/*
Module: rt2x00lib
Abstract: rt2x00 generic device routines.
- Supported chipsets: RT2460, RT2560, RT2570,
- rt2561, rt2561s, rt2661, rt2571W & rt2671.
*/
/*
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/etherdevice.h>
#include "rt2x00.h"
-#include "rt2x00dev.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.
/*
* Don't enable the radio twice.
- * or if the hardware button has been disabled.
+ * And check if the hardware button has been disabled.
*/
if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
- (test_bit(DEVICE_SUPPORT_HW_BUTTON, &rt2x00dev->flags) &&
- !test_bit(DEVICE_ENABLED_RADIO_HW, &rt2x00dev->flags)))
+ test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags))
return 0;
- status = rt2x00dev->ops->lib->set_device_state(
- rt2x00dev, STATE_RADIO_ON);
+ /*
+ * Enable radio.
+ */
+ status = rt2x00dev->ops->lib->set_device_state(rt2x00dev,
+ STATE_RADIO_ON);
if (status)
return status;
__set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags);
- rt2x00lib_toggle_rx(rt2x00dev, 1);
+ /*
+ * Enable RX.
+ */
+ rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+ /*
+ * Start the TX queues.
+ */
ieee80211_start_queues(rt2x00dev->hw);
return 0;
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);
- rt2x00lib_toggle_rx(rt2x00dev, 0);
+ /*
+ * 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, int enable)
+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;
+
/*
- * When we are disabling the rx, we should also stop the link tuner.
+ * We need a positive value for the RSSI.
*/
- if (!enable && work_pending(&rt2x00dev->link.work.work))
- rt2x00_stop_link_tune(rt2x00dev);
+ if (rssi < 0)
+ rssi += rt2x00dev->rssi_offset;
- rt2x00dev->ops->lib->set_device_state(rt2x00dev,
- enable ? STATE_RADIO_RX_ON : STATE_RADIO_RX_OFF);
+ /*
+ * Calculate the different percentages,
+ * which will be used for the signal.
+ */
+ if (rt2x00dev->rssi_offset)
+ rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset;
/*
- * When we are enabling the rx, we should also start the link tuner.
+ * Add the individual percentages and use the WEIGHT
+ * defines to calculate the current link signal.
*/
- if (enable)
- rt2x00_start_link_tune(rt2x00dev);
+ 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);
- int rssi;
+ container_of(work, struct rt2x00_dev, link.work.work);
/*
- * Update promisc mode (this function will first check
- * if updating is really required).
+ * When the radio is shutting down we should
+ * immediately cease all link tuning.
*/
- rt2x00lib_config_promisc(rt2x00dev, rt2x00dev->interface.promisc);
+ if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+ return;
/*
- * Cancel all link tuning if the eeprom has indicated
- * it is not required.
+ * Update statistics.
*/
- if (test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags))
- return;
+ rt2x00dev->ops->lib->link_stats(rt2x00dev);
+
+ rt2x00dev->low_level_stats.dot11FCSErrorCount +=
+ rt2x00dev->link.rx_failed;
/*
- * Retrieve link quality.
- * Also convert rssi to dBm using the max_rssi value.
+ * Only perform the link tuning when Link tuning
+ * has been enabled (This could have been disabled from the EEPROM).
