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linux/drivers/net/wireless/wavelan_cs.p.h

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/*
* Wavelan Pcmcia driver
*
* Jean II - HPLB '96
*
* Reorganisation and extension of the driver.
*
* This file contain all definition and declarations necessary for the
* wavelan pcmcia driver. This file is a private header, so it should
* be included only on wavelan_cs.c !!!
*/
#ifndef WAVELAN_CS_P_H
#define WAVELAN_CS_P_H
/************************** DOCUMENTATION **************************/
/*
* This driver provide a Linux interface to the Wavelan Pcmcia hardware
* The Wavelan is a product of Lucent (http://www.wavelan.com/).
* This division was formerly part of NCR and then AT&T.
* Wavelan are also distributed by DEC (RoamAbout DS)...
*
* To know how to use this driver, read the PCMCIA HOWTO.
* If you want to exploit the many other fonctionalities, look comments
* in the code...
*
* This driver is the result of the effort of many peoples (see below).
*/
/* ------------------------ SPECIFIC NOTES ------------------------ */
/*
* Web page
* --------
* I try to maintain a web page with the Wireless LAN Howto at :
* http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Wavelan.html
*
* SMP
* ---
* We now are SMP compliant (I eventually fixed the remaining bugs).
* The driver has been tested on a dual P6-150 and survived my usual
* set of torture tests.
* Anyway, I spent enough time chasing interrupt re-entrancy during
* errors or reconfigure, and I designed the locked/unlocked sections
* of the driver with great care, and with the recent addition of
* the spinlock (thanks to the new API), we should be quite close to
* the truth.
* The SMP/IRQ locking is quite coarse and conservative (i.e. not fast),
* but better safe than sorry (especially at 2 Mb/s ;-).
*
* I have also looked into disabling only our interrupt on the card
* (via HACR) instead of all interrupts in the processor (via cli),
* so that other driver are not impacted, and it look like it's
* possible, but it's very tricky to do right (full of races). As
* the gain would be mostly for SMP systems, it can wait...
*
* Debugging and options
* ---------------------
* You will find below a set of '#define" allowing a very fine control
* on the driver behaviour and the debug messages printed.
* The main options are :
* o WAVELAN_ROAMING, for the experimental roaming support.
* o SET_PSA_CRC, to have your card correctly recognised by
* an access point and the Point-to-Point diagnostic tool.
* o USE_PSA_CONFIG, to read configuration from the PSA (EEprom)
* (otherwise we always start afresh with some defaults)
*
* wavelan_cs.o is darn too big
* -------------------------
* That's true ! There is a very simple way to reduce the driver
* object by 33% (yes !). Comment out the following line :
* #include <linux/wireless.h>
* Other compile options can also reduce the size of it...
*
* MAC address and hardware detection :
* ----------------------------------
* The detection code of the wavelan chech that the first 3
* octets of the MAC address fit the company code. This type of
* detection work well for AT&T cards (because the AT&T code is
* hardcoded in wavelan_cs.h), but of course will fail for other
* manufacturer.
*
* If you are sure that your card is derived from the wavelan,
* here is the way to configure it :
* 1) Get your MAC address
* a) With your card utilities (wfreqsel, instconf, ...)
* b) With the driver :
* o compile the kernel with DEBUG_CONFIG_INFO enabled
* o Boot and look the card messages
* 2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan_cs.h)
* 3) Compile & verify
* 4) Send me the MAC code - I will include it in the next version...
*
*/
/* --------------------- WIRELESS EXTENSIONS --------------------- */
/*
* This driver is the first one to support "wireless extensions".
* This set of extensions provide you some way to control the wireless
* caracteristics of the hardware in a standard way and support for
* applications for taking advantage of it (like Mobile IP).
*
* It might be a good idea as well to fetch the wireless tools to
* configure the device and play a bit.
*/
/* ---------------------------- FILES ---------------------------- */
/*
* wavelan_cs.c : The actual code for the driver - C functions
*
* wavelan_cs.p.h : Private header : local types / vars for the driver
*
* wavelan_cs.h : Description of the hardware interface & structs
*
* i82593.h : Description if the Ethernet controller
*/
/* --------------------------- HISTORY --------------------------- */
/*
* The history of the Wavelan drivers is as complicated as history of
* the Wavelan itself (NCR -> AT&T -> Lucent).
