| /* |
| Copyright (C) 2004 - 2008 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: rt2x00 |
| Abstract: rt2x00 global information. |
| */ |
| |
| #ifndef RT2X00_H |
| #define RT2X00_H |
| |
| #include <linux/bitops.h> |
| #include <linux/skbuff.h> |
| #include <linux/workqueue.h> |
| #include <linux/firmware.h> |
| #include <linux/leds.h> |
| #include <linux/mutex.h> |
| #include <linux/etherdevice.h> |
| |
| #include <net/mac80211.h> |
| |
| #include "rt2x00debug.h" |
| #include "rt2x00leds.h" |
| #include "rt2x00reg.h" |
| #include "rt2x00queue.h" |
| |
| /* |
| * Module information. |
| */ |
| #define DRV_VERSION "2.1.8" |
| #define DRV_PROJECT "http://rt2x00.serialmonkey.com" |
| |
| /* |
| * Debug definitions. |
| * Debug output has to be enabled during compile time. |
| */ |
| #define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \ |
| printk(__kernlvl "%s -> %s: %s - " __msg, \ |
| wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args) |
| |
| #define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \ |
| printk(__kernlvl "%s -> %s: %s - " __msg, \ |
| KBUILD_MODNAME, __FUNCTION__, __lvl, ##__args) |
| |
| #ifdef CONFIG_RT2X00_DEBUG |
| #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \ |
| DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args); |
| #else |
| #define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \ |
| do { } while (0) |
| #endif /* CONFIG_RT2X00_DEBUG */ |
| |
| /* |
| * Various debug levels. |
| * The debug levels PANIC and ERROR both indicate serious problems, |
| * for this reason they should never be ignored. |
| * The special ERROR_PROBE message is for messages that are generated |
| * when the rt2x00_dev is not yet initialized. |
| */ |
| #define PANIC(__dev, __msg, __args...) \ |
| DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args) |
| #define ERROR(__dev, __msg, __args...) \ |
| DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args) |
| #define ERROR_PROBE(__msg, __args...) \ |
| DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args) |
| #define WARNING(__dev, __msg, __args...) \ |
| DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args) |
| #define NOTICE(__dev, __msg, __args...) \ |
| DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args) |
| #define INFO(__dev, __msg, __args...) \ |
| DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args) |
| #define DEBUG(__dev, __msg, __args...) \ |
| DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args) |
| #define EEPROM(__dev, __msg, __args...) \ |
| DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args) |
| |
| /* |
| * Standard timing and size defines. |
| * These values should follow the ieee80211 specifications. |
| */ |
| #define ACK_SIZE 14 |
| #define IEEE80211_HEADER 24 |
| #define PLCP 48 |
| #define BEACON 100 |
| #define PREAMBLE 144 |
| #define SHORT_PREAMBLE 72 |
| #define SLOT_TIME 20 |
| #define SHORT_SLOT_TIME 9 |
| #define SIFS 10 |
| #define PIFS ( SIFS + SLOT_TIME ) |
| #define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME ) |
| #define DIFS ( PIFS + SLOT_TIME ) |
| #define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME ) |
| #define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) ) |
| |
| /* |
| * Chipset identification |
| * The chipset on the device is composed of a RT and RF chip. |
| * The chipset combination is important for determining device capabilities. |
| */ |
| struct rt2x00_chip { |
| u16 rt; |
| #define RT2460 0x0101 |
| #define RT2560 0x0201 |
| #define RT2570 0x1201 |
| #define RT2561s 0x0301 /* Turbo */ |
| #define RT2561 0x0302 |
| #define RT2661 0x0401 |
| #define RT2571 0x1300 |
| |
| u16 rf; |
| u32 rev; |
| }; |
| |
| /* |
| * RF register values that belong to a particular channel. |
| */ |
| struct rf_channel { |
| int channel; |
| u32 rf1; |
| u32 rf2; |
| u32 rf3; |
| u32 rf4; |
| }; |
| |
