1 /*********************************************************************
3 * Filename: netwave_cs.c
5 * Description: Netwave AirSurfer Wireless LAN PC Card driver
6 * Status: Experimental.
7 * Authors: John Markus Bjørndalen <johnm@cs.uit.no>
8 * Dag Brattli <dagb@cs.uit.no>
9 * David Hinds <dahinds@users.sourceforge.net>
10 * Created at: A long time ago!
11 * Modified at: Mon Nov 10 11:54:37 1997
12 * Modified by: Dag Brattli <dagb@cs.uit.no>
14 * Copyright (c) 1997 University of Tromsø, Norway
18 * 08-Nov-97 15:14:47 John Markus Bjørndalen <johnm@cs.uit.no>
19 * - Fixed some bugs in netwave_rx and cleaned it up a bit.
20 * (One of the bugs would have destroyed packets when receiving
21 * multiple packets per interrupt).
22 * - Cleaned up parts of newave_hw_xmit.
23 * - A few general cleanups.
24 * 24-Oct-97 13:17:36 Dag Brattli <dagb@cs.uit.no>
25 * - Fixed netwave_rx receive function (got updated docs)
27 * - Changed name from xircnw to netwave, take a look at
28 * http://www.netwave-wireless.com
29 * - Some reorganizing of the code
30 * - Removed possible race condition between interrupt handler and transmit
32 * - Started to add wireless extensions, but still needs some coding
33 * - Added watchdog for better handling of transmission timeouts
34 * (hopefully this works better)
35 ********************************************************************/
37 /* To have statistics (just packets sent) define this */
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/init.h>
43 #include <linux/types.h>
44 #include <linux/fcntl.h>
45 #include <linux/interrupt.h>
46 #include <linux/ptrace.h>
47 #include <linux/ioport.h>
49 #include <linux/slab.h>
50 #include <linux/string.h>
51 #include <linux/timer.h>
52 #include <linux/errno.h>
53 #include <linux/netdevice.h>
54 #include <linux/etherdevice.h>
55 #include <linux/skbuff.h>
56 #include <linux/bitops.h>
57 #include <linux/wireless.h>
58 #include <net/iw_handler.h>
60 #include <pcmcia/cs_types.h>
61 #include <pcmcia/cs.h>
62 #include <pcmcia/cistpl.h>
63 #include <pcmcia/cisreg.h>
64 #include <pcmcia/ds.h>
65 #include <pcmcia/mem_op.h>
67 #include <asm/system.h>
71 #define NETWAVE_REGOFF 0x8000
72 /* The Netwave IO registers, offsets to iobase */
73 #define NETWAVE_REG_COR 0x0
74 #define NETWAVE_REG_CCSR 0x2
75 #define NETWAVE_REG_ASR 0x4
76 #define NETWAVE_REG_IMR 0xa
77 #define NETWAVE_REG_PMR 0xc
78 #define NETWAVE_REG_IOLOW 0x6
79 #define NETWAVE_REG_IOHI 0x7
80 #define NETWAVE_REG_IOCONTROL 0x8
81 #define NETWAVE_REG_DATA 0xf
82 /* The Netwave Extended IO registers, offsets to RamBase */
83 #define NETWAVE_EREG_ASCC 0x114
84 #define NETWAVE_EREG_RSER 0x120
85 #define NETWAVE_EREG_RSERW 0x124
86 #define NETWAVE_EREG_TSER 0x130
87 #define NETWAVE_EREG_TSERW 0x134
88 #define NETWAVE_EREG_CB 0x100
89 #define NETWAVE_EREG_SPCQ 0x154
90 #define NETWAVE_EREG_SPU 0x155
91 #define NETWAVE_EREG_LIF 0x14e
92 #define NETWAVE_EREG_ISPLQ 0x156
93 #define NETWAVE_EREG_HHC 0x158
94 #define NETWAVE_EREG_NI 0x16e
95 #define NETWAVE_EREG_MHS 0x16b
96 #define NETWAVE_EREG_TDP 0x140
97 #define NETWAVE_EREG_RDP 0x150
98 #define NETWAVE_EREG_PA 0x160
99 #define NETWAVE_EREG_EC 0x180
100 #define NETWAVE_EREG_CRBP 0x17a
101 #define NETWAVE_EREG_ARW 0x166
104 * Commands used in the extended command buffer
105 * NETWAVE_EREG_CB (0x100-0x10F)
107 #define NETWAVE_CMD_NOP 0x00
108 #define NETWAVE_CMD_SRC 0x01
109 #define NETWAVE_CMD_STC 0x02
110 #define NETWAVE_CMD_AMA 0x03
111 #define NETWAVE_CMD_DMA 0x04
112 #define NETWAVE_CMD_SAMA 0x05
113 #define NETWAVE_CMD_ER 0x06
114 #define NETWAVE_CMD_DR 0x07
115 #define NETWAVE_CMD_TL 0x08
116 #define NETWAVE_CMD_SRP 0x09
117 #define NETWAVE_CMD_SSK 0x0a
118 #define NETWAVE_CMD_SMD 0x0b
119 #define NETWAVE_CMD_SAPD 0x0c
120 #define NETWAVE_CMD_SSS 0x11
121 /* End of Command marker */
122 #define NETWAVE_CMD_EOC 0x00
124 /* ASR register bits */
125 #define NETWAVE_ASR_RXRDY 0x80
126 #define NETWAVE_ASR_TXBA 0x01
128 #define TX_TIMEOUT ((32*HZ)/100)
130 static const unsigned int imrConfRFU1 = 0x10; /* RFU interrupt mask, keep high */
131 static const unsigned int imrConfIENA = 0x02; /* Interrupt enable */
133 static const unsigned int corConfIENA = 0x01; /* Interrupt enable */
134 static const unsigned int corConfLVLREQ = 0x40; /* Keep high */
136 static const unsigned int rxConfRxEna = 0x80; /* Receive Enable */
137 static const unsigned int rxConfMAC = 0x20; /* MAC host receive mode*/
138 static const unsigned int rxConfPro = 0x10; /* Promiscuous */
139 static const unsigned int rxConfAMP = 0x08; /* Accept Multicast Packets */
140 static const unsigned int rxConfBcast = 0x04; /* Accept Broadcast Packets */
142 static const unsigned int txConfTxEna = 0x80; /* Transmit Enable */
143 static const unsigned int txConfMAC = 0x20; /* Host sends MAC mode */
144 static const unsigned int txConfEUD = 0x10; /* Enable Uni-Data packets */
145 static const unsigned int txConfKey = 0x02; /* Scramble data packets */
146 static const unsigned int txConfLoop = 0x01; /* Loopback mode */
149 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
150 you do not define PCMCIA_DEBUG at all, all the debug code will be
151 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
152 be present but disabled -- but it can then be enabled for specific
153 modules at load time with a 'pc_debug=#' option to insmod.
