--- zzzz-none-000/linux-2.4.17/drivers/net/pcmcia/netwave_cs.c 2001-12-21 17:41:54.000000000 +0000 +++ sangam-fb-322/linux-2.4.17/drivers/net/pcmcia/netwave_cs.c 2004-11-24 13:23:31.000000000 +0000 @@ -1,1601 +1,1601 @@ -/********************************************************************* - * - * Filename: netwave_cs.c - * Version: 0.4.1 - * Description: Netwave AirSurfer Wireless LAN PC Card driver - * Status: Experimental. - * Authors: John Markus Bjørndalen - * Dag Brattli - * David Hinds - * Created at: A long time ago! - * Modified at: Mon Nov 10 11:54:37 1997 - * Modified by: Dag Brattli - * - * Copyright (c) 1997 University of Tromsø, Norway - * - * Revision History: - * - * 08-Nov-97 15:14:47 John Markus Bjørndalen - * - Fixed some bugs in netwave_rx and cleaned it up a bit. - * (One of the bugs would have destroyed packets when receiving - * multiple packets per interrupt). - * - Cleaned up parts of newave_hw_xmit. - * - A few general cleanups. - * 24-Oct-97 13:17:36 Dag Brattli - * - Fixed netwave_rx receive function (got updated docs) - * Others: - * - Changed name from xircnw to netwave, take a look at - * http://www.netwave-wireless.com - * - Some reorganizing of the code - * - Removed possible race condition between interrupt handler and transmit - * function - * - Started to add wireless extensions, but still needs some coding - * - Added watchdog for better handling of transmission timeouts - * (hopefully this works better) - ********************************************************************/ - -/* To have statistics (just packets sent) define this */ -#undef NETWAVE_STATS - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#ifdef CONFIG_NET_PCMCIA_RADIO -#include -#endif - -#include -#include -#include -#include -#include -#include -#include - -#define NETWAVE_REGOFF 0x8000 -/* The Netwave IO registers, offsets to iobase */ -#define NETWAVE_REG_COR 0x0 -#define NETWAVE_REG_CCSR 0x2 -#define NETWAVE_REG_ASR 0x4 -#define NETWAVE_REG_IMR 0xa -#define NETWAVE_REG_PMR 0xc -#define NETWAVE_REG_IOLOW 0x6 -#define NETWAVE_REG_IOHI 0x7 -#define NETWAVE_REG_IOCONTROL 0x8 -#define NETWAVE_REG_DATA 0xf -/* The Netwave Extended IO registers, offsets to RamBase */ -#define NETWAVE_EREG_ASCC 0x114 -#define NETWAVE_EREG_RSER 0x120 -#define NETWAVE_EREG_RSERW 0x124 -#define NETWAVE_EREG_TSER 0x130 -#define NETWAVE_EREG_TSERW 0x134 -#define NETWAVE_EREG_CB 0x100 -#define NETWAVE_EREG_SPCQ 0x154 -#define NETWAVE_EREG_SPU 0x155 -#define NETWAVE_EREG_LIF 0x14e -#define NETWAVE_EREG_ISPLQ 0x156 -#define NETWAVE_EREG_HHC 0x158 -#define NETWAVE_EREG_NI 0x16e -#define NETWAVE_EREG_MHS 0x16b -#define NETWAVE_EREG_TDP 0x140 -#define NETWAVE_EREG_RDP 0x150 -#define NETWAVE_EREG_PA 0x160 -#define NETWAVE_EREG_EC 0x180 -#define NETWAVE_EREG_CRBP 0x17a -#define NETWAVE_EREG_ARW 0x166 - -/* - * Commands used in the extended command buffer - * NETWAVE_EREG_CB (0x100-0x10F) - */ -#define NETWAVE_CMD_NOP 0x00 -#define NETWAVE_CMD_SRC 0x01 -#define NETWAVE_CMD_STC 0x02 -#define NETWAVE_CMD_AMA 0x03 -#define NETWAVE_CMD_DMA 0x04 -#define NETWAVE_CMD_SAMA 0x05 -#define NETWAVE_CMD_ER 0x06 -#define NETWAVE_CMD_DR 0x07 -#define NETWAVE_CMD_TL 0x08 -#define NETWAVE_CMD_SRP 0x09 -#define NETWAVE_CMD_SSK 0x0a -#define NETWAVE_CMD_SMD 0x0b -#define NETWAVE_CMD_SAPD 0x0c -#define NETWAVE_CMD_SSS 0x11 -/* End of Command marker */ -#define NETWAVE_CMD_EOC 0x00 - -/* ASR register bits */ -#define NETWAVE_ASR_RXRDY 0x80 -#define NETWAVE_ASR_TXBA 0x01 - -#define TX_TIMEOUT ((32*HZ)/100) - -static const unsigned int imrConfRFU1 = 0x10; /* RFU interrupt mask, keep high */ -static const unsigned int imrConfIENA = 0x02; /* Interrupt enable */ - -static const unsigned int corConfIENA = 0x01; /* Interrupt enable */ -static const unsigned int corConfLVLREQ = 0x40; /* Keep high */ - -static const unsigned int rxConfRxEna = 0x80; /* Receive Enable */ -static const unsigned int rxConfMAC = 0x20; /* MAC host receive mode*/ -static const unsigned int rxConfPro = 0x10; /* Promiscuous */ -static const unsigned int rxConfAMP = 0x08; /* Accept Multicast Packets */ -static const unsigned int rxConfBcast = 0x04; /* Accept Broadcast Packets */ - -static const unsigned int txConfTxEna = 0x80; /* Transmit Enable */ -static const unsigned int txConfMAC = 0x20; /* Host sends MAC mode */ -static const unsigned int txConfEUD = 0x10; /* Enable Uni-Data packets */ -static const unsigned int txConfKey = 0x02; /* Scramble data packets */ -static const unsigned int txConfLoop = 0x01; /* Loopback mode */ - -/* - All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If - you do not define PCMCIA_DEBUG at all, all the debug code will be - left out. If you compile with PCMCIA_DEBUG=0, the debug code will - be present but disabled -- but it can then be enabled for specific - modules at load time with a 'pc_debug=#' option to insmod. -*/ - -#ifdef PCMCIA_DEBUG -static int pc_debug = PCMCIA_DEBUG; -MODULE_PARM(pc_debug, "i"); -#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) -static char *version = -"netwave_cs.c 0.3.0 Thu Jul 17 14:36:02 1997 (John Markus Bjørndalen)\n"; -#else -#define DEBUG(n, args...) -#endif - -static dev_info_t dev_info = "netwave_cs"; - -/*====================================================================*/ - -/* Parameters that can be set with 'insmod' */ - -/* Choose the domain, default is 0x100 */ -static u_int domain = 0x100; - -/* Scramble key, range from 0x0 to 0xffff. - * 0x0 is no scrambling. - */ -static u_int scramble_key = 0x0; - -/* Shared memory speed, in ns. The documentation states that - * the card should not be read faster than every 400ns. - * This timing should be provided by the HBA. If it becomes a - * problem, try setting mem_speed to 400. - */ -static int mem_speed; - -/* Bit map of interrupts to choose from */ -/* This means pick from 15, 14, 12, 11, 10, 9, 7, 5, 4, and 3 */ -static u_int irq_mask = 0xdeb8; -static int irq_list[4] = { -1 }; - -MODULE_PARM(domain, "i"); -MODULE_PARM(scramble_key, "i"); -MODULE_PARM(mem_speed, "i"); -MODULE_PARM(irq_mask, "i"); -MODULE_PARM(irq_list, "1-4i"); - -MODULE_LICENSE("GPL"); - -/*====================================================================*/ - -/* PCMCIA (Card Services) related functions */ -static void netwave_release(u_long arg); /* Card removal */ -static int netwave_event(event_t event, int priority, - event_callback_args_t *args); -static void netwave_pcmcia_config(dev_link_t *arg); /* Runs after card - insertion */ -static dev_link_t *netwave_attach(void); /* Create instance */ -static void netwave_detach(dev_link_t *); /* Destroy instance */ -static void netwave_flush_stale_links(void); /* Destroy all staled instances */ - -/* Hardware configuration */ -static void netwave_doreset(ioaddr_t iobase, u_char* ramBase); -static void netwave_reset(struct net_device *dev); - -/* Misc device stuff */ -static int netwave_open(struct net_device *dev); /* Open the device */ -static int netwave_close(struct net_device *dev); /* Close the device */ -static int netwave_config(struct net_device *dev, struct ifmap *map); - -/* Packet transmission and Packet reception */ -static int netwave_start_xmit( struct sk_buff *skb, struct net_device *dev); -static int netwave_rx( struct net_device *dev); - -/* Interrupt routines */ -static void netwave_interrupt(int irq, void *dev_id, struct pt_regs *regs); -static void netwave_watchdog(struct net_device *); - -/* Statistics */ -static void update_stats(struct net_device *dev); -static struct net_device_stats *netwave_get_stats(struct net_device *dev); - -/* Wireless extensions */ -#ifdef WIRELESS_EXT -static struct iw_statistics* netwave_get_wireless_stats(struct net_device *dev); -#endif -static int netwave_ioctl(struct net_device *, struct ifreq *, int); - -static void set_multicast_list(struct net_device *dev); - -/* - A linked list of "instances" of the skeleton device. Each actual - PCMCIA card corresponds to one device instance, and is described - by one dev_link_t structure (defined in ds.h). - - You may not want to use a linked list for this -- for example, the - memory card driver uses an array of dev_link_t pointers, where minor - device numbers are used to derive the corresponding array index. -*/ -static dev_link_t *dev_list; - -/* - A dev_link_t structure has fields for most things that are needed - to keep track of a socket, but there will usually be some device - specific information that also needs to be kept track of. The - 'priv' pointer in a dev_link_t structure can be used to point to - a device-specific private data structure, like this. - - A driver needs to provide a dev_node_t structure for each device - on a card. In some cases, there is only one device per card (for - example, ethernet cards, modems). In other cases, there may be - many actual or logical devices (SCSI adapters, memory cards with - multiple partitions). The dev_node_t structures need to be kept - in a linked list starting at the 'dev' field of a dev_link_t - structure. We allocate them in the card's private data structure, - because they generally can't be allocated dynamically. -*/ - -/* Wireless Extension Backward compatibility - Jean II - * If the new wireless device private ioctl range is not defined, - * default to standard device private ioctl range */ -#ifndef SIOCIWFIRSTPRIV -#define SIOCIWFIRSTPRIV SIOCDEVPRIVATE -#endif /* SIOCIWFIRSTPRIV */ - -#define SIOCGIPSNAP SIOCIWFIRSTPRIV /* Site Survey Snapshot */ -/*#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1*/ - -#define MAX_ESA 10 - -typedef struct net_addr { - u_char addr48[6]; -} net_addr; - -struct site_survey { - u_short length; - u_char struct_revision; - u_char roaming_state; - - u_char sp_existsFlag; - u_char sp_link_quality; - u_char sp_max_link_quality; - u_char linkQualityGoodFairBoundary; - u_char linkQualityFairPoorBoundary; - u_char sp_utilization; - u_char