| /* |
| * Antenna setup values. |
| */ |
| struct antenna_setup { |
| enum antenna rx; |
| enum antenna tx; |
| }; |
| |
| /* |
| * Quality statistics about the currently active link. |
| */ |
| struct link_qual { |
| /* |
| * Statistics required for Link tuning. |
| * For the average RSSI value we use the "Walking average" approach. |
| * When adding RSSI to the average value the following calculation |
| * is needed: |
| * |
| * avg_rssi = ((avg_rssi * 7) + rssi) / 8; |
| * |
| * The advantage of this approach is that we only need 1 variable |
| * to store the average in (No need for a count and a total). |
| * But more importantly, normal average values will over time |
| * move less and less towards newly added values this results |
| * that with link tuning, the device can have a very good RSSI |
| * for a few minutes but when the device is moved away from the AP |
| * the average will not decrease fast enough to compensate. |
| * The walking average compensates this and will move towards |
| * the new values correctly allowing a effective link tuning. |
| */ |
| int avg_rssi; |
| int false_cca; |
| |
| /* |
| * Statistics required for Signal quality calculation. |
| * For calculating the Signal quality we have to determine |
| * the total number of success and failed RX and TX frames. |
| * After that we also use the average RSSI value to help |
| * determining the signal quality. |
| * For the calculation we will use the following algorithm: |
| * |
| * rssi_percentage = (avg_rssi * 100) / rssi_offset |
| * rx_percentage = (rx_success * 100) / rx_total |
| * tx_percentage = (tx_success * 100) / tx_total |
| * avg_signal = ((WEIGHT_RSSI * avg_rssi) + |
| * (WEIGHT_TX * tx_percentage) + |
| * (WEIGHT_RX * rx_percentage)) / 100 |
| * |
| * This value should then be checked to not be greated then 100. |
| */ |
| int rx_percentage; |
| int rx_success; |
| int rx_failed; |
| int tx_percentage; |
| int tx_success; |
| int tx_failed; |
| #define WEIGHT_RSSI 20 |
| #define WEIGHT_RX 40 |
| #define WEIGHT_TX 40 |
| }; |
| |
| /* |
| * Antenna settings about the currently active link. |
| */ |
| struct link_ant { |
| /* |
| * Antenna flags |
| */ |
| unsigned int flags; |
| #define ANTENNA_RX_DIVERSITY 0x00000001 |
| #define ANTENNA_TX_DIVERSITY 0x00000002 |
| #define ANTENNA_MODE_SAMPLE 0x00000004 |
| |
| /* |
| * Currently active TX/RX antenna setup. |
| * When software diversity is used, this will indicate |
| * which antenna is actually used at this time. |
| */ |
| struct antenna_setup active; |
| |
| /* |
| * RSSI information for the different antenna's. |
| * These statistics are used to determine when |
| * to switch antenna when using software diversity. |
| * |
| * rssi[0] -> Antenna A RSSI |
| * rssi[1] -> Antenna B RSSI |
| */ |
| int rssi_history[2]; |
| |
| /* |
| * Current RSSI average of the currently active antenna. |
| * Similar to the avg_rssi in the link_qual structure |
| * this value is updated by using the walking average. |
| */ |
| int rssi_ant; |
| }; |
| |
| /* |
| * To optimize the quality of the link we need to store |
| * the quality of received frames and periodically |
| * optimize the link. |
| */ |
| struct link { |
| /* |
| * Link tuner counter |
| * The number of times the link has been tuned |
| * since the radio has been switched on. |
| */ |
| u32 count; |
| |
| /* |
| * Quality measurement values. |
| */ |
| struct link_qual qual; |
| |
| /* |
| * TX/RX antenna setup. |
| */ |
| struct link_ant ant; |
| |
| /* |
| * Active VGC level |
| */ |
| int vgc_level; |
| |
| /* |
| * Work structure for scheduling periodic link tuning. |
| */ |
| struct delayed_work work; |
| }; |
| |
| /* |
| * Small helper macro to work with moving/walking averages. |
| */ |
| #define MOVING_AVERAGE(__avg, __val, __samples) \ |
| ( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) ) |
| |
| /* |