*/
- rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
- rssi -= rt2x00dev->hw->max_rssi;
+ if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags))
+ rt2x00dev->ops->lib->link_tuner(rt2x00dev);
- rt2x00dev->ops->lib->link_tuner(rt2x00dev, rssi);
+ /*
+ * 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->workqueue, &rt2x00dev->link.work,
- LINK_TUNE_INTERVAL);
+ queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work,
+ LINK_TUNE_INTERVAL);
}
-/*
- * Config handlers
- */
-void rt2x00lib_config_type(struct rt2x00_dev *rt2x00dev, const int type)
+static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
{
- if (!(is_interface_present(&rt2x00dev->interface) ^
- test_bit(INTERFACE_ENABLED, &rt2x00dev->flags)) &&
- !(is_monitor_present(&rt2x00dev->interface) ^
- test_bit(INTERFACE_ENABLED_MONITOR, &rt2x00dev->flags)))
- return;
+ struct rt2x00_dev *rt2x00dev =
+ container_of(work, struct rt2x00_dev, filter_work);
+ unsigned int filter = rt2x00dev->interface.filter;
- rt2x00dev->ops->lib->config_type(rt2x00dev, type);
+ /*
+ * 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;
- if (type != IEEE80211_IF_TYPE_MNTR) {
- if (is_interface_present(&rt2x00dev->interface))
- __set_bit(INTERFACE_ENABLED, &rt2x00dev->flags);
- else
- __clear_bit(INTERFACE_ENABLED, &rt2x00dev->flags);
- } else {
- if (is_monitor_present(&rt2x00dev->interface))
- __set_bit(INTERFACE_ENABLED_MONITOR,
- &rt2x00dev->flags);
- else
- __clear_bit(INTERFACE_ENABLED_MONITOR,
- &rt2x00dev->flags);
- }
+ rt2x00dev->ops->hw->configure_filter(rt2x00dev->hw,
+ filter, &filter, 0, NULL);
}
-void rt2x00lib_config_phymode(struct rt2x00_dev *rt2x00dev, const int phymode)
+static void rt2x00lib_configuration_scheduled(struct work_struct *work)
{
- if (rt2x00dev->rx_status.phymode == phymode)
- return;
-
- rt2x00dev->ops->lib->config_phymode(rt2x00dev, phymode);
+ struct rt2x00_dev *rt2x00dev =
+ container_of(work, struct rt2x00_dev, config_work);
+ int preamble = !test_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags);
- rt2x00dev->rx_status.phymode = phymode;
+ rt2x00mac_erp_ie_changed(rt2x00dev->hw,
+ IEEE80211_ERP_CHANGE_PREAMBLE, 0, preamble);
}
-void rt2x00lib_config_channel(struct rt2x00_dev *rt2x00dev, const int value,
- const int channel, const int freq, const int txpower)
+/*
+ * Interrupt context handlers.
+ */
+static void rt2x00lib_beacondone_scheduled(struct work_struct *work)
{
- if (channel == rt2x00dev->rx_status.channel)
+ 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->lib->config_channel(rt2x00dev, value, channel, txpower);
+ rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb,
+ &entry->tx_status.control);
+
+ dev_kfree_skb(skb);
+}
- INFO(rt2x00dev, "Switching channel. "
- "RF1: 0x%08x, RF2: 0x%08x, RF3: 0x%08x, RF3: 0x%08x.\n",
- rt2x00dev->rf1, rt2x00dev->rf2,
- rt2x00dev->rf3, rt2x00dev->rf4);
+void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
+{
+ if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+ return;
- rt2x00dev->rx_status.freq = freq;
- rt2x00dev->rx_status.channel = channel;
+ queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->beacon_work);
}
+EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
-void rt2x00lib_config_promisc(struct rt2x00_dev *rt2x00dev, const int promisc)
+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);
+
/*
- * Monitor mode implies promisc mode enabled.
- * In all other instances, check if we need to toggle promisc mode.
+ * Update TX statistics.