sp_goodness; - u_char sp_hotheadcount; - u_char roaming_condition; - - net_addr sp; - u_char numAPs; - net_addr nearByAccessPoints[MAX_ESA]; -}; - -typedef struct netwave_private { - dev_link_t link; - struct net_device dev; - dev_node_t node; - u_char *ramBase; - int timeoutCounter; - int lastExec; - struct timer_list watchdog; /* To avoid blocking state */ - struct site_survey nss; - struct net_device_stats stats; -#ifdef WIRELESS_EXT - struct iw_statistics iw_stats; /* Wireless stats */ -#endif -} netwave_private; - -#ifdef NETWAVE_STATS -static struct net_device_stats *netwave_get_stats(struct net_device *dev); -#endif - -/* - * The Netwave card is little-endian, so won't work for big endian - * systems. - */ -static inline unsigned short get_uint16(u_char* staddr) -{ - return readw(staddr); /* Return only 16 bits */ -} - -static inline short get_int16(u_char* staddr) -{ - return readw(staddr); -} - -/**************************************************************************/ - -static void cs_error(client_handle_t handle, int func, int ret) -{ - error_info_t err = { func, ret }; - CardServices(ReportError, handle, &err); -} - -/* - * Wait until the WOC (Write Operation Complete) bit in the - * ASR (Adapter Status Register) is asserted. - * This should have aborted if it takes too long time. - */ -static inline void wait_WOC(unsigned int iobase) -{ - /* Spin lock */ - while ((inb(iobase + NETWAVE_REG_ASR) & 0x8) != 0x8) ; -} - -#ifdef WIRELESS_EXT -static void netwave_snapshot(netwave_private *priv, u_char *ramBase, - ioaddr_t iobase) { - u_short resultBuffer; - - /* if time since last snapshot is > 1 sec. (100 jiffies?) then take - * new snapshot, else return cached data. This is the recommended rate. - */ - if ( jiffies - priv->lastExec > 100) { - /* Take site survey snapshot */ - /*printk( KERN_DEBUG "Taking new snapshot. %ld\n", jiffies - - priv->lastExec); */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_SSS, ramBase + NETWAVE_EREG_CB + 0); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); - wait_WOC(iobase); - - /* Get result and copy to cach */ - resultBuffer = readw(ramBase + NETWAVE_EREG_CRBP); - copy_from_pc( &priv->nss, ramBase+resultBuffer, - sizeof(struct site_survey)); - } -} -#endif - -#ifdef WIRELESS_EXT -/* - * Function netwave_get_wireless_stats (dev) - * - * Wireless extensions statistics - * - */ -static struct iw_statistics *netwave_get_wireless_stats(struct net_device *dev) -{ - unsigned long flags; - ioaddr_t iobase = dev->base_addr; - netwave_private *priv = (netwave_private *) dev->priv; - u_char *ramBase = priv->ramBase; - struct iw_statistics* wstats; - - wstats = &priv->iw_stats; - - save_flags(flags); - cli(); - - netwave_snapshot( priv, ramBase, iobase); - - wstats->status = priv->nss.roaming_state; - wstats->qual.qual = readb( ramBase + NETWAVE_EREG_SPCQ); - wstats->qual.level = readb( ramBase + NETWAVE_EREG_ISPLQ); - wstats->qual.noise = readb( ramBase + NETWAVE_EREG_SPU) & 0x3f; - wstats->discard.nwid = 0L; - wstats->discard.code = 0L; - wstats->discard.misc = 0L; - - restore_flags(flags); - - return &priv->iw_stats; -} -#endif - -/* - * Function netwave_attach (void) - * - * Creates an "instance" of the driver, allocating local data - * structures for one device. The device is registered with Card - * Services. - * - * The dev_link structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a - * card insertion event. - */ -static dev_link_t *netwave_attach(void) -{ - client_reg_t client_reg; - dev_link_t *link; - struct net_device *dev; - netwave_private *priv; - int i, ret; - - DEBUG(0, "netwave_attach()\n"); - - /* Perform some cleanup */ - netwave_flush_stale_links(); - - /* Initialize the dev_link_t structure */ - priv = kmalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) return NULL; - memset(priv, 0, sizeof(*priv)); - link = &priv->link; dev = &priv->dev; - link->priv = dev->priv = priv; - link->release.function = &netwave_release; - link->release.data = (u_long)link; - - /* The io structure describes IO port mapping */ - link->io.NumPorts1 = 16; - link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; - /* link->io.NumPorts2 = 16; - link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; */ - link->io.IOAddrLines = 5; - - /* Interrupt setup */ - link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; - link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; - if (irq_list[0] == -1) - link->irq.IRQInfo2 = irq_mask; - else - for (i = 0; i < 4; i++) - link->irq.IRQInfo2 |= 1 << irq_list[i]; - link->irq.Handler = &netwave_interrupt; - - /* General socket configuration */ - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.Vcc = 50; - link->conf.IntType = INT_MEMORY_AND_IO; - link->conf.ConfigIndex = 1; - link->conf.Present = PRESENT_OPTION; - - /* Netwave specific entries in the device structure */ - dev->hard_start_xmit = &netwave_start_xmit; - dev->set_config = &netwave_config; - dev->get_stats = &netwave_get_stats; - dev->set_multicast_list = &set_multicast_list; - /* wireless extensions */ -#ifdef WIRELESS_EXT - dev->get_wireless_stats = &netwave_get_wireless_stats; -#endif - dev->do_ioctl = &netwave_ioctl; - - dev->tx_timeout = &netwave_watchdog; - dev->watchdog_timeo = TX_TIMEOUT; - - ether_setup(dev); - dev->open = &netwave_open; - dev->stop = &netwave_close; - link->irq.Instance = dev; - - /* Register with Card Services */ - link->next = dev_list; - dev_list = link; - client_reg.dev_info = &dev_info; - client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; - client_reg.EventMask = - CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | - CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | - CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; - client_reg.event_handler = &netwave_event; - client_reg.Version = 0x0210; - client_reg.event_callback_args.client_data = link; - ret = CardServices(RegisterClient, &link->handle, &client_reg); - if (ret != 0) { - cs_error(link->handle, RegisterClient, ret); - netwave_detach(link); - return NULL; - } - - return link; -} /* netwave_attach */ - -/* - * Function netwave_detach (link) - * - * This deletes a driver "instance". The device is de-registered - * with Card Services. If it has been released, all local data - * structures are freed. Otherwise, the structures will be freed - * when the device is released. - */ -static void netwave_detach(dev_link_t *link) -{ - netwave_private *priv = link->priv; - dev_link_t **linkp; - - DEBUG(0, "netwave_detach(0x%p)\n", link); - - /* - If the device is currently configured and active, we won't - actually delete it yet. Instead, it is marked so that when - the release() function is called, that will trigger a proper - detach(). - */ - del_timer(&link->release); - if (link->state & DEV_CONFIG) { - netwave_release((u_long) link); - if (link->state & DEV_STALE_CONFIG) { - DEBUG(1, "netwave_cs: detach postponed, '%s' still " - "locked\n", link->dev->dev_name); - link->state |= DEV_STALE_LINK; - return; - } - } - - /* Break the link with Card Services */ - if (link->handle) - CardServices(DeregisterClient, link->handle); - - /* Locate device structure */ - for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) - if (*linkp == link) break; - if (*linkp == NULL) - { - DEBUG(1, "netwave_cs: detach fail, '%s' not in list\n", - link->dev->dev_name); - return; - } - - /* Unlink device structure, free pieces */ - *linkp = link->next; - if (link->dev) - unregister_netdev(&priv->dev); - kfree(priv); - -} /* netwave_detach */ - -/* - * Function netwave_flush_stale_links (void) - * - * This deletes all driver "instances" that need to be deleted. - * Sometimes, netwave_detach can't be performed following a call from - * cardmgr (device still open) and the device is put in a STALE_LINK - * state. - * This function is in charge of making the cleanup... - */ -static void netwave_flush_stale_links(void) -{ - dev_link_t * link; /* Current node in linked list */ - dev_link_t * next; /* Next node in linked list */ - - DEBUG(1, "netwave_flush_stale_links(0x%p)\n", dev_list); - - /* Go through the list */ - for (link = dev_list; link; link = next) { - next = link->next; - /* Check if in need of being removed */ - if(link->state & DEV_STALE_LINK) - netwave_detach(link); - } -} /* netwave_flush_stale_links */ - -/* - * Function netwave_ioctl (dev, rq, cmd) - * - * Perform ioctl : config & info stuff - * This is the stuff that are treated the wireless extensions (iwconfig) - * - */ -static int netwave_ioctl(struct net_device *dev, /* ioctl device */ - struct ifreq *rq, /* Data passed */ - int cmd) /* Ioctl number */ -{ - unsigned long flags; - int ret = 0; -#ifdef WIRELESS_EXT - ioaddr_t iobase = dev->base_addr; - netwave_private *priv = (netwave_private *) dev->priv; - u_char *ramBase = priv->ramBase; - struct iwreq *wrq = (struct iwreq *) rq; -#endif - - DEBUG(0, "%s: ->netwave_ioctl(cmd=0x%X)\n", dev->name, cmd); - - /* Disable interrupts & save flags */ - save_flags(flags); - cli(); - - /* Look what is the request */ - switch(cmd) { - /* --------------- WIRELESS EXTENSIONS --------------- */ -#ifdef WIRELESS_EXT - case SIOCGIWNAME: - /* Get name */ - strcpy(wrq->u.name, "Netwave"); - break; - case SIOCSIWNWID: - /* Set domain */ -#if WIRELESS_EXT > 8 - if(!wrq->u.nwid.disabled) { - domain = wrq->u.nwid.value; -#else /* WIRELESS_EXT > 8 */ - if(wrq->u.nwid.on) { - domain = wrq->u.nwid.nwid; -#endif /* WIRELESS_EXT > 8 */ - printk( KERN_DEBUG "Setting domain to 0x%x%02x\n", - (domain >> 8) & 0x01, domain & 0xff); - wait_WOC(iobase); - writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0); - writeb( domain & 0xff, ramBase + NETWAVE_EREG_CB + 1); - writeb((domain >>8 ) & 0x01,ramBase + NETWAVE_EREG_CB+2); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); - } break; - case SIOCGIWNWID: - /* Read domain*/ -#if WIRELESS_EXT > 8 - wrq->u.nwid.value = domain; - wrq->u.nwid.disabled = 0; - wrq->u.nwid.fixed = 1; -#else /* WIRELESS_EXT > 8 */ - wrq->u.nwid.nwid = domain; - wrq->u.nwid.on = 1; -#endif /* WIRELESS_EXT > 8 */ - break; -#if WIRELESS_EXT > 8 /* Note : The API did change... */ - case SIOCGIWENCODE: - /* Get scramble key */ - if(wrq->u.encoding.pointer != (caddr_t) 0) - { - char key[2]; - key[1] = scramble_key & 0xff; - key[0] = (scramble_key>>8) & 0xff; - wrq->u.encoding.flags = IW_ENCODE_ENABLED; - wrq->u.encoding.length = 2; - if(copy_to_user(wrq->u.encoding.pointer, key, 2)) - ret = -EFAULT; - } - break; - case SIOCSIWENCODE: - /* Set scramble key */ - if(wrq->u.encoding.pointer != (caddr_t) 0) - { - char key[2]; - if(copy_from_user(key, wrq->u.encoding.pointer, 2)) - { - ret = -EFAULT; - break; - } - scramble_key = (key[0] << 8) | key[1]; - wait_WOC(iobase); - writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); - writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); - writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); - } - break; - case SIOCGIWMODE: - /* Mode of operation */ - if(domain & 0x100) - wrq->u.mode = IW_MODE_INFRA; - else - wrq->u.mode = IW_MODE_ADHOC; - break; -#else /* WIRELESS_EXT > 8 */ - case SIOCGIWENCODE: - /* Get scramble key */ - wrq->u.encoding.code = scramble_key; - wrq->u.encoding.method = 1; - break; - case SIOCSIWENCODE: - /* Set scramble key */ - scramble_key = wrq->u.encoding.code; - wait_WOC(iobase); - writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); - writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); - writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); - break; -#endif /* WIRELESS_EXT > 8 */ - case SIOCGIWRANGE: - /* Basic checking... */ - if(wrq->u.data.pointer != (caddr_t) 0) { - struct iw_range range; - - /* Set the length (very important for backward compatibility) */ - wrq->u.data.length = sizeof(struct iw_range); - - /* Set all the info we don't care or don't know about to zero */ - memset(&range, 0, sizeof(range)); - -#if WIRELESS_EXT > 10 - /* Set the Wireless Extension versions */ - range.we_version_compiled = WIRELESS_EXT; - range.we_version_source = 9; /* Nothing for us in v10 and v11 */ -#endif /* WIRELESS_EXT > 10 */ - - /* Set information in the range struct */ - range.throughput = 450 * 1000; /* don't argue on this ! */ - range.min_nwid = 0x0000; - range.max_nwid = 0x01FF; - - range.num_channels = range.num_frequency = 0; - - range.sensitivity = 0x3F; - range.max_qual.qual = 255; - range.max_qual.level = 255; - range.max_qual.noise = 0; - -#if WIRELESS_EXT > 7 - range.num_bitrates = 1; - range.bitrate[0] = 1000000; /* 1 Mb/s */ -#endif /* WIRELESS_EXT > 7 */ - -#if WIRELESS_EXT > 8 - range.encoding_size[0] = 2; /* 16 bits scrambling */ - range.num_encoding_sizes = 1; - range.max_encoding_tokens = 1; /* Only one key possible */ -#endif /* WIRELESS_EXT > 8 */ - - /* Copy structure to the user buffer */ - if(copy_to_user(wrq->u.data.pointer, &range, - sizeof(struct iw_range))) - ret = -EFAULT; - } - break; - case SIOCGIWPRIV: - /* Basic checking... */ - if(wrq->u.data.pointer != (caddr_t) 0) { - struct iw_priv_args priv[] = - { /* cmd, set_args, get_args, name */ - { SIOCGIPSNAP, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 0, - sizeof(struct site_survey), - "getsitesurvey" }, - }; - - /* Set the number of ioctl available */ - wrq->u.data.length = 1; - - /* Copy structure to the user buffer */ - if(copy_to_user(wrq->u.data.pointer, (u_char *) priv, - sizeof(priv))) - ret = -EFAULT; - } - break; - case SIOCGIPSNAP: - if(wrq->u.data.pointer != (caddr_t) 0) { - /* Take snapshot of environment */ - netwave_snapshot( priv, ramBase, iobase); - wrq->u.data.length = priv->nss.length; - /* Copy structure to the user buffer */ - if(copy_to_user(wrq->u.data.pointer, - (u_char *) &priv->nss, - sizeof( struct site_survey))) - { - printk(KERN_DEBUG "Bad buffer!\n"); - break; - } - - priv->lastExec = jiffies; - } - break; -#endif - default: - ret = -EOPNOTSUPP; - } - - /* ReEnable interrupts & restore flags */ - restore_flags(flags); - - return ret; -} - -/* - * Function netwave_pcmcia_config (link) - * - * netwave_pcmcia_config() is scheduled to run after a CARD_INSERTION - * event is received, to configure the PCMCIA socket, and to make the - * device available to the system. - * - */ - -#define CS_CHECK(fn, args...) \ -while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed - -static void netwave_pcmcia_config(dev_link_t *link) { - client_handle_t handle = link->handle; - netwave_private *priv = link->priv; - struct net_device *dev = &priv->dev; - tuple_t tuple; - cisparse_t parse; - int i, j, last_ret, last_fn; - u_char buf[64]; - win_req_t req; - memreq_t mem; - u_char *ramBase = NULL; - - DEBUG(0, "netwave_pcmcia_config(0x%p)\n", link); - - /* - This reads the card's CONFIG tuple to find its configuration - registers. - */ - tuple.Attributes = 0; - tuple.TupleData = (cisdata_t *) buf; - tuple.TupleDataMax = 64; - tuple.TupleOffset = 0; - tuple.DesiredTuple = CISTPL_CONFIG; - CS_CHECK(GetFirstTuple, handle, &tuple); - CS_CHECK(GetTupleData, handle, &tuple); - CS_CHECK(ParseTuple, handle, &tuple, &parse); - link->conf.ConfigBase = parse.config.base; - link->conf.Present = parse.config.rmask[0]; - - /* Configure card */ - link->state |= DEV_CONFIG; - - /* - * Try allocating IO ports. This tries a few fixed addresses. - * If you want, you can also read the card's config table to - * pick addresses -- see the serial driver for an example. - */ - for (i = j = 0x0; j < 0x400; j += 0x20) { - link->io.BasePort1 = j ^ 0x300; - i = CardServices(RequestIO, link->handle, &link->io); - if (i == CS_SUCCESS) break; - } - if (i != CS_SUCCESS) { - cs_error(link->handle, RequestIO, i); - goto failed; - } - - /* - * Now allocate an interrupt line. Note that this does not - * actually assign a handler to the interrupt. - */ - CS_CHECK(RequestIRQ, handle, &link->irq); - - /* - * This actually configures the PCMCIA socket -- setting up - * the I/O windows and the interrupt mapping. - */ - CS_CHECK(RequestConfiguration, handle, &link->conf); - - /* - * Allocate a 32K memory window. Note that the dev_link_t - * structure provides space for one window handle -- if your - * device needs several windows, you'll need to keep track of - * the handles in your private data structure, link->priv. - */ - DEBUG(1, "Setting mem speed of %d\n", mem_speed); - - req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_CM|WIN_ENABLE; - req.Base = 0; req.Size = 0x8000; - req.AccessSpeed = mem_speed; - link->win = (window_handle_t)link->handle; - CS_CHECK(RequestWindow, &link->win, &req); - mem.CardOffset = 0x20000; mem.Page = 0; - CS_CHECK(MapMemPage, link->win, &mem); - - /* Store base address of the common window frame */ - ramBase = ioremap(req.Base, 0x8000); - ((netwave_private*)dev->priv)->ramBase = ramBase; - - dev->irq = link->irq.AssignedIRQ; - dev->base_addr = link->io.BasePort1; - if (register_netdev(dev) != 0) { - printk(KERN_DEBUG "netwave_cs: register_netdev() failed\n"); - goto failed; - } - - strcpy(priv->node.dev_name, dev->name); - link->dev = &priv->node; - link->state &= ~DEV_CONFIG_PENDING; - - /* Reset card before reading physical address */ - netwave_doreset(dev->base_addr, ramBase); - - /* Read the ethernet address and fill in the Netwave registers. */ - for (i = 0; i < 6; i++) - dev->dev_addr[i] = readb(ramBase + NETWAVE_EREG_PA + i); - - printk(KERN_INFO "%s: Netwave: port %#3lx, irq %d, mem %lx id " - "%c%c, hw_addr ", dev->name, dev->base_addr, dev->irq, - (u_long) ramBase, (int) readb(ramBase+NETWAVE_EREG_NI), - (int) readb(ramBase+NETWAVE_EREG_NI+1)); - for (i = 0; i < 6; i++) - printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n")); - - /* get revision words */ - printk(KERN_DEBUG "Netwave_reset: revision %04x %04x\n", - get_uint16(ramBase + NETWAVE_EREG_ARW), - get_uint16(ramBase + NETWAVE_EREG_ARW+2)); - return; - -cs_failed: - cs_error(link->handle, last_fn, last_ret); -failed: - netwave_release((u_long)link); -} /* netwave_pcmcia_config */ - -/* - * Function netwave_release (arg) - * - * After a card is removed, netwave_release() will unregister the net - * device, and release the PCMCIA configuration. If the device is - * still open, this will be postponed until it is closed. - */ -static void netwave_release(u_long arg) { - dev_link_t *link = (dev_link_t *)arg; - netwave_private *priv = link->priv; - - DEBUG(0, "netwave_release(0x%p)\n", link); - - /* - If the device is currently in use, we won't release until it - is actually closed. - */ - if (link->open) { - printk(KERN_DEBUG "netwave_cs: release postponed, '%s' still open\n", - link->dev->dev_name); - link->state |= DEV_STALE_CONFIG; - return; - } - - /* Don't bother checking to see if these succeed or not */ - if (link->win) { - iounmap(priv->ramBase); - CardServices(ReleaseWindow, link->win); - } - CardServices(ReleaseConfiguration, link->handle); - CardServices(ReleaseIO, link->handle, &link->io); - CardServices(ReleaseIRQ, link->handle, &link->irq); - - link->state &= ~(DEV_CONFIG | DEV_STALE_CONFIG); - -} /* netwave_release */ - -/* - * Function netwave_event (event, priority, args) - * - * The card status event handler. Mostly, this schedules other - * stuff to run after an event is received. A CARD_REMOVAL event - * also sets some flags to discourage the net drivers from trying - * to talk to the card any more. - * - * When a CARD_REMOVAL event is received, we immediately set a flag - * to block future accesses to this device. All the functions that - * actually access the device should check this flag to make sure - * the card is still present. - * - */ -static int netwave_event(event_t event, int priority, - event_callback_args_t *args) { - dev_link_t *link = args->client_data; - netwave_private *priv = link->priv; - struct net_device *dev = &priv->dev; - - DEBUG(1, "netwave_event(0x%06x)\n", event); - - switch (event) { - case CS_EVENT_REGISTRATION_COMPLETE: - DEBUG(0, "netwave_cs: registration complete\n"); - break; - - case CS_EVENT_CARD_REMOVAL: - link->state &= ~DEV_PRESENT; - if (link->state & DEV_CONFIG) { - netif_device_detach(dev); - mod_timer(&link->release, jiffies + HZ/20); - } - break; - case CS_EVENT_CARD_INSERTION: - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; - netwave_pcmcia_config( link); - break; - case CS_EVENT_PM_SUSPEND: - link->state |= DEV_SUSPEND; - /* Fall through... */ - case CS_EVENT_RESET_PHYSICAL: - if (link->state & DEV_CONFIG) { - if (link->open) - netif_device_detach(dev); - CardServices(ReleaseConfiguration, link->handle); - } - break; - case CS_EVENT_PM_RESUME: - link->state &= ~DEV_SUSPEND; - /* Fall through... */ - case CS_EVENT_CARD_RESET: - if (link->state & DEV_CONFIG) { - CardServices(RequestConfiguration, link->handle, &link->conf); - if (link->open) { - netwave_reset(dev); - netif_device_attach(dev); - } - } - break; - } - return 0; -} /* netwave_event */ - -/* - * Function netwave_doreset (ioBase, ramBase) - * - * Proper hardware reset of the card. - */ -static void netwave_doreset(ioaddr_t ioBase, u_char* ramBase) { - /* Reset card */ - wait_WOC(ioBase); - outb(0x80, ioBase + NETWAVE_REG_PMR); - writeb(0x08, ramBase + NETWAVE_EREG_ASCC); /* Bit 3 is WOC */ - outb(0x0, ioBase + NETWAVE_REG_PMR); /* release reset */ -} - -/* - * Function netwave_reset (dev) - * - * Reset and restore all of the netwave registers - */ -static void netwave_reset(struct net_device *dev) { - /* u_char state; */ - netwave_private *priv = (netwave_private*) dev->priv; - u_char *ramBase = priv->ramBase; - ioaddr_t iobase = dev->base_addr; - - DEBUG(0, "netwave_reset: Done with hardware reset\n"); - - priv->timeoutCounter = 0; - - /* Reset card */ - netwave_doreset(iobase, ramBase); - printk(KERN_DEBUG "netwave_reset: Done with hardware reset\n"); - - /* Write a NOP to check the card */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_NOP, ramBase + NETWAVE_EREG_CB + 0); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); - - /* Set receive conf */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0); - writeb(rxConfRxEna + rxConfBcast, ramBase + NETWAVE_EREG_CB + 1); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); - - /* Set transmit conf */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_STC, ramBase + NETWAVE_EREG_CB + 0); - writeb(txConfTxEna, ramBase + NETWAVE_EREG_CB + 1); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); - - /* Now set the MU Domain */ - printk(KERN_DEBUG "Setting domain to 0x%x%02x\n", (domain >> 8) & 0x01, domain & 0xff); - wait_WOC(iobase); - writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0); - writeb(domain & 0xff, ramBase + NETWAVE_EREG_CB + 1); - writeb((domain>>8) & 0x01, ramBase + NETWAVE_EREG_CB + 2); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); - - /* Set scramble key */ - printk(KERN_DEBUG "Setting scramble key to 0x%x\n", scramble_key); - wait_WOC(iobase); - writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); - writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); - writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); - - /* Enable interrupts, bit 4 high to keep unused - * source from interrupting us, bit 2 high to - * set interrupt enable, 567 to enable TxDN, - * RxErr and RxRdy - */ - wait_WOC(iobase); - outb(imrConfIENA+imrConfRFU1, iobase + NETWAVE_REG_IMR); - - /* Hent 4 bytes fra 0x170. Skal vaere 0a,29,88,36 - * waitWOC - * skriv 80 til d000:3688 - * sjekk om det ble 80 - */ - - /* Enable Receiver */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_ER, ramBase + NETWAVE_EREG_CB + 0); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); - - /* Set the IENA bit in COR */ - wait_WOC(iobase); - outb(corConfIENA + corConfLVLREQ, iobase + NETWAVE_REG_COR); -} - -/* - * Function netwave_config (dev, map) - * - * Configure device, this work is done by netwave_pcmcia_config when a - * card is inserted - */ -static int netwave_config(struct net_device *dev, struct ifmap *map) { - return 0; -} - -/* - * Function netwave_hw_xmit (data, len, dev) - */ -static int netwave_hw_xmit(unsigned char* data, int len, - struct net_device* dev) { - unsigned long flags; - unsigned int TxFreeList, - curBuff, - MaxData, - DataOffset; - int tmpcount; - - netwave_private *priv = (netwave_private *) dev->priv; - u_char* ramBase = priv->ramBase; - ioaddr_t iobase = dev->base_addr; - - /* Disable interrupts & save flags */ - save_flags(flags); - cli(); - - /* Check if there are transmit buffers available */ - wait_WOC(iobase); - if ((inb(iobase+NETWAVE_REG_ASR) & NETWAVE_ASR_TXBA) == 0) { - /* No buffers available */ - printk(KERN_DEBUG "netwave_hw_xmit: %s - no xmit buffers available.