| * When we lack RSSI information return something less then -80 to |
| * tell the driver to tune the device to maximum sensitivity. |
| */ |
| #define DEFAULT_RSSI ( -128 ) |
| |
| /* |
| * Link quality access functions. |
| */ |
| static inline int rt2x00_get_link_rssi(struct link *link) |
| { |
| if (link->qual.avg_rssi && link->qual.rx_success) |
| return link->qual.avg_rssi; |
| return DEFAULT_RSSI; |
| } |
| |
| static inline int rt2x00_get_link_ant_rssi(struct link *link) |
| { |
| if (link->ant.rssi_ant && link->qual.rx_success) |
| return link->ant.rssi_ant; |
| return DEFAULT_RSSI; |
| } |
| |
| static inline void rt2x00_reset_link_ant_rssi(struct link *link) |
| { |
| link->ant.rssi_ant = 0; |
| } |
| |
| static inline int rt2x00_get_link_ant_rssi_history(struct link *link, |
| enum antenna ant) |
| { |
| if (link->ant.rssi_history[ant - ANTENNA_A]) |
| return link->ant.rssi_history[ant - ANTENNA_A]; |
| return DEFAULT_RSSI; |
| } |
| |
| static inline int rt2x00_update_ant_rssi(struct link *link, int rssi) |
| { |
| int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A]; |
| link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi; |
| return old_rssi; |
| } |
| |
| /* |
| * Interface structure |
| * Per interface configuration details, this structure |
| * is allocated as the private data for ieee80211_vif. |
| */ |
| struct rt2x00_intf { |
| /* |
| * All fields within the rt2x00_intf structure |
| * must be protected with a spinlock. |
| */ |
| spinlock_t lock; |
| |
| /* |
| * BSS configuration. Copied from the structure |
| * passed to us through the bss_info_changed() |
| * callback funtion. |
| */ |
| struct ieee80211_bss_conf conf; |
| |
| /* |
| * MAC of the device. |
| */ |
| u8 mac[ETH_ALEN]; |
| |
| /* |
| * BBSID of the AP to associate with. |
| */ |
| u8 bssid[ETH_ALEN]; |
| |
| /* |
| * Entry in the beacon queue which belongs to |
| * this interface. Each interface has its own |
| * dedicated beacon entry. |
| */ |
| struct queue_entry *beacon; |
| |
| /* |
| * Actions that needed rescheduling. |
| */ |
| unsigned int delayed_flags; |
| #define DELAYED_UPDATE_BEACON 0x00000001 |
| #define DELAYED_CONFIG_ERP 0x00000002 |
| #define DELAYED_LED_ASSOC 0x00000004 |
| |
| u16 seqno; |
| }; |
| |
| static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif) |
| { |
| return (struct rt2x00_intf *)vif->drv_priv; |
| } |
| |
| /** |
| * struct hw_mode_spec: Hardware specifications structure |
| * |
| * Details about the supported modes, rates and channels |
| * of a particular chipset. This is used by rt2x00lib |
| * to build the ieee80211_hw_mode array for mac80211. |
| * |
| * @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz). |
| * @supported_rates: Rate types which are supported (CCK, OFDM). |
| * @num_channels: Number of supported channels. This is used as array size |
| * for @tx_power_a, @tx_power_bg and @channels. |
| * @channels: Device/chipset specific channel values (See &struct rf_channel). |
| * @tx_power_a: TX power values for all 5.2GHz channels (may be NULL). |
| * @tx_power_bg: TX power values for all 2.4GHz channels (may be NULL). |
| * @tx_power_default: Default TX power value to use when either |
| * @tx_power_a or @tx_power_bg is missing. |
| */ |
| struct hw_mode_spec { |
| unsigned int supported_bands; |
| #define SUPPORT_BAND_2GHZ 0x00000001 |
| #define SUPPORT_BAND_5GHZ 0x00000002 |
| |
| unsigned int supported_rates; |
| #define SUPPORT_RATE_CCK 0x00000001 |
| #define SUPPORT_RATE_OFDM 0x00000002 |
| |
| unsigned int num_channels; |
| const struct rf_channel *channels; |
| |
| const u8 *tx_power_a; |
| const u8 *tx_power_bg; |
| u8 tx_power_default; |
| }; |
| |
| /* |
| * Configuration structure wrapper around the |
| * mac80211 configuration structure. |
| * When mac80211 configures the driver, rt2x00lib |
| * can precalculate values which are equal for all |