*
* All started with Anders Klemets <klemets@paul.rutgers.edu>,
* writing a Wavelan ISA driver for the MACH microkernel. Girish
* Welling <welling@paul.rutgers.edu> had also worked on it.
* Keith Moore modify this for the Pcmcia hardware.
*
* Robert Morris <rtm@das.harvard.edu> port these two drivers to BSDI
* and add specific Pcmcia support (there is currently no equivalent
* of the PCMCIA package under BSD...).
*
* Jim Binkley <jrb@cs.pdx.edu> port both BSDI drivers to FreeBSD.
*
* Bruce Janson <bruce@cs.usyd.edu.au> port the BSDI ISA driver to Linux.
*
* Anthony D. Joseph <adj@lcs.mit.edu> started modify Bruce driver
* (with help of the BSDI PCMCIA driver) for PCMCIA.
* Yunzhou Li <yunzhou@strat.iol.unh.edu> finished is work.
* Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start
* correctly 2.00 cards (2.4 GHz with frequency selection).
* David Hinds <dahinds@users.sourceforge.net> integrated the whole in his
* Pcmcia package (+ bug corrections).
*
* I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some
* patchs to the Pcmcia driver. After, I added code in the ISA driver
* for Wireless Extensions and full support of frequency selection
* cards. Now, I'm doing the same to the Pcmcia driver + some
* reorganisation.
* Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me
* much needed informations on the Wavelan hardware.
*/
/* By the way : for the copyright & legal stuff :
* Almost everybody wrote code under GNU or BSD license (or alike),
* and want that their original copyright remain somewhere in the
* code (for myself, I go with the GPL).
* Nobody want to take responsibility for anything, except the fame...
*/
/* --------------------------- CREDITS --------------------------- */
/*
* Credits:
* Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht and
* Loeke Brederveld of Lucent for providing extremely useful
* information about WaveLAN PCMCIA hardware
*
* This driver is based upon several other drivers, in particular:
* David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter
* Bruce Janson's Linux driver for the AT-bus WaveLAN adapter
* Anders Klemets' PCMCIA WaveLAN adapter driver
* Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter
*
* Additional Credits:
*
* This software was originally developed under Linux 1.2.3
* (Slackware 2.0 distribution).
* And then under Linux 2.0.x (Debian 1.1 -> 2.2 - pcmcia 2.8.18+)
* with an HP OmniBook 4000 and then a 5500.
*
* It is based on other device drivers and information either written
* or supplied by:
* James Ashton (jaa101@syseng.anu.edu.au),
* Ajay Bakre (bakre@paul.rutgers.edu),
* Donald Becker (becker@super.org),
* Jim Binkley <jrb@cs.pdx.edu>,
* Loeke Brederveld <lbrederv@wavelan.com>,
* Allan Creighton (allanc@cs.su.oz.au),
* Brent Elphick <belphick@uwaterloo.ca>,
* Joe Finney <joe@comp.lancs.ac.uk>,
* Matthew Geier (matthew@cs.su.oz.au),
* Remo di Giovanni (remo@cs.su.oz.au),
* Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM),
* David Hinds <dahinds@users.sourceforge.net>,
* Jan Hoogendoorn (c/o marteijn@lucent.com),
* Bruce Janson <bruce@cs.usyd.edu.au>,
* Anthony D. Joseph <adj@lcs.mit.edu>,
* Anders Klemets (klemets@paul.rutgers.edu),
* Yunzhou Li <yunzhou@strat.iol.unh.edu>,
* Marc Meertens (mmeertens@lucent.com),
* Keith Moore,
* Robert Morris (rtm@das.harvard.edu),
* Ian Parkin (ian@cs.su.oz.au),
* John Rosenberg (johnr@cs.su.oz.au),
* George Rossi (george@phm.gov.au),
* Arthur Scott (arthur@cs.su.oz.au),
* Stanislav Sinyagin <stas@isf.ru>
* Peter Storey,
* Jean Tourrilhes <jt@hpl.hp.com>,
* Girish Welling (welling@paul.rutgers.edu)
* Clark Woodworth <clark@hiway1.exit109.com>
* Yongguang Zhang <ygz@isl.hrl.hac.com>...