*/
- if (is_monitor_present(&rt2x00dev->interface) &&
- !test_bit(INTERFACE_ENABLED_PROMISC, &rt2x00dev->flags)) {
- rt2x00dev->ops->lib->config_promisc(rt2x00dev, 1);
- __set_bit(INTERFACE_ENABLED_PROMISC, &rt2x00dev->flags);
+ 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++;
}
- if (test_bit(INTERFACE_ENABLED_PROMISC, &rt2x00dev->flags) != promisc) {
- rt2x00dev->ops->lib->config_promisc(rt2x00dev, promisc);
- __change_bit(INTERFACE_ENABLED_PROMISC, &rt2x00dev->flags);
+ 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_config_txpower(struct rt2x00_dev *rt2x00dev, const int txpower)
+void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
+ struct rxdata_entry_desc *desc)
{
- if (txpower == rt2x00dev->tx_power)
- return;
+ 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;
+ }
+ }
- rt2x00dev->ops->lib->config_txpower(rt2x00dev, txpower);
+ 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;
- rt2x00dev->tx_power = txpower;
+ /*
+ * Send frame to mac80211
+ */
+ ieee80211_rx_irqsafe(rt2x00dev->hw, skb, rx_status);
}
+EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
-void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
- const int antenna_tx, const int antenna_rx)
+/*
+ * 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)
{
- if (rt2x00dev->rx_status.antenna == antenna_rx)
- return;
+ 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;
- rt2x00dev->ops->lib->config_antenna(rt2x00dev, antenna_tx, antenna_rx);
+ /*
+ * 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->rx_status.antenna = antenna_rx;
+ 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)
+ const int channel, const int tx_power,
+ const int value)
{
entry->chan = channel;
if (channel <= 14)
entry->freq = 5000 + (5 * channel);
entry->val = value;
entry->flag =
- IEEE80211_CHAN_W_IBSS |
- IEEE80211_CHAN_W_ACTIVE_SCAN |
- IEEE80211_CHAN_W_SCAN;
+ 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)
+ 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);
+ 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->min_rssi_ack_delta = 0;
}
-static int rt2x00lib_init_hw_modes(struct rt2x00_dev *rt2x00dev,
- struct hw_mode_spec *spec)
+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;
/*
* Initialize Rate list.
*/
- rt2x00lib_rate(&rates[0], 10, 0x001, 0x00, IEEE80211_RATE_CCK);
- rt2x00lib_rate(&rates[1], 20, 0x003, 0x01, IEEE80211_RATE_CCK_2);
- rt2x00lib_rate(&rates[2], 55, 0x007, 0x02, IEEE80211_RATE_CCK_2);
- rt2x00lib_rate(&rates[3], 110, 0x00f, 0x03, IEEE80211_RATE_CCK_2);
+ 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, 0x01f, 0x0b, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[5], 90, 0x03f, 0x0f, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[6], 120, 0x07f, 0x0a, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[7], 180, 0x0ff, 0x0e, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[8], 240, 0x1ff, 0x09, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[9], 360, 0x3ff, 0x0d, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[10], 480, 0x7ff, 0x08, IEEE80211_RATE_OFDM);
- rt2x00lib_rate(&rates[11], 540, 0xfff, 0x0c, IEEE80211_RATE_OFDM);
+ 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 < 14; i++)
- rt2x00lib_channel(&channels[i], i + 1,
- spec->tx_power_bg[i], spec->chan_val_bg[i]);
-
- if (spec->num_channels > 14) {
- for (i = 14; i < spec->num_channels; i++) {
- if (i < 22)
- channels[i].chan = 36;
- else if (i < 33)
- channels[i].chan = 100;
- else
- channels[i].chan = 149;
- channels[i].chan += ((i - 14) * 4);
-
- if (spec->tx_power_a)
- tx_power = spec->tx_power_a[i];
- else
- tx_power = spec->tx_power_default;
-
- rt2x00lib_channel(&channels[i],
- channels[i].chan, tx_power,
- spec->chan_val_a[i]);
- }
+ 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);
}
/*
return -ENOMEM;
}
-static void rt2x00lib_deinit_hw(struct rt2x00_dev *rt2x00dev)
+static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
{
- if (test_bit(DEVICE_INITIALIZED_HW, &rt2x00dev->flags))
+ if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags))
ieee80211_unregister_hw(rt2x00dev->hw);
if (likely(rt2x00dev->hwmodes)) {
}
}
-static int rt2x00lib_init_hw(struct rt2x00_dev *rt2x00dev)
+static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
{
struct hw_mode_spec *spec = &rt2x00dev->spec;
int status;
/*
- * Initialize device.