| * rt2x00 drivers. Those values can be stored in here. |
| */ |
| struct rt2x00lib_conf { |
| struct ieee80211_conf *conf; |
| struct rf_channel rf; |
| |
| struct antenna_setup ant; |
| |
| enum ieee80211_band band; |
| |
| u32 basic_rates; |
| u32 slot_time; |
| |
| short sifs; |
| short pifs; |
| short difs; |
| short eifs; |
| }; |
| |
| /* |
| * Configuration structure for erp settings. |
| */ |
| struct rt2x00lib_erp { |
| int short_preamble; |
| int cts_protection; |
| |
| int ack_timeout; |
| int ack_consume_time; |
| }; |
| |
| /* |
| * Configuration structure wrapper around the |
| * rt2x00 interface configuration handler. |
| */ |
| struct rt2x00intf_conf { |
| /* |
| * Interface type |
| */ |
| enum ieee80211_if_types type; |
| |
| /* |
| * TSF sync value, this is dependant on the operation type. |
| */ |
| enum tsf_sync sync; |
| |
| /* |
| * The MAC and BSSID addressess are simple array of bytes, |
| * these arrays are little endian, so when sending the addressess |
| * to the drivers, copy the it into a endian-signed variable. |
| * |
| * Note that all devices (except rt2500usb) have 32 bits |
| * register word sizes. This means that whatever variable we |
| * pass _must_ be a multiple of 32 bits. Otherwise the device |
| * might not accept what we are sending to it. |
| * This will also make it easier for the driver to write |
| * the data to the device. |
| */ |
| __le32 mac[2]; |
| __le32 bssid[2]; |
| }; |
| |
| /* |
| * rt2x00lib callback functions. |
| */ |
| struct rt2x00lib_ops { |
| /* |
| * Interrupt handlers. |
| */ |
| irq_handler_t irq_handler; |
| |
| /* |
| * Device init handlers. |
| */ |
| int (*probe_hw) (struct rt2x00_dev *rt2x00dev); |
| char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev); |
| u16 (*get_firmware_crc) (const void *data, const size_t len); |
| int (*load_firmware) (struct rt2x00_dev *rt2x00dev, const void *data, |
| const size_t len); |
| |
| /* |
| * Device initialization/deinitialization handlers. |
| */ |
| int (*initialize) (struct rt2x00_dev *rt2x00dev); |
| void (*uninitialize) (struct rt2x00_dev *rt2x00dev); |
| |
| /* |
| * queue initialization handlers |
| */ |
| void (*init_rxentry) (struct rt2x00_dev *rt2x00dev, |
| struct queue_entry *entry); |
| void (*init_txentry) (struct rt2x00_dev *rt2x00dev, |
| struct queue_entry *entry); |
| |
| /* |
| * Radio control handlers. |
| */ |
| int (*set_device_state) (struct rt2x00_dev *rt2x00dev, |
| enum dev_state state); |
| int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev); |
| void (*link_stats) (struct rt2x00_dev *rt2x00dev, |
| struct link_qual *qual); |
| void (*reset_tuner) (struct rt2x00_dev *rt2x00dev); |
| void (*link_tuner) (struct rt2x00_dev *rt2x00dev); |
| |
| /* |
| * TX control handlers |
| */ |
| void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev, |
| struct sk_buff *skb, |
| struct txentry_desc *txdesc); |
| int (*write_tx_data) (struct queue_entry *entry); |
| void (*write_beacon) (struct queue_entry *entry); |
| int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev, |
| struct sk_buff *skb); |
| void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev, |
| const enum data_queue_qid queue); |
| |
| /* |
| * RX control handlers |
| */ |
| void (*fill_rxdone) (struct queue_entry *entry, |
| struct rxdone_entry_desc *rxdesc); |
| |
| /* |
| * Configuration handlers. |
| */ |
| void (*config_filter) (struct rt2x00_dev *rt2x00dev, |
| const unsigned int filter_flags); |
| void (*config_intf) (struct rt2x00_dev *rt2x00dev, |
| struct rt2x00_intf *intf, |
| struct rt2x00intf_conf *conf, |
| const unsigned int flags); |
| #define CONFIG_UPDATE_TYPE ( 1 << 1 ) |
| #define CONFIG_UPDATE_MAC ( 1 << 2 ) |
| #define CONFIG_UPDATE_BSSID ( 1 << 3 ) |
| |
| void (*config_erp) (struct rt2x00_dev *rt2x00dev, |
| struct rt2x00lib_erp *erp); |
| void (*config) (struct rt2x00_dev *rt2x00dev, |