*/
/* ------------------------- IMPROVEMENTS ------------------------- */
/*
* I proudly present :
*
* Changes made in 2.8.22 :
* ----------------------
* - improved wv_set_multicast_list
* - catch spurious interrupt
* - correct release of the device
*
* Changes mades in release :
* ------------------------
* - Reorganisation of the code, function name change
* - Creation of private header (wavelan_cs.h)
* - Reorganised debug messages
* - More comments, history, ...
* - Configure earlier (in "insert" instead of "open")
* and do things only once
* - mmc_init : configure the PSA if not done
* - mmc_init : 2.00 detection better code for 2.00 init
* - better info at startup
* - Correct a HUGE bug (volatile & uncalibrated busy loop)
* in wv_82593_cmd => config speedup
* - Stop receiving & power down on close (and power up on open)
* use "ifconfig down" & "ifconfig up ; route add -net ..."
* - Send packets : add watchdog instead of pooling
* - Receive : check frame wrap around & try to recover some frames
* - wavelan_set_multicast_list : avoid reset
* - add wireless extensions (ioctl & get_wireless_stats)
* get/set nwid/frequency on fly, info for /proc/net/wireless
* - Suppress useless stuff from lp (net_local), but add link
* - More inlines
* - Lot of others minor details & cleanups
*
* Changes made in second release :
* ------------------------------
* - Optimise wv_85893_reconfig stuff, fix potential problems
* - Change error values for ioctl
* - Non blocking wv_ru_stop() + call wv_reset() in case of problems
* - Remove development printk from wavelan_watchdog()
* - Remove of the watchdog to wavelan_close instead of wavelan_release
* fix potential problems...
* - Start debugging suspend stuff (but it's still a bit weird)
* - Debug & optimize dump header/packet in Rx & Tx (debug)
* - Use "readb" and "writeb" to be kernel 2.1 compliant
* - Better handling of bogus interrupts
* - Wireless extension : SETSPY and GETSPY
* - Remove old stuff (stats - for those needing it, just ask me...)
* - Make wireless extensions optional
*
* Changes made in third release :
* -----------------------------
* - cleanups & typos
* - modif wireless ext (spy -> only one pointer)
* - new private ioctl to set/get quality & level threshold
* - Init : correct default value of level threshold for pcmcia
* - kill watchdog in hw_reset
* - more 2.1 support (copy_to/from_user instead of memcpy_to/fromfs)
* - Add message level (debug stuff in /var/adm/debug & errors not
* displayed at console and still in /var/adm/messages)
*
* Changes made in fourth release :
* ------------------------------
* - multicast support (yes !) thanks to Yongguang Zhang.
*
* Changes made in fifth release (2.9.0) :
* -------------------------------------
* - Revisited multicast code (it was mostly wrong).
* - protect code in wv_82593_reconfig with dev->tbusy (oups !)
*
* Changes made in sixth release (2.9.1a) :
* --------------------------------------
* - Change the detection code for multi manufacturer code support
* - Correct bug (hang kernel) in init when we were "rejecting" a card
*
* Changes made in seventh release (2.9.1b) :
* ----------------------------------------
* - Update to wireless extensions changes
* - Silly bug in card initial configuration (psa_conf_status)
*
* Changes made in eigth release :
* -----------------------------
* - Small bug in debug code (probably not the last one...)
* - 1.2.13 support (thanks to Clark Woodworth)
*
* Changes made for release in 2.9.2b :
* ----------------------------------
* - Level threshold is now a standard wireless extension (version 4 !)
* - modules parameters types for kernel > 2.1.17
* - updated man page
* - Others cleanup from David Hinds
*
* Changes made for release in 2.9.5 :
* ---------------------------------
* - byte count stats (courtesy of David Hinds)
* - Remove dev_tint stuff (courtesy of David Hinds)
* - Others cleanup from David Hinds
* - Encryption setting from Brent Elphick (thanks a lot !)