157 static int pc_debug = PCMCIA_DEBUG;
158 module_param(pc_debug, int, 0);
159 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
160 static char *version =
161 "netwave_cs.c 0.3.0 Thu Jul 17 14:36:02 1997 (John Markus Bjørndalen)\n";
163 #define DEBUG(n, args...)
166 /*====================================================================*/
168 /* Parameters that can be set with 'insmod' */
170 /* Choose the domain, default is 0x100 */
171 static u_int domain = 0x100;
173 /* Scramble key, range from 0x0 to 0xffff.
174 * 0x0 is no scrambling.
176 static u_int scramble_key = 0x0;
178 /* Shared memory speed, in ns. The documentation states that
179 * the card should not be read faster than every 400ns.
180 * This timing should be provided by the HBA. If it becomes a
181 * problem, try setting mem_speed to 400.
183 static int mem_speed;
185 module_param(domain, int, 0);
186 module_param(scramble_key, int, 0);
187 module_param(mem_speed, int, 0);
189 /*====================================================================*/
191 /* PCMCIA (Card Services) related functions */
192 static void netwave_release(struct pcmcia_device *link); /* Card removal */
193 static int netwave_pcmcia_config(struct pcmcia_device *arg); /* Runs after card
195 static void netwave_detach(struct pcmcia_device *p_dev); /* Destroy instance */
197 /* Hardware configuration */
198 static void netwave_doreset(unsigned int iobase, u_char __iomem *ramBase);
199 static void netwave_reset(struct net_device *dev);
201 /* Misc device stuff */
202 static int netwave_open(struct net_device *dev); /* Open the device */
203 static int netwave_close(struct net_device *dev); /* Close the device */
205 /* Packet transmission and Packet reception */
206 static int netwave_start_xmit( struct sk_buff *skb, struct net_device *dev);
207 static int netwave_rx( struct net_device *dev);
209 /* Interrupt routines */
210 static irqreturn_t netwave_interrupt(int irq, void *dev_id);
211 static void netwave_watchdog(struct net_device *);
213 /* Wireless extensions */
214 static struct iw_statistics* netwave_get_wireless_stats(struct net_device *dev);
216 static void set_multicast_list(struct net_device *dev);
219 A struct pcmcia_device structure has fields for most things that are needed
220 to keep track of a socket, but there will usually be some device
221 specific information that also needs to be kept track of. The
222 'priv' pointer in a struct pcmcia_device structure can be used to point to
223 a device-specific private data structure, like this.
225 A driver needs to provide a dev_node_t structure for each device
226 on a card. In some cases, there is only one device per card (for
227 example, ethernet cards, modems). In other cases, there may be
228 many actual or logical devices (SCSI adapters, memory cards with
229 multiple partitions). The dev_node_t structures need to be kept
230 in a linked list starting at the 'dev' field of a struct pcmcia_device
231 structure. We allocate them in the card's private data structure,
232 because they generally can't be allocated dynamically.
235 static const struct iw_handler_def netwave_handler_def;
237 #define SIOCGIPSNAP SIOCIWFIRSTPRIV + 1 /* Site Survey Snapshot */
241 typedef struct net_addr {
247 u_char struct_revision;
248 u_char roaming_state;
250 u_char sp_existsFlag;
251 u_char sp_link_quality;
252 u_char sp_max_link_quality;
253 u_char linkQualityGoodFairBoundary;
254 u_char linkQualityFairPoorBoundary;
255 u_char sp_utilization;
257 u_char sp_hotheadcount;
258 u_char roaming_condition;
262 net_addr nearByAccessPoints[MAX_ESA];
265 typedef struct netwave_private {
266 struct pcmcia_device *p_dev;
267 spinlock_t spinlock; /* Serialize access to the hardware (SMP) */
269 u_char __iomem *ramBase;
272 struct timer_list watchdog; /* To avoid blocking state */
273 struct site_survey nss;
274 struct iw_statistics iw_stats; /* Wireless stats */
278 * The Netwave card is little-endian, so won't work for big endian
281 static inline unsigned short get_uint16(u_char __iomem *staddr)
283 return readw(staddr); /* Return only 16 bits */
286 static inline short get_int16(u_char __iomem * staddr)
288 return readw(staddr);
292 * Wait until the WOC (Write Operation Complete) bit in the
293 * ASR (Adapter Status Register) is asserted.
294 * This should have aborted if it takes too long time.