| struct rt2x00lib_conf *libconf, |
| const unsigned int flags); |
| #define CONFIG_UPDATE_PHYMODE ( 1 << 1 ) |
| #define CONFIG_UPDATE_CHANNEL ( 1 << 2 ) |
| #define CONFIG_UPDATE_TXPOWER ( 1 << 3 ) |
| #define CONFIG_UPDATE_ANTENNA ( 1 << 4 ) |
| #define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 ) |
| #define CONFIG_UPDATE_BEACON_INT ( 1 << 6 ) |
| #define CONFIG_UPDATE_ALL 0xffff |
| }; |
| |
| /* |
| * rt2x00 driver callback operation structure. |
| */ |
| struct rt2x00_ops { |
| const char *name; |
| const unsigned int max_sta_intf; |
| const unsigned int max_ap_intf; |
| const unsigned int eeprom_size; |
| const unsigned int rf_size; |
| const unsigned int tx_queues; |
| const struct data_queue_desc *rx; |
| const struct data_queue_desc *tx; |
| const struct data_queue_desc *bcn; |
| const struct data_queue_desc *atim; |
| const struct rt2x00lib_ops *lib; |
| const struct ieee80211_ops *hw; |
| #ifdef CONFIG_RT2X00_LIB_DEBUGFS |
| const struct rt2x00debug *debugfs; |
| #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |
| }; |
| |
| /* |
| * rt2x00 device flags |
| */ |
| enum rt2x00_flags { |
| /* |
| * Device state flags |
| */ |
| DEVICE_PRESENT, |
| DEVICE_REGISTERED_HW, |
| DEVICE_INITIALIZED, |
| DEVICE_STARTED, |
| DEVICE_STARTED_SUSPEND, |
| DEVICE_ENABLED_RADIO, |
| DEVICE_DISABLED_RADIO_HW, |
| |
| /* |
| * Driver features |
| */ |
| DRIVER_REQUIRE_FIRMWARE, |
| DRIVER_REQUIRE_BEACON_GUARD, |
| DRIVER_REQUIRE_ATIM_QUEUE, |
| DRIVER_REQUIRE_SCHEDULED, |
| DRIVER_REQUIRE_DMA, |
| |
| /* |
| * Driver configuration |
| */ |
| CONFIG_SUPPORT_HW_BUTTON, |
| CONFIG_FRAME_TYPE, |
| CONFIG_RF_SEQUENCE, |
| CONFIG_EXTERNAL_LNA_A, |
| CONFIG_EXTERNAL_LNA_BG, |
| CONFIG_DOUBLE_ANTENNA, |
| CONFIG_DISABLE_LINK_TUNING, |
| }; |
| |
| /* |
| * rt2x00 device structure. |
| */ |
| struct rt2x00_dev { |
| /* |
| * Device structure. |
| * The structure stored in here depends on the |
| * system bus (PCI or USB). |
| * When accessing this variable, the rt2x00dev_{pci,usb} |
| * macro's should be used for correct typecasting. |
| */ |
| struct device *dev; |
| |
| /* |
| * Callback functions. |
| */ |
| const struct rt2x00_ops *ops; |
| |
| /* |
| * IEEE80211 control structure. |
| */ |
| struct ieee80211_hw *hw; |
| struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS]; |
| enum ieee80211_band curr_band; |
| |
| /* |
| * rfkill structure for RF state switching support. |
| * This will only be compiled in when required. |
| */ |
| #ifdef CONFIG_RT2X00_LIB_RFKILL |
| unsigned long rfkill_state; |
| #define RFKILL_STATE_ALLOCATED 1 |
| #define RFKILL_STATE_REGISTERED 2 |
| struct rfkill *rfkill; |
| struct delayed_work rfkill_work; |
| #endif /* CONFIG_RT2X00_LIB_RFKILL */ |
| |
| /* |
| * If enabled, the debugfs interface structures |
| * required for deregistration of debugfs. |
| */ |
| #ifdef CONFIG_RT2X00_LIB_DEBUGFS |
| struct rt2x00debug_intf *debugfs_intf; |
| #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ |
| |
| /* |
| * LED structure for changing the LED status |
| * by mac8011 or the kernel. |
| */ |
| #ifdef CONFIG_RT2X00_LIB_LEDS |
| struct rt2x00_led led_radio; |
| struct rt2x00_led led_assoc; |
| struct rt2x00_led led_qual; |
| u16 led_mcu_reg; |
| #endif /* CONFIG_RT2X00_LIB_LEDS */ |
| |
| /* |
| * Device flags. |
| * In these flags the current status and some |
| * of the device capabilities are stored. |
| */ |
| unsigned long flags; |
| |
| /* |
| * Chipset identification. |
| */ |
| struct rt2x00_chip chip; |
| |
| /* |
| * hw capability specifications. |
| */ |
| struct hw_mode_spec spec; |
| |
| /* |
| * This is the default TX/RX antenna setup as indicated |
| * by the device's EEPROM. When mac80211 sets its |
| * antenna value to 0 we should be using these values. |
| */ |
| struct antenna_setup default_ant; |
| |
| /* |
| * Register pointers |
