[RT2x00]: add driver for Ralink wireless hardware

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 807 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
new file mode 100644
index 000000000000..80b079d723d6
--- /dev/null
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -0,0 +1,807 @@
+/*
+        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: rt2x00
+        Abstract: rt2x00 global information.
+ */
+
+#ifndef RT2X00_H
+#define RT2X00_H
+
+#include <linux/bitops.h>
+#include <linux/prefetch.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+#include <linux/firmware.h>
+
+#include <net/mac80211.h>
+
+#include "rt2x00debug.h"
+#include "rt2x00reg.h"
+#include "rt2x00ring.h"
+
+/*
+ * Module information.
+ * DRV_NAME should be set within the individual module source files.
+ */
+#define DRV_VERSION     "2.0.8"
+#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,               \
+               DRV_NAME, __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)
+
+/*
+ * Ring sizes.
+ * Ralink PCI devices demand the Frame size to be a multiple of 128 bytes.
+ * DATA_FRAME_SIZE is used for TX, RX, ATIM and PRIO rings.
+ * MGMT_FRAME_SIZE is used for the BEACON ring.
+ */
+#define DATA_FRAME_SIZE 2432
+#define MGMT_FRAME_SIZE 256
+
+/*
+ * Number of entries in a packet ring.
+ * PCI devices only need 1 Beacon entry,
+ * but USB devices require a second because they
+ * have to send a Guardian byte first.
+ */
+#define RX_ENTRIES      12
+#define TX_ENTRIES      12
+#define ATIM_ENTRIES    1
+#define BEACON_ENTRIES  2
+
+/*
+ * 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)) )
+
+/*
+ * IEEE802.11 header defines
+ */
+static inline int is_rts_frame(u16 fc)
+{
+        return !!(((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
+                  ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_RTS));
+}
+
+static inline int is_cts_frame(u16 fc)
+{
+        return !!(((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
+                  ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_CTS));
+}
+
+static inline int is_probe_resp(u16 fc)
+{
+        return !!(((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
+                  ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP));
+}
+
+/*
+ * 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 RT2561          0x0301
+#define RT2561s         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;
+};
+
+/*
+ * 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;
+
+        /*
+         * 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 vgc_level;
+        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
+
+        /*
+         * Work structure for scheduling periodic link tuning.
+         */
+        struct delayed_work work;
+};
+
+/*
+ * Clear all counters inside the link structure.
+ * This can be easiest achieved by memsetting everything
+ * except for the work structure at the end.
+ */
+static inline void rt2x00_clear_link(struct link *link)
+{
+        memset(link, 0x00, sizeof(*link) - sizeof(link->work));
+        link->rx_percentage = 50;
+        link->tx_percentage = 50;
+}
+
+/*
+ * Update the rssi using the walking average approach.
+ */
+static inline void rt2x00_update_link_rssi(struct link *link, int rssi)
+{
+        if (!link->avg_rssi)
+                link->avg_rssi = rssi;
+        else
+                link->avg_rssi = ((link->avg_rssi * 7) + rssi) / 8;
+}
+
+/*
+ * When the avg_rssi is unset or no frames  have been received),
+ * we need to return the default value which needs to be less
+ * than -80 so the device will select the maximum sensitivity.
+ */
+static inline int rt2x00_get_link_rssi(struct link *link)
+{
+        return (link->avg_rssi && link->rx_success) ? link->avg_rssi : -128;
+}
+
+/*
+ * Interface structure
+ * Configuration details about the current interface.
+ */
+struct interface {
+        /*
+         * Interface identification. The value is assigned
+         * to us by the 80211 stack, and is used to request
+         * new beacons.
+         */
+        int id;
+
+        /*
+         * Current working type (IEEE80211_IF_TYPE_*).
+         * This excludes the type IEEE80211_IF_TYPE_MNTR
+         * since that is counted seperately in the monitor_count
+         * field.
+         * When set to INVALID_INTERFACE, no interface is configured.
+         */
+        int type;
+#define INVALID_INTERFACE       IEEE80211_IF_TYPE_MGMT
+
+        /*
+         * MAC of the device.
+         */
+        u8 mac[ETH_ALEN];
+
+        /*
+         * BBSID of the AP to associate with.
+         */
+        u8 bssid[ETH_ALEN];
+
+        /*
+         * Store the packet filter mode for the current interface.
+         * monitor mode always disabled filtering. But in such
+         * cases we still need to store the value here in case
+         * the monitor mode interfaces are removed, while a
+         * non-monitor mode interface remains.
+         */
+        unsigned short filter;
+
+        /*
+         * Monitor mode count, the number of interfaces
+         * in monitor mode that that have been added.