296 static inline void wait_WOC(unsigned int iobase)
299 while ((inb(iobase + NETWAVE_REG_ASR) & 0x8) != 0x8) ;
302 static void netwave_snapshot(netwave_private *priv, u_char __iomem *ramBase,
303 unsigned int iobase) {
304 u_short resultBuffer;
306 /* if time since last snapshot is > 1 sec. (100 jiffies?) then take
307 * new snapshot, else return cached data. This is the recommended rate.
309 if ( jiffies - priv->lastExec > 100) {
310 /* Take site survey snapshot */
311 /*printk( KERN_DEBUG "Taking new snapshot. %ld\n", jiffies -
314 writeb(NETWAVE_CMD_SSS, ramBase + NETWAVE_EREG_CB + 0);
315 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1);
318 /* Get result and copy to cach */
319 resultBuffer = readw(ramBase + NETWAVE_EREG_CRBP);
320 copy_from_pc( &priv->nss, ramBase+resultBuffer,
321 sizeof(struct site_survey));
326 * Function netwave_get_wireless_stats (dev)
328 * Wireless extensions statistics
331 static struct iw_statistics *netwave_get_wireless_stats(struct net_device *dev)
334 unsigned int iobase = dev->base_addr;
335 netwave_private *priv = netdev_priv(dev);
336 u_char __iomem *ramBase = priv->ramBase;
337 struct iw_statistics* wstats;
339 wstats = &priv->iw_stats;
341 spin_lock_irqsave(&priv->spinlock, flags);
343 netwave_snapshot( priv, ramBase, iobase);
345 wstats->status = priv->nss.roaming_state;
346 wstats->qual.qual = readb( ramBase + NETWAVE_EREG_SPCQ);
347 wstats->qual.level = readb( ramBase + NETWAVE_EREG_ISPLQ);
348 wstats->qual.noise = readb( ramBase + NETWAVE_EREG_SPU) & 0x3f;
349 wstats->discard.nwid = 0L;
350 wstats->discard.code = 0L;
351 wstats->discard.misc = 0L;
353 spin_unlock_irqrestore(&priv->spinlock, flags);
355 return &priv->iw_stats;
358 static const struct net_device_ops netwave_netdev_ops = {
359 .ndo_open = netwave_open,
360 .ndo_stop = netwave_close,
361 .ndo_start_xmit = netwave_start_xmit,
362 .ndo_set_multicast_list = set_multicast_list,
363 .ndo_tx_timeout = netwave_watchdog,
364 .ndo_change_mtu = eth_change_mtu,
365 .ndo_set_mac_address = eth_mac_addr,
366 .ndo_validate_addr = eth_validate_addr,
370 * Function netwave_attach (void)
372 * Creates an "instance" of the driver, allocating local data
373 * structures for one device. The device is registered with Card
376 * The dev_link structure is initialized, but we don't actually
377 * configure the card at this point -- we wait until we receive a
378 * card insertion event.
380 static int netwave_probe(struct pcmcia_device *link)
382 struct net_device *dev;
383 netwave_private *priv;
385 DEBUG(0, "netwave_attach()\n");
387 /* Initialize the struct pcmcia_device structure */
388 dev = alloc_etherdev(sizeof(netwave_private));
391 priv = netdev_priv(dev);
395 /* The io structure describes IO port mapping */
396 link->io.NumPorts1 = 16;
397 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
398 /* link->io.NumPorts2 = 16;
399 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; */
400 link->io.IOAddrLines = 5;
402 /* Interrupt setup */
403 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
404 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
405 link->irq.Handler = &netwave_interrupt;
407 /* General socket configuration */
408 link->conf.Attributes = CONF_ENABLE_IRQ;
409 link->conf.IntType = INT_MEMORY_AND_IO;
410 link->conf.ConfigIndex = 1;
412 /* Netwave private struct init. link/dev/node already taken care of,
413 * other stuff zero'd - Jean II */
414 spin_lock_init(&priv->spinlock);
416 /* Netwave specific entries in the device structure */
417 dev->netdev_ops = &netwave_netdev_ops;
418 /* wireless extensions */
419 dev->wireless_handlers = &netwave_handler_def;
421 dev->watchdog_timeo = TX_TIMEOUT;
423 link->irq.Instance = dev;
425 return netwave_pcmcia_config( link);
426 } /* netwave_attach */
429 * Function netwave_detach (link)
431 * This deletes a driver "instance". The device is de-registered
432 * with Card Services. If it has been released, all local data
433 * structures are freed. Otherwise, the structures will be freed
434 * when the device is released.