| * csr.base: CSR base register address. (PCI) |
| * csr.cache: CSR cache for usb_control_msg. (USB) |
| */ |
| union csr { |
| void __iomem *base; |
| void *cache; |
| } csr; |
| |
| /* |
| * Mutex to protect register accesses on USB devices. |
| * There are 2 reasons this is needed, one is to ensure |
| * use of the csr_cache (for USB devices) by one thread |
| * isn't corrupted by another thread trying to access it. |
| * The other is that access to BBP and RF registers |
| * require multiple BUS transactions and if another thread |
| * attempted to access one of those registers at the same |
| * time one of the writes could silently fail. |
| */ |
| struct mutex usb_cache_mutex; |
| |
| /* |
| * Current packet filter configuration for the device. |
| * This contains all currently active FIF_* flags send |
| * to us by mac80211 during configure_filter(). |
| */ |
| unsigned int packet_filter; |
| |
| /* |
| * Interface details: |
| * - Open ap interface count. |
| * - Open sta interface count. |
| * - Association count. |
| */ |
| unsigned int intf_ap_count; |
| unsigned int intf_sta_count; |
| unsigned int intf_associated; |
| |
| /* |
| * Link quality |
| */ |
| struct link link; |
| |
| /* |
| * EEPROM data. |
| */ |
| __le16 *eeprom; |
| |
| /* |
| * Active RF register values. |
| * These are stored here so we don't need |
| * to read the rf registers and can directly |
| * use this value instead. |
| * This field should be accessed by using |
| * rt2x00_rf_read() and rt2x00_rf_write(). |
| */ |
| u32 *rf; |
| |
| /* |
| * USB Max frame size (for rt2500usb & rt73usb). |
| */ |
| u16 usb_maxpacket; |
| |
| /* |
| * Current TX power value. |
| */ |
| u16 tx_power; |
| |
| /* |
| * Rssi <-> Dbm offset |
| */ |
| u8 rssi_offset; |
| |
| /* |
| * Frequency offset (for rt61pci & rt73usb). |
| */ |
| u8 freq_offset; |
| |
| /* |
| * Low level statistics which will have |
| * to be kept up to date while device is running. |
| */ |
| struct ieee80211_low_level_stats low_level_stats; |
| |
| /* |
| * RX configuration information. |
| */ |
| struct ieee80211_rx_status rx_status; |
| |
| /* |
| * Scheduled work. |
| * NOTE: intf_work will use ieee80211_iterate_active_interfaces() |
| * which means it cannot be placed on the hw->workqueue |
| * due to RTNL locking requirements. |
| */ |
| struct work_struct intf_work; |
| struct work_struct filter_work; |
| |
| /* |
| * Data queue arrays for RX, TX and Beacon. |
| * The Beacon array also contains the Atim queue |
| * if that is supported by the device. |
| */ |
| unsigned int data_queues; |
| struct data_queue *rx; |
| struct data_queue *tx; |
| struct data_queue *bcn; |
| |
| /* |
| * Firmware image. |
| */ |
| const struct firmware *fw; |
| }; |
| |
| /* |
| * Generic RF access. |
| * The RF is being accessed by word index. |
| */ |
| static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev, |
| const unsigned int word, u32 *data) |
| { |
| *data = rt2x00dev->rf[word]; |
| } |
| |
| static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev, |
| const unsigned int word, u32 data) |
| { |
| rt2x00dev->rf[word] = data; |
| } |
| |
| /* |
| * Generic EEPROM access. |
| * The EEPROM is being accessed by word index. |
| */ |
| static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev, |
| const unsigned int word) |
| { |
| return (void *)&rt2x00dev->eeprom[word]; |
| } |
| |
| static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev, |
| const unsigned int word, u16 *data) |
| { |
| *data = le16_to_cpu(rt2x00dev->eeprom[word]); |
| } |
| |
| static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev, |
| const unsigned int word, u16 data) |
| { |
| rt2x00dev->eeprom[word] = cpu_to_le16(data); |
| } |
| |
| /* |
| * Chipset handlers |
| */ |
| static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev, |
| const u16 rt, const u16 rf, const u32 rev) |
| { |
