755a957d40
The validation of the chipset revision was broken since for rt2500usb and rt73usb different registers should be read. When rt2500usb was loaded for a rt73 device it would false think the chipset was correct because the wrong register was read and validated. This has been fixed by expanding the check to also see if the first 4 bits of the revision is not-0 (When reading the wrong register offset the returned value is usually 0 which can be interpreted as invalid) Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
841 lines
21 KiB
C
841 lines
21 KiB
C
/*
|
|
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 "2.0.10"
|
|
#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 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;
|
|
};
|
|
|
|
/*
|
|
* 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_*).
|
|
* When set to INVALID_INTERFACE, no interface is configured.
|
|
*/
|
|
int type;
|
|
#define INVALID_INTERFACE IEEE80211_IF_TYPE_INVALID
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
unsigned int filter;
|
|
};
|
|
|
|
static inline int is_interface_present(struct interface *intf)
|
|
{
|
|
return !!intf->id;
|
|
}
|
|
|
|
static inline int is_interface_type(struct interface *intf, int type)
|
|
{
|
|
return intf->type == type;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
|
|
int phymode;
|
|
|
|
int basic_rates;
|
|
int slot_time;
|
|
|
|
short sifs;
|
|
short pifs;
|
|
short difs;
|
|
short eifs;
|
|
};
|
|
|
|
/*
|
|
* 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 txdata_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);
|
|
int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev, int maxpacket,
|
|
struct sk_buff *skb);
|
|
void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
|
|
unsigned int queue);
|
|
|
|
/*
|
|
* RX control handlers
|
|
*/
|
|
void (*fill_rxdone) (struct data_entry *entry,
|
|
struct rxdata_entry_desc *desc);
|
|
|
|
/*
|
|
* Configuration handlers.
|
|
*/
|
|
void (*config_mac_addr) (struct rt2x00_dev *rt2x00dev, __le32 *mac);
|
|
void (*config_bssid) (struct rt2x00_dev *rt2x00dev, __le32 *bssid);
|
|
void (*config_type) (struct rt2x00_dev *rt2x00dev, const int type,
|
|
const int tsf_sync);
|
|
void (*config_preamble) (struct rt2x00_dev *rt2x00dev,
|
|
const int short_preamble,
|
|
const int ack_timeout,
|
|
const int ack_consume_time);
|
|
void (*config) (struct rt2x00_dev *rt2x00dev, const unsigned int flags,
|
|
struct rt2x00lib_conf *libconf);
|
|
#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 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_RING,
|
|
|
|
/*
|
|
* 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,
|
|
CONFIG_SHORT_PREAMBLE,
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
|
|
/*
|
|
* 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;
|
|
|
|
/*
|
|
* Scheduled work.
|
|
*/
|
|
struct work_struct beacon_work;
|
|
struct work_struct filter_work;
|
|
struct work_struct config_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_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);
|
|
}
|
|
|
|
/*
|
|
* 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,
|
|
struct rxdata_entry_desc *desc);
|
|
|
|
/*
|
|
* 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);
|
|
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_erp_ie_changed(struct ieee80211_hw *hw, u8 changes,
|
|
int cts_protection, int preamble);
|
|
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 */
|