+         */
+        unsigned short monitor_count;
+};
+
+static inline int is_interface_present(struct interface *intf)
+{
+        return !!intf->id;
+}
+
+static inline int is_monitor_present(struct interface *intf)
+{
+        return !!intf->monitor_count;
+}
+
+/*
+ * 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.
+ */
+struct hw_mode_spec {
+        /*
+         * Number of modes, rates and channels.
+         */
+        int num_modes;
+        int num_rates;
+        int num_channels;
+
+        /*
+         * txpower values.
+         */
+        const u8 *tx_power_a;
+        const u8 *tx_power_bg;
+        u8 tx_power_default;
+
+        /*
+         * Device/chipset specific value.
+         */
+        const struct rf_channel *channels;
+};
+
+/*
+ * 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);
+        int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data,
+                              const size_t len);
+
+        /*
+         * Device initialization/deinitialization handlers.
+         */
+        int (*initialize) (struct rt2x00_dev *rt2x00dev);
+        void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
+
+        /*
+         * 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);
+        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 data_desc *txd,
+                               struct data_entry_desc *desc,
+                               struct ieee80211_hdr *ieee80211hdr,
+                               unsigned int length,
+                               struct ieee80211_tx_control *control);
+        int (*write_tx_data) (struct rt2x00_dev *rt2x00dev,
+                              struct data_ring *ring, struct sk_buff *skb,
+                              struct ieee80211_tx_control *control);
+        void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
+                               unsigned int queue);
+
+        /*
+         * RX control handlers
+         */
+        int (*fill_rxdone) (struct data_entry *entry,
+                            int *signal, int *rssi, int *ofdm, int *size);
+
+        /*
+         * Configuration handlers.
+         */
+        void (*config_mac_addr) (struct rt2x00_dev *rt2x00dev, u8 *mac);
+        void (*config_bssid) (struct rt2x00_dev *rt2x00dev, u8 *bssid);
+        void (*config_packet_filter) (struct rt2x00_dev *rt2x00dev,
+                                      const unsigned int filter);
+        void (*config_type) (struct rt2x00_dev *rt2x00dev, const int type);
+        void (*config) (struct rt2x00_dev *rt2x00dev, const unsigned int flags,
+                        struct ieee80211_conf *conf);
+#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 rxd_size;
+        const unsigned int txd_size;
+        const unsigned int eeprom_size;
+        const unsigned int rf_size;
+        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 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.
+         */
+        void *dev;
+#define rt2x00dev_pci(__dev)    ( (struct pci_dev*)(__dev)->dev )
+#define rt2x00dev_usb(__dev)    ( (struct usb_interface*)(__dev)->dev )
+
+        /*
+         * Callback functions.
+         */
+        const struct rt2x00_ops *ops;
+
+        /*
+         * IEEE80211 control structure.
+         */
+        struct ieee80211_hw *hw;
+        struct ieee80211_hw_mode *hwmodes;
+        unsigned int curr_hwmode;
+#define HWMODE_B        0
+#define HWMODE_G        1
+#define HWMODE_A        2
+
+        /*
+         * rfkill structure for RF state switching support.
+         * This will only be compiled in when required.
+         */
+#ifdef CONFIG_RT2X00_LIB_RFKILL
+        struct rfkill *rfkill;
+        struct input_polled_dev *poll_dev;
+#endif /* CONFIG_RT2X00_LIB_RFKILL */
+
+        /*
+         * If enabled, the debugfs interface structures
+         * required for deregistration of debugfs.
+         */
+#ifdef CONFIG_RT2X00_LIB_DEBUGFS
+        const struct rt2x00debug_intf *debugfs_intf;
+#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
+
+        /*
+         * Device flags.
+         * In these flags the current status and some
+         * of the device capabilities are stored.
+         */
+        unsigned long flags;
+#define DEVICE_ENABLED_RADIO            1
+#define DEVICE_ENABLED_RADIO_HW         2
+#define DEVICE_INITIALIZED              3
+#define DEVICE_INITIALIZED_HW           4
+#define REQUIRE_FIRMWARE                5
+#define PACKET_FILTER_SCHEDULED         6
+#define PACKET_FILTER_PENDING           7
+#define INTERFACE_RESUME                8
+#define INTERFACE_ENABLED               9
+#define INTERFACE_ENABLED_MONITOR       10
+#define REQUIRE_BEACON_RING             11
+#define DEVICE_SUPPORT_HW_BUTTON        12
+#define CONFIG_FRAME_TYPE               13
+#define CONFIG_RF_SEQUENCE              14
+/* Hole: Add new Flag here */
+#define CONFIG_EXTERNAL_LNA_A           16
+#define CONFIG_EXTERNAL_LNA_BG          17
+#define CONFIG_DOUBLE_ANTENNA           18
+#define CONFIG_DISABLE_LINK_TUNING      19
+
+        /*
+         * Chipset identification.