* - 'base' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin)
*
* Changes made for release in 2.9.6 :
* ---------------------------------
* - fix bug : no longuer disable watchdog in case of bogus interrupt
* - increase timeout in config code for picky hardware
* - mask unused bits in status (Wireless Extensions)
*
* Changes integrated by Justin Seger <jseger@MIT.EDU> & David Hinds :
* -----------------------------------------------------------------
* - Roaming "hack" from Joe Finney <joe@comp.lancs.ac.uk>
* - PSA CRC code from Bob Gray <rgray@bald.cs.dartmouth.edu>
* - Better initialisation of the i82593 controller
* from Joseph K. O'Sullivan <josullvn+@cs.cmu.edu>
*
* Changes made for release in 3.0.10 :
* ----------------------------------
* - Fix eject "hang" of the driver under 2.2.X :
* o create wv_flush_stale_links()
* o Rename wavelan_release to wv_pcmcia_release & move up
* o move unregister_netdev to wavelan_detach()
* o wavelan_release() no longer call wavelan_detach()
* o Suppress "release" timer
* o Other cleanups & fixes
* - New MAC address in the probe
* - Reorg PSA_CRC code (endian neutral & cleaner)
* - Correct initialisation of the i82593 from Lucent manual
* - Put back the watchdog, with larger timeout
* - TRANSMIT_NO_CRC is a "normal" error, so recover from it
* from Derrick J Brashear <shadow@dementia.org>
* - Better handling of TX and RX normal failure conditions
* - #ifdef out all the roaming code
* - Add ESSID & "AP current address" ioctl stubs
* - General cleanup of the code
*
* Changes made for release in 3.0.13 :
* ----------------------------------
* - Re-enable compilation of roaming code by default, but with
* do_roaming = 0
* - Nuke `nwid=nwid^ntohs(beacon->domain_id)' in wl_roam_gather
* at the demand of John Carol Langford <jcl@gs176.sp.cs.cmu.edu>
* - Introduced WAVELAN_ROAMING_EXT for incomplete ESSID stuff.
*
* Changes made for release in 3.0.15 :
* ----------------------------------
* - Change e-mail and web page addresses
* - Watchdog timer is now correctly expressed in HZ, not in jiffies
* - Add channel number to the list of frequencies in range
* - Add the (short) list of bit-rates in range
* - Developp a new sensitivity... (sens.value & sens.fixed)
*
* Changes made for release in 3.1.2 :
* ---------------------------------
* - Fix check for root permission (break instead of exit)
* - New nwid & encoding setting (Wireless Extension 9)
*
* Changes made for release in 3.1.12 :
* ----------------------------------
* - reworked wv_82593_cmd to avoid using the IRQ handler and doing
* ugly things with interrupts.
* - Add IRQ protection in 82593_config/ru_start/ru_stop/watchdog
* - Update to new network API (softnet - 2.3.43) :
* o replace dev->tbusy (David + me)
* o replace dev->tstart (David + me)
* o remove dev->interrupt (David)
* o add SMP locking via spinlock in splxx (me)
* o add spinlock in interrupt handler (me)
* o use kernel watchdog instead of ours (me)
* o verify that all the changes make sense and work (me)
* - Re-sync kernel/pcmcia versions (not much actually)
* - A few other cleanups (David & me)...
*
* Changes made for release in 3.1.22 :
* ----------------------------------
* - Check that SMP works, remove annoying log message
*
* Changes made for release in 3.1.24 :
* ----------------------------------
* - Fix unfrequent card lockup when watchdog was reseting the hardware :
* o control first busy loop in wv_82593_cmd()
* o Extend spinlock protection in wv_hw_config()
*
* Changes made for release in 3.1.33 :
* ----------------------------------
* - Optional use new driver API for Wireless Extensions :
* o got rid of wavelan_ioctl()
* o use a bunch of iw_handler instead
*
* Changes made for release in 3.2.1 :
* ---------------------------------
* - Set dev->trans_start to avoid filling the logs
* (and generating useless abort commands)
* - Avoid deadlocks in mmc_out()/mmc_in()
*
* Wishes & dreams:
* ----------------
* - Cleanup and integrate the roaming code
* (std debug, set DomainID, decay avg and co...)
*/
/***************************** INCLUDES *****************************/
/* Linux headers that we need */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/in.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/system.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <linux/fcntl.h>
#include <linux/ethtool.h>
#include <linux/wireless.h> /* Wireless extensions */
#include <net/iw_handler.h> /* New driver API */
/* Pcmcia headers that we need */
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
/* Wavelan declarations */
#include "i82593.h" /* Definitions for the Intel chip */
#include "wavelan_cs.h" /* Others bits of the hardware */
/************************** DRIVER OPTIONS **************************/
/*
* `#define' or `#undef' the following constant to change the behaviour
* of the driver...