| INFO(rt2x00dev, |
| "Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n", |
| rt, rf, rev); |
| |
| rt2x00dev->chip.rt = rt; |
| rt2x00dev->chip.rf = rf; |
| rt2x00dev->chip.rev = rev; |
| } |
| |
| static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip) |
| { |
| return (chipset->rt == chip); |
| } |
| |
| static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip) |
| { |
| return (chipset->rf == chip); |
| } |
| |
| static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset) |
| { |
| return chipset->rev; |
| } |
| |
| static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset, |
| const u32 rev) |
| { |
| return (((chipset->rev & 0xffff0) == rev) && |
| !!(chipset->rev & 0x0000f)); |
| } |
| |
| /* |
| * Duration calculations |
| * The rate variable passed is: 100kbs. |
| * To convert from bytes to bits we multiply size with 8, |
| * then the size is multiplied with 10 to make the |
| * real rate -> rate argument correction. |
| */ |
| static inline u16 get_duration(const unsigned int size, const u8 rate) |
| { |
| return ((size * 8 * 10) / rate); |
| } |
| |
| static inline u16 get_duration_res(const unsigned int size, const u8 rate) |
| { |
| return ((size * 8 * 10) % rate); |
| } |
| |
| /** |
| * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes. |
| * @rt2x00dev: Pointer to &struct rt2x00_dev. |
| * @skb: The skb to map. |
| */ |
| void rt2x00queue_map_txskb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb); |
| |
| /** |
| * rt2x00queue_get_queue - Convert queue index to queue pointer |
| * @rt2x00dev: Pointer to &struct rt2x00_dev. |
| * @queue: rt2x00 queue index (see &enum data_queue_qid). |
| */ |
| struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev, |
| const enum data_queue_qid queue); |
| |
| /** |
| * rt2x00queue_get_entry - Get queue entry where the given index points to. |
| * @queue: Pointer to &struct data_queue from where we obtain the entry. |
| * @index: Index identifier for obtaining the correct index. |
| */ |
| struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue, |
| enum queue_index index); |
| |
| /* |
| * Interrupt context handlers. |
| */ |
| void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev); |
| void rt2x00lib_txdone(struct queue_entry *entry, |
| struct txdone_entry_desc *txdesc); |
| void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev, |
| struct queue_entry *entry); |
| |
| /* |
| * mac80211 handlers. |
| */ |
| int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb); |
| int rt2x00mac_start(struct ieee80211_hw *hw); |
| void rt2x00mac_stop(struct ieee80211_hw *hw); |
| int rt2x00mac_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_if_init_conf *conf); |
| void rt2x00mac_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_if_init_conf *conf); |
| int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
| int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_if_conf *conf); |
| void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
| unsigned int changed_flags, |
| unsigned int *total_flags, |
| int mc_count, struct dev_addr_list *mc_list); |
| int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats); |
| int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, |
| struct ieee80211_tx_queue_stats *stats); |
| void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss_conf, |
| u32 changes); |
| int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| const struct ieee80211_tx_queue_params *params); |
| |
| /* |
| * Driver allocation handlers. |
| */ |
| int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev); |
| void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev); |
| #ifdef CONFIG_PM |
| int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state); |
| int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev); |
| #endif /* CONFIG_PM */ |
| |
| #endif /* RT2X00_H */ |