wl3501_cs.c

/*
 * WL3501 Wireless LAN PCMCIA Card Driver for Linux
 * Written originally for Linux 2.0.30 by Fox Chen, mhchen@golf.ccl.itri.org.tw
 * Ported to 2.2, 2.4 & 2.5 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 * Wireless extensions in 2.4 by Gustavo Niemeyer <niemeyer@conectiva.com>
 *
 * References used by Fox Chen while writing the original driver for 2.0.30:
 *
 *   1. WL24xx packet drivers (tooasm.asm)
 *   2. Access Point Firmware Interface Specification for IEEE 802.11 SUTRO
 *   3. IEEE 802.11
 *   4. Linux network driver (/usr/src/linux/drivers/net)
 *   5. ISA card driver - wl24.c
 *   6. Linux PCMCIA skeleton driver - skeleton.c
 *   7. Linux PCMCIA 3c589 network driver - 3c589_cs.c
 *
 * Tested with WL2400 firmware 1.2, Linux 2.0.30, and pcmcia-cs-2.9.12
 *   1. Performance: about 165 Kbytes/sec in TCP/IP with Ad-Hoc mode.
 *      rsh 192.168.1.3 "dd if=/dev/zero bs=1k count=1000" > /dev/null
 *      (Specification 2M bits/sec. is about 250 Kbytes/sec., but we must deduct
 *       ETHER/IP/UDP/TCP header, and acknowledgement overhead)
 *
 * Tested with Planet AP in 2.4.17, 184 Kbytes/s in UDP in Infrastructure mode,
 * 173 Kbytes/s in TCP.
 *
 * Tested with Planet AP in 2.5.73-bk, 216 Kbytes/s in Infrastructure mode
 * with a SMP machine (dual pentium 100), using pktgen, 432 pps (pkt_size = 60)
 */

#include <linux/delay.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fcntl.h>
#include <linux/if_arp.h>
#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/wireless.h>
#include <linux/ieee80211.h>

#include <net/iw_handler.h>

#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>

#include <asm/io.h>
#include <asm/uaccess.h>

#include "wl3501.h"

#ifndef __i386__
#define slow_down_io()
#endif

/* For rough constant delay */
#define WL3501_NOPLOOP(n) { int x = 0; while (x++ < n) slow_down_io(); }



#define wl3501_outb(a, b) { outb(a, b); slow_down_io(); }
#define wl3501_outb_p(a, b) { outb_p(a, b); slow_down_io(); }
#define wl3501_outsb(a, b, c) { outsb(a, b, c); slow_down_io(); }