+ * Initialize HW modes.
*/
- SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->device);
+ status = rt2x00lib_probe_hw_modes(rt2x00dev, spec);
+ if (status)
+ return status;
/*
- * Initialize MAC address.
- */
- if (!is_valid_ether_addr(spec->mac_addr)) {
- ERROR(rt2x00dev, "Invalid MAC addr: " MAC_FMT ".\n",
- MAC_ARG(spec->mac_addr));
- return -EINVAL;
- }
-
- rt2x00dev->ops->lib->config_mac_addr(rt2x00dev, spec->mac_addr);
- SET_IEEE80211_PERM_ADDR(rt2x00dev->hw, spec->mac_addr);
-
- /*
- * Initialize HW modes.
- */
- status = rt2x00lib_init_hw_modes(rt2x00dev, spec);
- if (status)
- return status;
-
- /*
- * Register HW.
+ * Register HW.
*/
status = ieee80211_register_hw(rt2x00dev->hw);
if (status) {
- rt2x00lib_deinit_hw(rt2x00dev);
+ rt2x00lib_remove_hw(rt2x00dev);
return status;
}
- __set_bit(DEVICE_INITIALIZED_HW, &rt2x00dev->flags);
+ __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags);
return 0;
}
/*
* Initialization/uninitialization handlers.
*/
-static int rt2x00lib_alloc_ring(struct data_ring *ring,
- const u16 max_entries, const u16 data_size, const u16 desc_size)
+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;
return 0;
}
-static int rt2x00lib_allocate_rings(struct rt2x00_dev *rt2x00dev)
+static int rt2x00lib_alloc_ring_entries(struct rt2x00_dev *rt2x00dev)
{
struct data_ring *ring;
/*
* Allocate the RX ring.
*/
- if (rt2x00lib_alloc_ring(rt2x00dev->rx,
- RX_ENTRIES, DATA_FRAME_SIZE, rt2x00dev->ops->rxd_size))
+ 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_ring(ring,
- TX_ENTRIES, DATA_FRAME_SIZE, rt2x00dev->ops->txd_size))
+ 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_ring(&rt2x00dev->bcn[0],
- BEACON_ENTRIES, MGMT_FRAME_SIZE, rt2x00dev->ops->txd_size))
+ if (rt2x00lib_alloc_entries(&rt2x00dev->bcn[0], BEACON_ENTRIES,
+ MGMT_FRAME_SIZE, rt2x00dev->ops->txd_size))
return -ENOMEM;
/*
* Allocate the Atim ring.
*/
- if (test_bit(DEVICE_SUPPORT_ATIM, &rt2x00dev->flags)) {
- if (rt2x00lib_alloc_ring(&rt2x00dev->bcn[1],
- ATIM_ENTRIES, DATA_FRAME_SIZE, rt2x00dev->ops->txd_size))
- return -ENOMEM;
- }
+ if (rt2x00lib_alloc_entries(&rt2x00dev->bcn[1], ATIM_ENTRIES,
+ DATA_FRAME_SIZE, rt2x00dev->ops->txd_size))
+ return -ENOMEM;
return 0;
}
-static void rt2x00lib_free_rings(struct rt2x00_dev *rt2x00dev)
+static void rt2x00lib_free_ring_entries(struct rt2x00_dev *rt2x00dev)
{
struct data_ring *ring;
}
}
+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;
return 0;
/*
- * Allocate all data rings.
+ * Allocate all ring entries.
*/
- status = rt2x00lib_allocate_rings(rt2x00dev);
+ status = rt2x00lib_alloc_ring_entries(rt2x00dev);
if (status) {
- ERROR(rt2x00dev, "DMA allocation failed.\n");
+ ERROR(rt2x00dev, "Ring entries allocation failed.\n");
return status;
}
/*
* Register the rfkill handler.