*/
#define WAVELAN_ROAMING /* Include experimental roaming code */
#undef WAVELAN_ROAMING_EXT /* Enable roaming wireless extensions */
#undef SET_PSA_CRC /* Set the CRC in PSA (slower) */
#define USE_PSA_CONFIG /* Use info from the PSA */
#undef STRUCT_CHECK /* Verify padding of structures */
#undef EEPROM_IS_PROTECTED /* Doesn't seem to be necessary */
#define MULTICAST_AVOID /* Avoid extra multicast (I'm sceptical) */
#undef SET_MAC_ADDRESS /* Experimental */
/* Warning : these stuff will slow down the driver... */
#define WIRELESS_SPY /* Enable spying addresses */
#undef HISTOGRAM /* Enable histogram of sig level... */
/****************************** DEBUG ******************************/
#undef DEBUG_MODULE_TRACE /* Module insertion/removal */
#undef DEBUG_CALLBACK_TRACE /* Calls made by Linux */
#undef DEBUG_INTERRUPT_TRACE /* Calls to handler */
#undef DEBUG_INTERRUPT_INFO /* type of interrupt & so on */
#define DEBUG_INTERRUPT_ERROR /* problems */
#undef DEBUG_CONFIG_TRACE /* Trace the config functions */
#undef DEBUG_CONFIG_INFO /* What's going on... */
#define DEBUG_CONFIG_ERRORS /* Errors on configuration */
#undef DEBUG_TX_TRACE /* Transmission calls */
#undef DEBUG_TX_INFO /* Header of the transmitted packet */
#undef DEBUG_TX_FAIL /* Normal failure conditions */
#define DEBUG_TX_ERROR /* Unexpected conditions */
#undef DEBUG_RX_TRACE /* Transmission calls */
#undef DEBUG_RX_INFO /* Header of the transmitted packet */
#undef DEBUG_RX_FAIL /* Normal failure conditions */
#define DEBUG_RX_ERROR /* Unexpected conditions */
#undef DEBUG_PACKET_DUMP /* Dump packet on the screen */
#undef DEBUG_IOCTL_TRACE /* Misc call by Linux */
#undef DEBUG_IOCTL_INFO /* Various debug info */
#define DEBUG_IOCTL_ERROR /* What's going wrong */
#define DEBUG_BASIC_SHOW /* Show basic startup info */
#undef DEBUG_VERSION_SHOW /* Print version info */
#undef DEBUG_PSA_SHOW /* Dump psa to screen */
#undef DEBUG_MMC_SHOW /* Dump mmc to screen */
#undef DEBUG_SHOW_UNUSED /* Show also unused fields */
#undef DEBUG_I82593_SHOW /* Show i82593 status */
#undef DEBUG_DEVICE_SHOW /* Show device parameters */
/************************ CONSTANTS & MACROS ************************/
#ifdef DEBUG_VERSION_SHOW
static const char *version = "wavelan_cs.c : v24 (SMP + wireless extensions) 11/1/02\n";
#endif
/* Watchdog temporisation */
#define WATCHDOG_JIFFIES (256*HZ/100)
/* Fix a bug in some old wireless extension definitions */
#ifndef IW_ESSID_MAX_SIZE
#define IW_ESSID_MAX_SIZE 32
#endif
/* ------------------------ PRIVATE IOCTL ------------------------ */
#define SIOCSIPQTHR SIOCIWFIRSTPRIV /* Set quality threshold */
#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1 /* Get quality threshold */
#define SIOCSIPROAM SIOCIWFIRSTPRIV + 2 /* Set roaming state */
#define SIOCGIPROAM SIOCIWFIRSTPRIV + 3 /* Get roaming state */
#define SIOCSIPHISTO SIOCIWFIRSTPRIV + 4 /* Set histogram ranges */
#define SIOCGIPHISTO SIOCIWFIRSTPRIV + 5 /* Get histogram values */
/*************************** WaveLAN Roaming **************************/
#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
#define WAVELAN_ROAMING_DEBUG 0 /* 1 = Trace of handover decisions */
/* 2 = Info on each beacon rcvd... */
#define MAX_WAVEPOINTS 7 /* Max visible at one time */
#define WAVEPOINT_HISTORY 5 /* SNR sample history slow search */
#define WAVEPOINT_FAST_HISTORY 2 /* SNR sample history fast search */
#define SEARCH_THRESH_LOW 10 /* SNR to enter cell search */
#define SEARCH_THRESH_HIGH 13 /* SNR to leave cell search */
#define WAVELAN_ROAMING_DELTA 1 /* Hysteresis value (+/- SNR) */
#define CELL_TIMEOUT 2*HZ /* in jiffies */
#define FAST_CELL_SEARCH 1 /* Boolean values... */
#define NWID_PROMISC 1 /* for code clarity. */
typedef struct wavepoint_beacon
{
unsigned char dsap, /* Unused */
ssap, /* Unused */
ctrl, /* Unused */
O,U,I, /* Unused */