+         */
+        struct rt2x00_chip chip;
+
+        /*
+         * hw capability specifications.
+         */
+        struct hw_mode_spec spec;
+
+        /*
+         * Register pointers
+         * csr_addr: Base register address. (PCI)
+         * csr_cache: CSR cache for usb_control_msg. (USB)
+         */
+        void __iomem *csr_addr;
+        void *csr_cache;
+
+        /*
+         * Interface configuration.
+         */
+        struct interface interface;
+
+        /*
+         * 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;
+
+        /*
+         * Current TX power value.
+         */
+        u16 tx_power;
+
+        /*
+         * LED register (for rt61pci & rt73usb).
+         */
+        u16 led_reg;
+
+        /*
+         * Led mode (LED_MODE_*)
+         */
+        u8 led_mode;
+
+        /*
+         * 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;
+
+        /*
+         * Beacon scheduled work.
+         */
+        struct work_struct beacon_work;
+
+        /*
+         * Data ring arrays for RX, TX and Beacon.
+         * The Beacon array also contains the Atim ring
+         * if that is supported by the device.
+         */
+        int data_rings;
+        struct data_ring *rx;
+        struct data_ring *tx;
+        struct data_ring *bcn;
+
+        /*
+         * Firmware image.
+         */
+        const struct firmware *fw;
+};
+
+/*
+ * For-each loop for the ring array.
+ * All rings have been allocated as a single array,
+ * this means we can create a very simply loop macro
+ * that is capable of looping through all rings.
+ * ring_end(), txring_end() and ring_loop() are helper macro's which
+ * should not be used directly. Instead the following should be used:
+ * ring_for_each() - Loops through all rings (RX, TX, Beacon & Atim)
+ * txring_for_each() - Loops through TX data rings (TX only)
+ * txringall_for_each() - Loops through all TX rings (TX, Beacon & Atim)
+ */
+#define ring_end(__dev) \
+        &(__dev)->rx[(__dev)->data_rings]
+
+#define txring_end(__dev) \
+        &(__dev)->tx[(__dev)->hw->queues]
+
+#define ring_loop(__entry, __start, __end)                      \
+        for ((__entry) = (__start);                             \
+             prefetch(&(__entry)[1]), (__entry) != (__end);     \
+             (__entry) = &(__entry)[1])
+
+#define ring_for_each(__dev, __entry) \
+        ring_loop(__entry, (__dev)->rx, ring_end(__dev))
+
+#define txring_for_each(__dev, __entry) \
+        ring_loop(__entry, (__dev)->tx, txring_end(__dev))
+
+#define txringall_for_each(__dev, __entry) \
+        ring_loop(__entry, (__dev)->tx, ring_end(__dev))
+
+/*
+ * Generic RF access.
+ * The RF is being accessed by word index.
+ */
+static inline void rt2x00_rf_read(const struct rt2x00_dev *rt2x00dev,
+                                  const unsigned int word, u32 *data)
+{
+        *data = rt2x00dev->rf[word];
+}
+
+static inline void rt2x00_rf_write(const 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(const struct rt2x00_dev *rt2x00dev,
+                                       const unsigned int word)
+{
+        return (void *)&rt2x00dev->eeprom[word];
+}
+
+static inline void rt2x00_eeprom_read(const struct rt2x00_dev *rt2x00dev,
+                                      const unsigned int word, u16 *data)
+{
+        *data = le16_to_cpu(rt2x00dev->eeprom[word]);
+}
+
+static inline void rt2x00_eeprom_write(const 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_get_rev(const struct rt2x00_chip *chipset)
+{
+        return chipset->rev;
+}
+
+static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset, const u32 mask)
+{
+        return chipset->rev & mask;
+}
+
+/*
+ * 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);
+}
+
+/*
+ * Library functions.
+ */
+struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
+                                     const unsigned int queue);
+
+/*
+ * Interrupt context handlers.
+ */
+void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
+void rt2x00lib_txdone(struct data_entry *entry,
+                      const int status, const int retry);
+void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
+                      const int signal, const int rssi, const int ofdm);
+
+/*
+ * 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);
+
+/*
+ * mac80211 handlers.
+ */
+int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
+                 struct ieee80211_tx_control *control);
+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, int if_id,
+                               struct ieee80211_if_conf *conf);
+void rt2x00mac_set_multicast_list(struct ieee80211_hw *hw,
+                                  unsigned short flags, int mc_count);
+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);
+int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int 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 */