436 static void netwave_detach(struct pcmcia_device *link)
438 struct net_device *dev = link->priv;
440 DEBUG(0, "netwave_detach(0x%p)\n", link);
442 netwave_release(link);
445 unregister_netdev(dev);
448 } /* netwave_detach */
451 * Wireless Handler : get protocol name
453 static int netwave_get_name(struct net_device *dev,
454 struct iw_request_info *info,
455 union iwreq_data *wrqu,
458 strcpy(wrqu->name, "Netwave");
463 * Wireless Handler : set Network ID
465 static int netwave_set_nwid(struct net_device *dev,
466 struct iw_request_info *info,
467 union iwreq_data *wrqu,
471 unsigned int iobase = dev->base_addr;
472 netwave_private *priv = netdev_priv(dev);
473 u_char __iomem *ramBase = priv->ramBase;
475 /* Disable interrupts & save flags */
476 spin_lock_irqsave(&priv->spinlock, flags);
478 if(!wrqu->nwid.disabled) {
479 domain = wrqu->nwid.value;
480 printk( KERN_DEBUG "Setting domain to 0x%x%02x\n",
481 (domain >> 8) & 0x01, domain & 0xff);
483 writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0);
484 writeb( domain & 0xff, ramBase + NETWAVE_EREG_CB + 1);
485 writeb((domain >>8 ) & 0x01,ramBase + NETWAVE_EREG_CB+2);
486 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3);
489 /* ReEnable interrupts & restore flags */
490 spin_unlock_irqrestore(&priv->spinlock, flags);
496 * Wireless Handler : get Network ID
498 static int netwave_get_nwid(struct net_device *dev,
499 struct iw_request_info *info,
500 union iwreq_data *wrqu,
503 wrqu->nwid.value = domain;
504 wrqu->nwid.disabled = 0;
505 wrqu->nwid.fixed = 1;
510 * Wireless Handler : set scramble key
512 static int netwave_set_scramble(struct net_device *dev,
513 struct iw_request_info *info,
514 union iwreq_data *wrqu,
518 unsigned int iobase = dev->base_addr;
519 netwave_private *priv = netdev_priv(dev);
520 u_char __iomem *ramBase = priv->ramBase;
522 /* Disable interrupts & save flags */
523 spin_lock_irqsave(&priv->spinlock, flags);
525 scramble_key = (key[0] << 8) | key[1];
527 writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0);
528 writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1);
529 writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2);
530 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3);
532 /* ReEnable interrupts & restore flags */
533 spin_unlock_irqrestore(&priv->spinlock, flags);
539 * Wireless Handler : get scramble key
541 static int netwave_get_scramble(struct net_device *dev,
542 struct iw_request_info *info,
543 union iwreq_data *wrqu,
546 key[1] = scramble_key & 0xff;
547 key[0] = (scramble_key>>8) & 0xff;
548 wrqu->encoding.flags = IW_ENCODE_ENABLED;
549 wrqu->encoding.length = 2;
554 * Wireless Handler : get mode
556 static int netwave_get_mode(struct net_device *dev,
557 struct iw_request_info *info,
558 union iwreq_data *wrqu,
562 wrqu->mode = IW_MODE_INFRA;
564 wrqu->mode = IW_MODE_ADHOC;
570 * Wireless Handler : get range info
572 static int netwave_get_range(struct net_device *dev,
573 struct iw_request_info *info,
574 union iwreq_data *wrqu,
577 struct iw_range *range = (struct iw_range *) extra;
580 /* Set the length (very important for backward compatibility) */
581 wrqu->data.length = sizeof(struct iw_range);
583 /* Set all the info we don't care or don't know about to zero */
584 memset(range, 0, sizeof(struct iw_range));
586 /* Set the Wireless Extension versions */
587 range->we_version_compiled = WIRELESS_EXT;
588 range->we_version_source = 9; /* Nothing for us in v10 and v11 */
590 /* Set information in the range struct */
591 range->throughput = 450 * 1000; /* don't argue on this ! */
592 range->min_nwid = 0x0000;
593 range->max_nwid = 0x01FF;
595 range->num_channels = range->num_frequency = 0;
597 range->sensitivity = 0x3F;
598 range->max_qual.qual = 255;
599 range->max_qual.level = 255;
600 range->max_qual.noise = 0;
602 range->num_bitrates = 1;
603 range->bitrate[0] = 1000000; /* 1 Mb/s */
605 range->encoding_size[0] = 2; /* 16 bits scrambling */
606 range->num_encoding_sizes = 1;
607 range->max_encoding_tokens = 1; /* Only one key possible */
613 * Wireless Private Handler : get snapshot
615 static int netwave_get_snap(struct net_device *dev,
616 struct iw_request_info *info,
617 union iwreq_data *wrqu,
621 unsigned int iobase = dev->base_addr;
622 netwave_private *priv = netdev_priv(dev);
623 u_char __iomem *ramBase = priv->ramBase;
625 /* Disable interrupts & save flags */
626 spin_lock_irqsave(&priv->spinlock, flags);
628 /* Take snapshot of environment */
629 netwave_snapshot( priv, ramBase, iobase);
630 wrqu->data.length = priv->nss.length;
631 memcpy(extra, (u_char *) &priv->nss, sizeof( struct site_survey));
633 priv->lastExec = jiffies;
635 /* ReEnable interrupts & restore flags */
636 spin_unlock_irqrestore(&priv->spinlock, flags);
642 * Structures to export the Wireless Handlers
643 * This is the stuff that are treated the wireless extensions (iwconfig)
646 static const struct iw_priv_args netwave_private_args[] = {
647 /*{ cmd, set_args, get_args, name } */
649 IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | sizeof(struct site_survey),
653 static const iw_handler netwave_handler[] =
655 NULL, /* SIOCSIWNAME */
656 netwave_get_name, /* SIOCGIWNAME */
