings(rt2x00dev);
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
-
-/*
- * Device state handlers
- */
-#ifdef CONFIG_PM
-int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
-{
- int retval;
-
- NOTICE(rt2x00dev, "Going to sleep.\n");
- __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
-
- /*
- * Only continue if mac80211 has open interfaces.
- */
- if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
- goto exit;
- __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags);
-
- /*
- * Disable radio and unitialize all items
- * that must be recreated on resume.
- */
- rt2x00mac_stop(rt2x00dev->hw);
- rt2x00lib_uninitialize(rt2x00dev);
- rt2x00debug_deregister(rt2x00dev);
-
-exit:
- /*
- * Set device mode to sleep for power management.
- */
- retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP);
- if (retval)
- return retval;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_suspend);
-
-int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
-{
- struct interface *intf = &rt2x00dev->interface;
- int retval;
-
- NOTICE(rt2x00dev, "Waking up.\n");
- __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
-
- /*
- * Open the debugfs entry.
- */
- rt2x00debug_register(rt2x00dev);
-
- /*
- * Only continue if mac80211 had open interfaces.
- */
- if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags))
- return 0;
-
- /*
- * Reinitialize device and all active interfaces.
- */
- retval = rt2x00mac_start(rt2x00dev->hw);
- if (retval)
- goto exit;
-
- /*
- * Reconfigure device.
- */
- rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1);
- if (!rt2x00dev->hw->conf.radio_enabled)
- rt2x00lib_disable_radio(rt2x00dev);
-
- rt2x00lib_config_mac_addr(rt2x00dev, intf->mac);
- rt2x00lib_config_bssid(rt2x00dev, intf->bssid);
- rt2x00lib_config_type(rt2x00dev, intf->type);
-
- /*
- * It is possible that during that mac80211 has attempted
- * to send frames while we were suspending or resuming.
- * In that case we have disabled the TX queue and should
- * now enable it again
- */
- ieee80211_start_queues(rt2x00dev->hw);
-
- /*
- * When in Master or Ad-hoc mode,
- * restart Beacon transmitting by faking a beacondone event.
- */
- if (intf->type == IEEE80211_IF_TYPE_AP ||
- intf->type == IEEE80211_IF_TYPE_IBSS)
- rt2x00lib_beacondone(rt2x00dev);
-
- return 0;
-
-exit:
- rt2x00lib_disable_radio(rt2x00dev);
- rt2x00lib_uninitialize(rt2x00dev);
- rt2x00debug_deregister(rt2x00dev);
-
- return retval;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_resume);
-#endif /* CONFIG_PM */
-
-/*
- * rt2x00lib module information.
- */
-MODULE_AUTHOR(DRV_PROJECT);
-MODULE_VERSION(DRV_VERSION);
-MODULE_DESCRIPTION("rt2x00 library");
-MODULE_LICENSE("GPL");