*/
- status = rt2x00lib_register_rfkill(rt2x00dev);
+ status = rt2x00rfkill_register(rt2x00dev);
if (status)
goto exit_unitialize;
rt2x00lib_uninitialize(rt2x00dev);
exit:
- rt2x00lib_free_rings(rt2x00dev);
+ rt2x00lib_free_ring_entries(rt2x00dev);
return status;
}
-void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
-{
- if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
- return;
-
- /*
- * Flush out all pending work.
- */
- flush_workqueue(rt2x00dev->workqueue);
-
- /*
- * Unregister rfkill.
- */
- rt2x00lib_unregister_rfkill(rt2x00dev);
-
- /*
- * Allow the HW to uninitialize.
- */
- rt2x00dev->ops->lib->uninitialize(rt2x00dev);
-
- /*
- * Free allocated datarings.
- */
- rt2x00lib_free_rings(rt2x00dev);
-}
-
/*
* driver allocation handlers.
*/
static int rt2x00lib_alloc_rings(struct rt2x00_dev *rt2x00dev)
{
struct data_ring *ring;
- unsigned int ring_num;
/*
* We need the following rings:
* RX: 1
* TX: hw->queues
- * Beacon: 1
- * Atim: 1 (if supported)
+ * Beacon: 1 (if required)
+ * Atim: 1 (if required)
*/
- ring_num = 2 + rt2x00dev->hw->queues +
- test_bit(DEVICE_SUPPORT_ATIM, &rt2x00dev->flags);
+ rt2x00dev->data_rings = 1 + rt2x00dev->hw->queues +
+ (2 * test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags));
- ring = kzalloc(sizeof(*ring) * ring_num, GFP_KERNEL);
+ ring = kzalloc(rt2x00dev->data_rings * sizeof(*ring), GFP_KERNEL);
if (!ring) {
ERROR(rt2x00dev, "Ring allocation failed.\n");
return -ENOMEM;
/*
* Initialize pointers
*/
- rt2x00dev->rx = &ring[0];
- rt2x00dev->tx = &ring[1];
- rt2x00dev->bcn = &ring[1 + rt2x00dev->hw->queues];
+ 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.
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;
- /*
- * Create workqueue.
- */
- rt2x00dev->workqueue = create_singlethread_workqueue(DRV_NAME);
- if (!rt2x00dev->workqueue)
- goto exit;
-
/*
* Let the driver probe the device to detect the capabilities.
*/
- retval = rt2x00dev->ops->lib->init_hw(rt2x00dev);
+ 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 = -EINVAL;
+ rt2x00dev->interface.type = INVALID_INTERFACE;
/*
* Allocate ring array.
/*
* Initialize ieee80211 structure.
*/
- retval = rt2x00lib_init_hw(rt2x00dev);
+ retval = rt2x00lib_probe_hw(rt2x00dev);
if (retval) {
ERROR(rt2x00dev, "Failed to initialize hw.\n");
goto exit;
/*
* Allocatie rfkill.
*/
- retval = rt2x00lib_allocate_rfkill(rt2x00dev);
+ retval = rt2x00rfkill_allocate(rt2x00dev);
if (retval)
goto exit;
*/
rt2x00debug_register(rt2x00dev);
- /*
- * Check if we need to load the firmware.
- */
- if (test_bit(FIRMWARE_REQUIRED, &rt2x00dev->flags)) {
- /*
- * Request firmware and wait with further
- * initializing of the card until the firmware
- * has been loaded.
- */
- retval = rt2x00lib_load_firmware(rt2x00dev);
- if (retval)
- goto exit;
- }
+ __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
return 0;
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
{
+ __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
+
/*
* Disable radio.
*/
/*
* Free rfkill
*/
- rt2x00lib_free_rfkill(rt2x00dev);
+ rt2x00rfkill_free(rt2x00dev);
/*
* Free ieee80211_hw memory.