657 netwave_set_nwid, /* SIOCSIWNWID */
658 netwave_get_nwid, /* SIOCGIWNWID */
659 NULL, /* SIOCSIWFREQ */
660 NULL, /* SIOCGIWFREQ */
661 NULL, /* SIOCSIWMODE */
662 netwave_get_mode, /* SIOCGIWMODE */
663 NULL, /* SIOCSIWSENS */
664 NULL, /* SIOCGIWSENS */
665 NULL, /* SIOCSIWRANGE */
666 netwave_get_range, /* SIOCGIWRANGE */
667 NULL, /* SIOCSIWPRIV */
668 NULL, /* SIOCGIWPRIV */
669 NULL, /* SIOCSIWSTATS */
670 NULL, /* SIOCGIWSTATS */
671 NULL, /* SIOCSIWSPY */
672 NULL, /* SIOCGIWSPY */
673 NULL, /* -- hole -- */
674 NULL, /* -- hole -- */
675 NULL, /* SIOCSIWAP */
676 NULL, /* SIOCGIWAP */
677 NULL, /* -- hole -- */
678 NULL, /* SIOCGIWAPLIST */
679 NULL, /* -- hole -- */
680 NULL, /* -- hole -- */
681 NULL, /* SIOCSIWESSID */
682 NULL, /* SIOCGIWESSID */
683 NULL, /* SIOCSIWNICKN */
684 NULL, /* SIOCGIWNICKN */
685 NULL, /* -- hole -- */
686 NULL, /* -- hole -- */
687 NULL, /* SIOCSIWRATE */
688 NULL, /* SIOCGIWRATE */
689 NULL, /* SIOCSIWRTS */
690 NULL, /* SIOCGIWRTS */
691 NULL, /* SIOCSIWFRAG */
692 NULL, /* SIOCGIWFRAG */
693 NULL, /* SIOCSIWTXPOW */
694 NULL, /* SIOCGIWTXPOW */
695 NULL, /* SIOCSIWRETRY */
696 NULL, /* SIOCGIWRETRY */
697 netwave_set_scramble, /* SIOCSIWENCODE */
698 netwave_get_scramble, /* SIOCGIWENCODE */
701 static const iw_handler netwave_private_handler[] =
703 NULL, /* SIOCIWFIRSTPRIV */
704 netwave_get_snap, /* SIOCIWFIRSTPRIV + 1 */
707 static const struct iw_handler_def netwave_handler_def =
709 .num_standard = ARRAY_SIZE(netwave_handler),
710 .num_private = ARRAY_SIZE(netwave_private_handler),
711 .num_private_args = ARRAY_SIZE(netwave_private_args),
712 .standard = (iw_handler *) netwave_handler,
713 .private = (iw_handler *) netwave_private_handler,
714 .private_args = (struct iw_priv_args *) netwave_private_args,
715 .get_wireless_stats = netwave_get_wireless_stats,
719 * Function netwave_pcmcia_config (link)
721 * netwave_pcmcia_config() is scheduled to run after a CARD_INSERTION
722 * event is received, to configure the PCMCIA socket, and to make the
723 * device available to the system.
727 #define CS_CHECK(fn, ret) \
728 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
730 static int netwave_pcmcia_config(struct pcmcia_device *link) {
731 struct net_device *dev = link->priv;
732 netwave_private *priv = netdev_priv(dev);
733 int i, j, last_ret, last_fn;
736 u_char __iomem *ramBase = NULL;
738 DEBUG(0, "netwave_pcmcia_config(0x%p)\n", link);
741 * Try allocating IO ports. This tries a few fixed addresses.
742 * If you want, you can also read the card's config table to
743 * pick addresses -- see the serial driver for an example.
745 for (i = j = 0x0; j < 0x400; j += 0x20) {
746 link->io.BasePort1 = j ^ 0x300;
747 i = pcmcia_request_io(link, &link->io);
752 cs_error(link, RequestIO, i);
757 * Now allocate an interrupt line. Note that this does not
758 * actually assign a handler to the interrupt.
760 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
763 * This actually configures the PCMCIA socket -- setting up
764 * the I/O windows and the interrupt mapping.
766 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
769 * Allocate a 32K memory window. Note that the struct pcmcia_device
770 * structure provides space for one window handle -- if your
771 * device needs several windows, you'll need to keep track of
772 * the handles in your private data structure, dev->priv.
774 DEBUG(1, "Setting mem speed of %d\n", mem_speed);
776 req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
777 req.Base = 0; req.Size = 0x8000;
778 req.AccessSpeed = mem_speed;
779 CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &link->win));
780 mem.CardOffset = 0x20000; mem.Page = 0;
781 CS_CHECK(MapMemPage, pcmcia_map_mem_page(link->win, &mem));
783 /* Store base address of the common window frame */
784 ramBase = ioremap(req.Base, 0x8000);
785 priv->ramBase = ramBase;
787 dev->irq = link->irq.AssignedIRQ;
788 dev->base_addr = link->io.BasePort1;
789 SET_NETDEV_DEV(dev, &handle_to_dev(link));
791 if (register_netdev(dev) != 0) {
792 printk(KERN_DEBUG "netwave_cs: register_netdev() failed\n");
796 strcpy(priv->node.dev_name, dev->name);
797 link->dev_node = &priv->node;
799 /* Reset card before reading physical address */
800 netwave_doreset(dev->base_addr, ramBase);
802 /* Read the ethernet address and fill in the Netwave registers. */
803 for (i = 0; i < 6; i++)
804 dev->dev_addr[i] = readb(ramBase + NETWAVE_EREG_PA + i);
806 printk(KERN_INFO "%s: Netwave: port %#3lx, irq %d, mem %lx, "
807 "id %c%c, hw_addr %pM\n",
808 dev->name, dev->base_addr, dev->irq,
810 (int) readb(ramBase+NETWAVE_EREG_NI),
811 (int) readb(ramBase+NETWAVE_EREG_NI+1),
814 /* get revision words */
815 printk(KERN_DEBUG "Netwave_reset: revision %04x %04x\n",
816 get_uint16(ramBase + NETWAVE_EREG_ARW),
817 get_uint16(ramBase + NETWAVE_EREG_ARW+2));
821 cs_error(link, last_fn, last_ret);
823 netwave_release(link);
825 } /* netwave_pcmcia_config */
828 * Function netwave_release (arg)
830 * After a card is removed, netwave_release() will unregister the net
831 * device, and release the PCMCIA configuration. If the device is
832 * still open, this will be postponed until it is closed.