spec_id1, /* Unused */
spec_id2, /* Unused */
pdu_type, /* Unused */
seq; /* WavePoint beacon sequence number */
unsigned short domain_id, /* WavePoint Domain ID */
nwid; /* WavePoint NWID */
} wavepoint_beacon;
typedef struct wavepoint_history
{
unsigned short nwid; /* WavePoint's NWID */
int average_slow; /* SNR running average */
int average_fast; /* SNR running average */
unsigned char sigqual[WAVEPOINT_HISTORY]; /* Ringbuffer of recent SNR's */
unsigned char qualptr; /* Index into ringbuffer */
unsigned char last_seq; /* Last seq. no seen for WavePoint */
struct wavepoint_history *next; /* Next WavePoint in table */
struct wavepoint_history *prev; /* Previous WavePoint in table */
unsigned long last_seen; /* Time of last beacon recvd, jiffies */
} wavepoint_history;
struct wavepoint_table
{
wavepoint_history *head; /* Start of ringbuffer */
int num_wavepoints; /* No. of WavePoints visible */
unsigned char locked; /* Table lock */
};
#endif /* WAVELAN_ROAMING */
/****************************** TYPES ******************************/
/* Shortcuts */
typedef struct net_device_stats en_stats;
typedef struct iw_statistics iw_stats;
typedef struct iw_quality iw_qual;
typedef struct iw_freq iw_freq;
typedef struct net_local net_local;
typedef struct timer_list timer_list;
/* Basic types */
typedef u_char mac_addr[WAVELAN_ADDR_SIZE]; /* Hardware address */
/*
* Static specific data for the interface.
*
* For each network interface, Linux keep data in two structure. "device"
* keep the generic data (same format for everybody) and "net_local" keep
* the additional specific data.
* Note that some of this specific data is in fact generic (en_stats, for
* example).
*/
struct net_local
{
dev_node_t node; /* ???? What is this stuff ???? */
struct net_device * dev; /* Reverse link... */
spinlock_t spinlock; /* Serialize access to the hardware (SMP) */
struct pcmcia_device * link; /* pcmcia structure */
en_stats stats; /* Ethernet interface statistics */
int nresets; /* Number of hw resets */
u_char configured; /* If it is configured */
u_char reconfig_82593; /* Need to reconfigure the controller */
u_char promiscuous; /* Promiscuous mode */
u_char allmulticast; /* All Multicast mode */
int mc_count; /* Number of multicast addresses */
int stop; /* Current i82593 Stop Hit Register */
int rfp; /* Last DMA machine receive pointer */
int overrunning; /* Receiver overrun flag */
iw_stats wstats; /* Wireless specific stats */
struct iw_spy_data spy_data;
struct iw_public_data wireless_data;
#ifdef HISTOGRAM
int his_number; /* Number of intervals */
u_char his_range[16]; /* Boundaries of interval ]n-1; n] */
u_long his_sum[16]; /* Sum in interval */
#endif /* HISTOGRAM */
#ifdef WAVELAN_ROAMING
u_long domain_id; /* Domain ID we lock on for roaming */
int filter_domains; /* Check Domain ID of beacon found */
struct wavepoint_table wavepoint_table; /* Table of visible WavePoints*/
wavepoint_history * curr_point; /* Current wavepoint */
int cell_search; /* Searching for new cell? */
struct timer_list cell_timer; /* Garbage collection */
#endif /* WAVELAN_ROAMING */
void __iomem *mem;
};
/* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */
static inline u_char /* data */
hasr_read(u_long); /* Read the host interface : base address */
static inline void
hacr_write(u_long, /* Write to host interface : base address */
u_char), /* data */
hacr_write_slow(u_long,
u_char);
static void
psa_read(struct net_device *, /* Read the Parameter Storage Area */
int, /* offset in PSA */
u_char *, /* buffer to fill */
int), /* size to read */
psa_write(struct net_device *, /* Write to the PSA */
int, /* Offset in psa */
u_char *, /* Buffer in memory */
int); /* Length of buffer */
static inline void
mmc_out(u_long, /* Write 1 byte to the Modem Manag Control */
u_short,
u_char),
mmc_write(u_long, /* Write n bytes to the MMC */
u_char,
u_char *,