*/
- rt2x00lib_deinit_hw(rt2x00dev);
+ rt2x00lib_remove_hw(rt2x00dev);
/*
- * Free workqueue.
+ * Free firmware image.
*/
- if (likely(rt2x00dev->workqueue)) {
- destroy_workqueue(rt2x00dev->workqueue);
- rt2x00dev->workqueue = NULL;
- }
+ rt2x00lib_free_firmware(rt2x00dev);
/*
* Free ring structures.
*/
- kfree(rt2x00dev->rx);
- rt2x00dev->rx = NULL;
- rt2x00dev->tx = NULL;
- rt2x00dev->bcn = NULL;
-
- /*
- * Free EEPROM memory.
- */
- kfree(rt2x00dev->eeprom);
- rt2x00dev->eeprom = NULL;
+ rt2x00lib_free_rings(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
/*
* Device state handlers
*/
-int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev,
- pm_message_t state)
+#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);
- rt2x00lib_disable_radio(rt2x00dev);
+ /*
+ * 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.
*/
if (retval)
return retval;
- rt2x00lib_remove_dev(rt2x00dev);
-
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");
-
- retval = rt2x00lib_probe_dev(rt2x00dev);
- if (retval) {
- ERROR(rt2x00dev, "Failed to allocate device.\n");
- return retval;
- }
-
- /*
- * Set device mode to awake for power management.
- */
- retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE);
- if (retval)
- return retval;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_resume);
-
-/*
- * Interrupt context handlers.
- */
-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;
-
- /*
- * 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;
-
- if (!(tx_status->control.flags & IEEE80211_TXCTL_NO_ACK)) {
- if (status == TX_SUCCESS || status == TX_SUCCESS_RETRY)
- 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 (status == TX_SUCCESS || status == TX_SUCCESS_RETRY)
- 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, char *data,
- const int size, const int signal, const int rssi, const int ofdm)
-{
- 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;
- struct sk_buff *skb;
- 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 (!ofdm)
- val = DEVICE_GET_RATE_FIELD(rate->val, RATE);
- else
- val = DEVICE_GET_RATE_FIELD(rate->val, PLCP);
-
- if (val == signal) {
- /*
- * Check for preamble bit.
- */
- if (signal & 0x08)
- val = rate->val2;
- val = rate->val;
- break;
- }
- }
-
- rx_status->rate = val;
- rx_status->ssi = rssi;
- rx_status->noise = rt2x00dev->link.curr_noise;
- rt2x00_update_link_rssi(&rt2x00dev->link, rssi);
-
- /*
- * Let's allocate a sk_buff where we can store the received data in,
- * note that if data is NULL, we still have to allocate a sk_buff
- * but that we should use that to replace the sk_buff which is already
- * inside the entry.
- */
- skb = dev_alloc_skb(size + NET_IP_ALIGN);
- if (!skb)
- return;
-
- skb_reserve(skb, NET_IP_ALIGN);
- skb_put(skb, size);
-
- if (data) {
- memcpy(skb->data, data, size);
- entry->skb = skb;
- skb = NULL;
- }
-
- ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status);
- entry->skb = skb;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
-
-/*
- * TX descriptor initializer
- */
-void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
- struct data_entry *entry, struct data_desc *txd,
- struct ieee80211_hdr *ieee80211hdr, unsigned int length,
- struct ieee80211_tx_control *control)
-{
- struct data_entry_desc desc;
- int tx_rate;
- int bitrate;
- int duration;
- int residual;
- u16 frame_control;
- u16 seq_ctrl;
+ __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
- * Identify queue
- */
- if (control->queue < rt2x00dev->hw->queues)
- desc.queue = control->queue;
- else
- desc.queue = 15;
-
- /*
- * 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 frame
- */
- if (is_rts_frame(frame_control)) {
- __set_bit(ENTRY_TXD_RTS_FRAME, &entry->flags);
- if (control->rts_cts_rate)
- tx_rate = control->rts_cts_rate;
- }
-
- /*
- * Check for OFDM
+ * Open the debugfs entry.