834 static void netwave_release(struct pcmcia_device *link)
836 struct net_device *dev = link->priv;
837 netwave_private *priv = netdev_priv(dev);
839 DEBUG(0, "netwave_release(0x%p)\n", link);
841 pcmcia_disable_device(link);
843 iounmap(priv->ramBase);
846 static int netwave_suspend(struct pcmcia_device *link)
848 struct net_device *dev = link->priv;
851 netif_device_detach(dev);
856 static int netwave_resume(struct pcmcia_device *link)
858 struct net_device *dev = link->priv;
862 netif_device_attach(dev);
870 * Function netwave_doreset (ioBase, ramBase)
872 * Proper hardware reset of the card.
874 static void netwave_doreset(unsigned int ioBase, u_char __iomem *ramBase)
878 outb(0x80, ioBase + NETWAVE_REG_PMR);
879 writeb(0x08, ramBase + NETWAVE_EREG_ASCC); /* Bit 3 is WOC */
880 outb(0x0, ioBase + NETWAVE_REG_PMR); /* release reset */
884 * Function netwave_reset (dev)
886 * Reset and restore all of the netwave registers
888 static void netwave_reset(struct net_device *dev) {
890 netwave_private *priv = netdev_priv(dev);
891 u_char __iomem *ramBase = priv->ramBase;
892 unsigned int iobase = dev->base_addr;
894 DEBUG(0, "netwave_reset: Done with hardware reset\n");
896 priv->timeoutCounter = 0;
899 netwave_doreset(iobase, ramBase);
900 printk(KERN_DEBUG "netwave_reset: Done with hardware reset\n");
902 /* Write a NOP to check the card */
904 writeb(NETWAVE_CMD_NOP, ramBase + NETWAVE_EREG_CB + 0);
905 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1);
907 /* Set receive conf */
909 writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0);
910 writeb(rxConfRxEna + rxConfBcast, ramBase + NETWAVE_EREG_CB + 1);
911 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2);
913 /* Set transmit conf */
915 writeb(NETWAVE_CMD_STC, ramBase + NETWAVE_EREG_CB + 0);
916 writeb(txConfTxEna, ramBase + NETWAVE_EREG_CB + 1);
917 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2);
919 /* Now set the MU Domain */
920 printk(KERN_DEBUG "Setting domain to 0x%x%02x\n", (domain >> 8) & 0x01, domain & 0xff);
922 writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0);
923 writeb(domain & 0xff, ramBase + NETWAVE_EREG_CB + 1);
924 writeb((domain>>8) & 0x01, ramBase + NETWAVE_EREG_CB + 2);
925 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3);
927 /* Set scramble key */
928 printk(KERN_DEBUG "Setting scramble key to 0x%x\n", scramble_key);
930 writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0);
931 writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1);
932 writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2);
933 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3);
935 /* Enable interrupts, bit 4 high to keep unused
936 * source from interrupting us, bit 2 high to
937 * set interrupt enable, 567 to enable TxDN,
941 outb(imrConfIENA+imrConfRFU1, iobase + NETWAVE_REG_IMR);
943 /* Hent 4 bytes fra 0x170. Skal vaere 0a,29,88,36
945 * skriv 80 til d000:3688
946 * sjekk om det ble 80
949 /* Enable Receiver */
951 writeb(NETWAVE_CMD_ER, ramBase + NETWAVE_EREG_CB + 0);
952 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1);
954 /* Set the IENA bit in COR */
956 outb(corConfIENA + corConfLVLREQ, iobase + NETWAVE_REG_COR);
960 * Function netwave_hw_xmit (data, len, dev)
962 static int netwave_hw_xmit(unsigned char* data, int len,
963 struct net_device* dev) {
965 unsigned int TxFreeList,
971 netwave_private *priv = netdev_priv(dev);
972 u_char __iomem * ramBase = priv->ramBase;
973 unsigned int iobase = dev->base_addr;
975 /* Disable interrupts & save flags */
976 spin_lock_irqsave(&priv->spinlock, flags);
978 /* Check if there are transmit buffers available */
980 if ((inb(iobase+NETWAVE_REG_ASR) & NETWAVE_ASR_TXBA) == 0) {
981 /* No buffers available */
982 printk(KERN_DEBUG "netwave_hw_xmit: %s - no xmit buffers available.\n",
984 spin_unlock_irqrestore(&priv->spinlock, flags);
988 dev->stats.tx_bytes += len;
990 DEBUG(3, "Transmitting with SPCQ %x SPU %x LIF %x ISPLQ %x\n",
991 readb(ramBase + NETWAVE_EREG_SPCQ),
992 readb(ramBase + NETWAVE_EREG_SPU),
993 readb(ramBase + NETWAVE_EREG_LIF),
994 readb(ramBase + NETWAVE_EREG_ISPLQ));
996 /* Now try to insert it into the adapters free memory */
998 TxFreeList = get_uint16(ramBase + NETWAVE_EREG_TDP);
999 MaxData = get_uint16(ramBase + NETWAVE_EREG_TDP+2);
1000 DataOffset = get_uint16(ramBase + NETWAVE_EREG_TDP+4);
1002 DEBUG(3, "TxFreeList %x, MaxData %x, DataOffset %x\n",
1003 TxFreeList, MaxData, DataOffset);
1005 /* Copy packet to the adapter fragment buffers */
1006 curBuff = TxFreeList;
1008 while (tmpcount < len) {
1009 int tmplen = len - tmpcount;
1010 copy_to_pc(ramBase + curBuff + DataOffset, data + tmpcount,
1011 (tmplen < MaxData) ? tmplen : MaxData);
1012 tmpcount += MaxData;
1014 /* Advance to next buffer */
1015 curBuff = get_uint16(ramBase + curBuff);
1018 /* Now issue transmit list */
1020 writeb(NETWAVE_CMD_TL, ramBase + NETWAVE_EREG_CB + 0);
1021 writeb(len & 0xff, ramBase + NETWAVE_EREG_CB + 1);
1022 writeb((len>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2);
1023 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3);
1025 spin_unlock_irqrestore(&priv->spinlock, flags);
1029 static int netwave_start_xmit(struct sk_buff *skb, struct net_device *dev) {
1030 /* This flag indicate that the hardware can't perform a transmission.