int);
static inline u_char /* Read 1 byte from the MMC */
mmc_in(u_long,
u_short);
static inline void
mmc_read(u_long, /* Read n bytes from the MMC */
u_char,
u_char *,
int),
fee_wait(u_long, /* Wait for frequency EEprom : base address */
int, /* Base delay to wait for */
int); /* Number of time to wait */
static void
fee_read(u_long, /* Read the frequency EEprom : base address */
u_short, /* destination offset */
u_short *, /* data buffer */
int); /* number of registers */
/* ---------------------- I82593 SUBROUTINES ----------------------- */
static int
wv_82593_cmd(struct net_device *, /* synchronously send a command to i82593 */
char *,
int,
int);
static inline int
wv_diag(struct net_device *); /* Diagnostique the i82593 */
static int
read_ringbuf(struct net_device *, /* Read a receive buffer */
int,
char *,
int);
static inline void
wv_82593_reconfig(struct net_device *); /* Reconfigure the controller */
/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
static inline void
wv_init_info(struct net_device *); /* display startup info */
/* ------------------- IOCTL, STATS & RECONFIG ------------------- */
static en_stats *
wavelan_get_stats(struct net_device *); /* Give stats /proc/net/dev */
static iw_stats *
wavelan_get_wireless_stats(struct net_device *);
/* ----------------------- PACKET RECEPTION ----------------------- */
static inline int
wv_start_of_frame(struct net_device *, /* Seek beggining of current frame */
int, /* end of frame */
int); /* start of buffer */
static inline void
wv_packet_read(struct net_device *, /* Read a packet from a frame */
int,
int),
wv_packet_rcv(struct net_device *); /* Read all packets waiting */
/* --------------------- PACKET TRANSMISSION --------------------- */
static inline void
wv_packet_write(struct net_device *, /* Write a packet to the Tx buffer */
void *,
short);
static int
wavelan_packet_xmit(struct sk_buff *, /* Send a packet */
struct net_device *);
/* -------------------- HARDWARE CONFIGURATION -------------------- */
static inline int
wv_mmc_init(struct net_device *); /* Initialize the modem */
static int
wv_ru_stop(struct net_device *), /* Stop the i82593 receiver unit */
wv_ru_start(struct net_device *); /* Start the i82593 receiver unit */
static int
wv_82593_config(struct net_device *); /* Configure the i82593 */
static inline int
wv_pcmcia_reset(struct net_device *); /* Reset the pcmcia interface */
static int
wv_hw_config(struct net_device *); /* Reset & configure the whole hardware */
static inline void
wv_hw_reset(struct net_device *); /* Same, + start receiver unit */
static inline int
wv_pcmcia_config(struct pcmcia_device *); /* Configure the pcmcia interface */
static void
wv_pcmcia_release(struct pcmcia_device *);/* Remove a device */
/* ---------------------- INTERRUPT HANDLING ---------------------- */
static irqreturn_t
wavelan_interrupt(int, /* Interrupt handler */
void *);
static void
wavelan_watchdog(struct net_device *); /* Transmission watchdog */
/* ------------------- CONFIGURATION CALLBACKS ------------------- */
static int
wavelan_open(struct net_device *), /* Open the device */
wavelan_close(struct net_device *); /* Close the device */
static void
wavelan_detach(struct pcmcia_device *p_dev); /* Destroy a removed device */
/**************************** VARIABLES ****************************/
/*
* Parameters that can be set with 'insmod'
* The exact syntax is 'insmod wavelan_cs.o <var>=<value>'
*/
/* Shared memory speed, in ns */
static int mem_speed = 0;
/* New module interface */
module_param(mem_speed, int, 0);
#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
/* Enable roaming mode ? No ! Please keep this to 0 */
static int do_roaming = 0;
module_param(do_roaming, bool, 0);
#endif /* WAVELAN_ROAMING */
MODULE_LICENSE("GPL");
#endif /* WAVELAN_CS_P_H */
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