*/
- if (DEVICE_GET_RATE_FIELD(tx_rate, RATEMASK) & DEV_OFDM_RATE)
- __set_bit(ENTRY_TXD_OFDM_RATE, &entry->flags);
+ rt2x00debug_register(rt2x00dev);
/*
- * Check if more fragments are pending
+ * Only continue if mac80211 had open interfaces.
*/
- if (ieee80211_get_morefrag(ieee80211hdr))
- __set_bit(ENTRY_TXD_MORE_FRAG, &entry->flags);
+ if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags))
+ return 0;
/*
- * Check if this is a new sequence
+ * Reinitialize device and all active interfaces.
*/
- if ((seq_ctrl & IEEE80211_SCTL_FRAG) == 0)
- __set_bit(ENTRY_TXD_NEW_SEQ, &entry->flags);
+ retval = rt2x00mac_start(rt2x00dev->hw);
+ if (retval)
+ goto exit;
/*
- * Beacons and probe responses require the tsf timestamp
- * to be inserted into the frame.
+ * Reconfigure device.
*/
- if (control->queue == IEEE80211_TX_QUEUE_BEACON ||
- is_probe_resp(frame_control))
- __set_bit(ENTRY_TXD_REQ_TIMESTAMP, &entry->flags);
+ rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1);
+ if (!rt2x00dev->hw->conf.radio_enabled)
+ rt2x00lib_disable_radio(rt2x00dev);
- /*
- * Check if ACK is required
- */
- if (!(control->flags & IEEE80211_TXCTL_NO_ACK))
- __set_bit(ENTRY_TXD_REQ_ACK, &entry->flags);
+ rt2x00lib_config_mac_addr(rt2x00dev, intf->mac);
+ rt2x00lib_config_bssid(rt2x00dev, intf->bssid);
+ rt2x00lib_config_type(rt2x00dev, intf->type);
/*
- * 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.
+ * 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
*/
- if ((seq_ctrl & IEEE80211_SCTL_FRAG) > 0 ||
- test_bit(ENTRY_TXD_RTS_FRAME, &entry->flags))
- desc.ifs = IFS_SIFS;
- else
- desc.ifs = IFS_BACKOFF;
+ ieee80211_start_queues(rt2x00dev->hw);
/*
- * How the length should be processed depends
- * on if we are working with OFDM rates or not.
+ * When in Master or Ad-hoc mode,
+ * restart Beacon transmitting by faking a beacondone event.
*/
- if (test_bit(ENTRY_TXD_OFDM_RATE, &entry->flags)) {
- residual = 0;
- 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 (intf->type == IEEE80211_IF_TYPE_AP ||
+ intf->type == IEEE80211_IF_TYPE_IBSS)
+ rt2x00lib_beacondone(rt2x00dev);
- if (residual != 0)
- duration++;
-
- desc.length_high = duration >> 8;
- desc.length_low = duration & 0xff;
- }
-
- /*
- * Create the signal and service values.
- */
- desc.signal = DEVICE_GET_RATE_FIELD(tx_rate, PLCP);
- if (DEVICE_GET_RATE_FIELD(tx_rate, PREAMBLE))
- desc.signal |= 0x08;
+ return 0;
- desc.service = 0x04;
- if (residual <= (8 % 11))
- desc.service |= 0x80;
+exit:
+ rt2x00lib_disable_radio(rt2x00dev);
+ rt2x00lib_uninitialize(rt2x00dev);
+ rt2x00debug_deregister(rt2x00dev);
- rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, entry, txd, &desc,
- ieee80211hdr, length, control);
+ return retval;
}
-EXPORT_SYMBOL_GPL(rt2x00lib_write_tx_desc);
+EXPORT_SYMBOL_GPL(rt2x00lib_resume);
+#endif /* CONFIG_PM */
/*
* rt2x00lib module information.
projects / openwrt.git / blobdiff