1031 * Theoritically, NET3 check it before sending a packet to the driver,
1032 * but in fact it never do that and pool continuously.
1033 * As the watchdog will abort too long transmissions, we are quite safe...
1036 netif_stop_queue(dev);
1039 short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1040 unsigned char* buf = skb->data;
1042 if (netwave_hw_xmit( buf, length, dev) == 1) {
1043 /* Some error, let's make them call us another time? */
1044 netif_start_queue(dev);
1046 dev->trans_start = jiffies;
1051 } /* netwave_start_xmit */
1054 * Function netwave_interrupt (irq, dev_id)
1056 * This function is the interrupt handler for the Netwave card. This
1057 * routine will be called whenever:
1058 * 1. A packet is received.
1059 * 2. A packet has successfully been transferred and the unit is
1060 * ready to transmit another packet.
1061 * 3. A command has completed execution.
1063 static irqreturn_t netwave_interrupt(int irq, void* dev_id)
1065 unsigned int iobase;
1066 u_char __iomem *ramBase;
1067 struct net_device *dev = (struct net_device *)dev_id;
1068 struct netwave_private *priv = netdev_priv(dev);
1069 struct pcmcia_device *link = priv->p_dev;
1072 if (!netif_device_present(dev))
1075 iobase = dev->base_addr;
1076 ramBase = priv->ramBase;
1078 /* Now find what caused the interrupt, check while interrupts ready */
1079 for (i = 0; i < 10; i++) {
1083 if (!(inb(iobase+NETWAVE_REG_CCSR) & 0x02))
1084 break; /* None of the interrupt sources asserted (normal exit) */
1086 status = inb(iobase + NETWAVE_REG_ASR);
1088 if (!pcmcia_dev_present(link)) {
1089 DEBUG(1, "netwave_interrupt: Interrupt with status 0x%x "
1090 "from removed or suspended card!\n", status);
1095 if (status & 0x80) {
1097 /* wait_WOC(iobase); */
1098 /* RxRdy cannot be reset directly by the host */
1101 if (status & 0x40) {
1104 rser = readb(ramBase + NETWAVE_EREG_RSER);
1107 ++dev->stats.rx_dropped;
1108 ++dev->stats.rx_crc_errors;
1111 ++dev->stats.rx_frame_errors;
1113 /* Clear the RxErr bit in RSER. RSER+4 is the
1114 * write part. Also clear the RxCRC (0x04) and
1115 * RxBig (0x02) bits if present */
1117 writeb(0x40 | (rser & 0x06), ramBase + NETWAVE_EREG_RSER + 4);
1119 /* Write bit 6 high to ASCC to clear RxErr in ASR,
1120 * WOC must be set first!
1123 writeb(0x40, ramBase + NETWAVE_EREG_ASCC);
1125 /* Remember to count up dev->stats on error packets */
1126 ++dev->stats.rx_errors;
1129 if (status & 0x20) {
1132 txStatus = readb(ramBase + NETWAVE_EREG_TSER);
1133 DEBUG(3, "Transmit done. TSER = %x id %x\n",
1134 txStatus, readb(ramBase + NETWAVE_EREG_TSER + 1));
1136 if (txStatus & 0x20) {
1137 /* Transmitting was okay, clear bits */
1139 writeb(0x2f, ramBase + NETWAVE_EREG_TSER + 4);
1140 ++dev->stats.tx_packets;
1143 if (txStatus & 0xd0) {
1144 if (txStatus & 0x80) {
1145 ++dev->stats.collisions; /* Because of /proc/net/dev*/
1146 /* ++dev->stats.tx_aborted_errors; */
1147 /* printk("Collision. %ld\n", jiffies - dev->trans_start); */
1149 if (txStatus & 0x40)
1150 ++dev->stats.tx_carrier_errors;
1151 /* 0x80 TxGU Transmit giveup - nine times and no luck
1152 * 0x40 TxNOAP No access point. Discarded packet.
1153 * 0x10 TxErr Transmit error. Always set when
1154 * TxGU and TxNOAP is set. (Those are the only ones
1157 DEBUG(3, "netwave_interrupt: TxDN with error status %x\n",
1160 /* Clear out TxGU, TxNOAP, TxErr and TxTrys */
1162 writeb(0xdf & txStatus, ramBase+NETWAVE_EREG_TSER+4);
1163 ++dev->stats.tx_errors;
1165 DEBUG(3, "New status is TSER %x ASR %x\n",
1166 readb(ramBase + NETWAVE_EREG_TSER),
1167 inb(iobase + NETWAVE_REG_ASR));
1169 netif_wake_queue(dev);
1171 /* TxBA, this would trigger on all error packets received */
1172 /* if (status & 0x01) {
1173 DEBUG(4, "Transmit buffers available, %x\n", status);
1177 /* Handled if we looped at least one time - Jean II */
1178 return IRQ_RETVAL(i);
1179 } /* netwave_interrupt */
1182 * Function netwave_watchdog (a)
1184 * Watchdog : when we start a transmission, we set a timer in the
1185 * kernel. If the transmission complete, this timer is disabled. If
1186 * it expire, we reset the card.
1189 static void netwave_watchdog(struct net_device *dev) {
1191 DEBUG(1, "%s: netwave_watchdog: watchdog timer expired\n", dev->name);
1193 dev->trans_start = jiffies;
1194 netif_wake_queue(dev);
1195 } /* netwave_watchdog */
1197 static int netwave_rx(struct net_device *dev)
1199 netwave_private *priv = netdev_priv(dev);
1200 u_char __iomem *ramBase = priv->ramBase;
1201 unsigned int iobase = dev->base_addr;
1203 struct sk_buff *skb = NULL;
1204 unsigned int curBuffer,
1208 int dataCount, dataOffset;
1212 DEBUG(3, "xinw_rx: Receiving ... \n");
1214 /* Receive max 10 packets for now. */
1215 for (i = 0; i < 10; i++) {
1218 rxStatus = readb(ramBase + NETWAVE_EREG_RSER);
1219 if ( !( rxStatus & 0x80)) /* No more packets */
1222 /* Check if multicast/broadcast or other */
1223 /* multicast = (rxStatus & 0x20); */
1225 /* The receive list pointer and length of the packet */
1227 rcvLen = get_int16( ramBase + NETWAVE_EREG_RDP);
1228 rcvList = get_uint16( ramBase + NETWAVE_EREG_RDP + 2);
1231 printk(KERN_DEBUG "netwave_rx: Receive packet with len %d\n",
1236 skb = dev_alloc_skb(rcvLen+5);
1238 DEBUG(1, "netwave_rx: Could not allocate an sk_buff of "
1239 "length %d\n", rcvLen);
1240 ++dev->stats.rx_dropped;
1241 /* Tell the adapter to skip the packet */
1243 writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0);
1244 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1);
1248 skb_reserve( skb, 2); /* Align IP on 16 byte */
1249 skb_put( skb, rcvLen);
1251 /* Copy packet fragments to the skb data area */
1252 ptr = (u_char*) skb->data;
1253 curBuffer = rcvList;
1255 while ( tmpcount < rcvLen) {
1256 /* Get length and offset of current buffer */
1257 dataCount = get_uint16( ramBase+curBuffer+2);
1258 dataOffset = get_uint16( ramBase+curBuffer+4);
1260 copy_from_pc( ptr + tmpcount,
1261 ramBase+curBuffer+dataOffset, dataCount);
1263 tmpcount += dataCount;
1265 /* Point to next buffer */
1266 curBuffer = get_uint16(ramBase + curBuffer);
1269 skb->protocol = eth_type_trans(skb,dev);
1270 /* Queue packet for network layer */
1273 dev->stats.rx_packets++;
1274 dev->stats.rx_bytes += rcvLen;
1276 /* Got the packet, tell the adapter to skip it */
1278 writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0);
1279 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1);
1280 DEBUG(3, "Packet reception ok\n");
1285 static int netwave_open(struct net_device *dev) {
1286 netwave_private *priv = netdev_priv(dev);
1287 struct pcmcia_device *link = priv->p_dev;
1289 DEBUG(1, "netwave_open: starting.\n");
1291 if (!pcmcia_dev_present(link))
1296 netif_start_queue(dev);
1302 static int netwave_close(struct net_device *dev) {
1303 netwave_private *priv = netdev_priv(dev);
1304 struct pcmcia_device *link = priv->p_dev;
1306 DEBUG(1, "netwave_close: finishing.\n");
1309 netif_stop_queue(dev);
1314 static struct pcmcia_device_id netwave_ids[] = {
1315 PCMCIA_DEVICE_PROD_ID12("Xircom", "CreditCard Netwave", 0x2e3ee845, 0x54e28a28),
1318 MODULE_DEVICE_TABLE(pcmcia, netwave_ids);
1320 static struct pcmcia_driver netwave_driver = {
1321 .owner = THIS_MODULE,
1323 .name = "netwave_cs",
1325 .probe = netwave_probe,
1326 .remove = netwave_detach,
1327 .id_table = netwave_ids,
1328 .suspend = netwave_suspend,
1329 .resume = netwave_resume,
1332 static int __init init_netwave_cs(void)
1334 return pcmcia_register_driver(&netwave_driver);
1337 static void __exit exit_netwave_cs(void)
1339 pcmcia_unregister_driver(&netwave_driver);
1342 module_init(init_netwave_cs);
1343 module_exit(exit_netwave_cs);
1345 /* Set or clear the multicast filter for this adaptor.
1346 num_addrs == -1 Promiscuous mode, receive all packets
1347 num_addrs == 0 Normal mode, clear multicast list
1348 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1349 best-effort filtering.
1351 static void set_multicast_list(struct net_device *dev)
1353 unsigned int iobase = dev->base_addr;
1354 netwave_private *priv = netdev_priv(dev);
1355 u_char __iomem * ramBase = priv->ramBase;
1361 if (old != dev->mc_count) {
1362 old = dev->mc_count;
1363 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1364 dev->name, dev->mc_count);
1369 if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
1370 /* Multicast Mode */
1371 rcvMode = rxConfRxEna + rxConfAMP + rxConfBcast;
1372 } else if (dev->flags & IFF_PROMISC) {
1373 /* Promiscous mode */
1374 rcvMode = rxConfRxEna + rxConfPro + rxConfAMP + rxConfBcast;
1377 rcvMode = rxConfRxEna + rxConfBcast;
1380 /* printk("netwave set_multicast_list: rcvMode to %x\n", rcvMode);*/
1381 /* Now set receive mode */
1383 writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0);
1384 writeb(rcvMode, ramBase + NETWAVE_EREG_CB + 1);
1385 writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2);
1387 MODULE_LICENSE("GPL");