\n", - dev->name); - restore_flags(flags); - return 1; - } - - priv->stats.tx_bytes += len; - - DEBUG(3, "Transmitting with SPCQ %x SPU %x LIF %x ISPLQ %x\n", - readb(ramBase + NETWAVE_EREG_SPCQ), - readb(ramBase + NETWAVE_EREG_SPU), - readb(ramBase + NETWAVE_EREG_LIF), - readb(ramBase + NETWAVE_EREG_ISPLQ)); - - /* Now try to insert it into the adapters free memory */ - wait_WOC(iobase); - TxFreeList = get_uint16(ramBase + NETWAVE_EREG_TDP); - MaxData = get_uint16(ramBase + NETWAVE_EREG_TDP+2); - DataOffset = get_uint16(ramBase + NETWAVE_EREG_TDP+4); - - DEBUG(3, "TxFreeList %x, MaxData %x, DataOffset %x\n", - TxFreeList, MaxData, DataOffset); - - /* Copy packet to the adapter fragment buffers */ - curBuff = TxFreeList; - tmpcount = 0; - while (tmpcount < len) { - int tmplen = len - tmpcount; - copy_to_pc(ramBase + curBuff + DataOffset, data + tmpcount, - (tmplen < MaxData) ? tmplen : MaxData); - tmpcount += MaxData; - - /* Advance to next buffer */ - curBuff = get_uint16(ramBase + curBuff); - } - - /* Now issue transmit list */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_TL, ramBase + NETWAVE_EREG_CB + 0); - writeb(len & 0xff, ramBase + NETWAVE_EREG_CB + 1); - writeb((len>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); - - restore_flags( flags); - return 0; -} - -static int netwave_start_xmit(struct sk_buff *skb, struct net_device *dev) { - /* This flag indicate that the hardware can't perform a transmission. - * Theoritically, NET3 check it before sending a packet to the driver, - * but in fact it never do that and pool continuously. - * As the watchdog will abort too long transmissions, we are quite safe... - */ - - netif_stop_queue(dev); - - { - short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; - unsigned char* buf = skb->data; - - if (netwave_hw_xmit( buf, length, dev) == 1) { - /* Some error, let's make them call us another time? */ - netif_start_queue(dev); - } - dev->trans_start = jiffies; - } - dev_kfree_skb(skb); - - return 0; -} /* netwave_start_xmit */ - -/* - * Function netwave_interrupt (irq, dev_id, regs) - * - * This function is the interrupt handler for the Netwave card. This - * routine will be called whenever: - * 1. A packet is received. - * 2. A packet has successfully been transferred and the unit is - * ready to transmit another packet. - * 3. A command has completed execution. - */ -static void netwave_interrupt(int irq, void* dev_id, struct pt_regs *regs) { - ioaddr_t iobase; - u_char *ramBase; - struct net_device *dev = (struct net_device *)dev_id; - struct netwave_private *priv = dev->priv; - dev_link_t *link = &priv->link; - int i; - - if (!netif_device_present(dev)) - return; - - iobase = dev->base_addr; - ramBase = priv->ramBase; - - /* Now find what caused the interrupt, check while interrupts ready */ - for (i = 0; i < 10; i++) { - u_char status; - - wait_WOC(iobase); - if (!(inb(iobase+NETWAVE_REG_CCSR) & 0x02)) - break; /* None of the interrupt sources asserted */ - - status = inb(iobase + NETWAVE_REG_ASR); - - if (!DEV_OK(link)) { - DEBUG(1, "netwave_interrupt: Interrupt with status 0x%x " - "from removed or suspended card!\n", status); - break; - } - - /* RxRdy */ - if (status & 0x80) { - netwave_rx(dev); - /* wait_WOC(iobase); */ - /* RxRdy cannot be reset directly by the host */ - } - /* RxErr */ - if (status & 0x40) { - u_char rser; - - rser = readb(ramBase + NETWAVE_EREG_RSER); - - if (rser & 0x04) { - ++priv->stats.rx_dropped; - ++priv->stats.rx_crc_errors; - } - if (rser & 0x02) - ++priv->stats.rx_frame_errors; - - /* Clear the RxErr bit in RSER. RSER+4 is the - * write part. Also clear the RxCRC (0x04) and - * RxBig (0x02) bits if present */ - wait_WOC(iobase); - writeb(0x40 | (rser & 0x06), ramBase + NETWAVE_EREG_RSER + 4); - - /* Write bit 6 high to ASCC to clear RxErr in ASR, - * WOC must be set first! - */ - wait_WOC(iobase); - writeb(0x40, ramBase + NETWAVE_EREG_ASCC); - - /* Remember to count up priv->stats on error packets */ - ++priv->stats.rx_errors; - } - /* TxDN */ - if (status & 0x20) { - int txStatus; - - txStatus = readb(ramBase + NETWAVE_EREG_TSER); - DEBUG(3, "Transmit done. TSER = %x id %x\n", - txStatus, readb(ramBase + NETWAVE_EREG_TSER + 1)); - - if (txStatus & 0x20) { - /* Transmitting was okay, clear bits */ - wait_WOC(iobase); - writeb(0x2f, ramBase + NETWAVE_EREG_TSER + 4); - ++priv->stats.tx_packets; - } - - if (txStatus & 0xd0) { - if (txStatus & 0x80) { - ++priv->stats.collisions; /* Because of /proc/net/dev*/ - /* ++priv->stats.tx_aborted_errors; */ - /* printk("Collision. %ld\n", jiffies - dev->trans_start); */ - } - if (txStatus & 0x40) - ++priv->stats.tx_carrier_errors; - /* 0x80 TxGU Transmit giveup - nine times and no luck - * 0x40 TxNOAP No access point. Discarded packet. - * 0x10 TxErr Transmit error. Always set when - * TxGU and TxNOAP is set. (Those are the only ones - * to set TxErr). - */ - DEBUG(3, "netwave_interrupt: TxDN with error status %x\n", - txStatus); - - /* Clear out TxGU, TxNOAP, TxErr and TxTrys */ - wait_WOC(iobase); - writeb(0xdf & txStatus, ramBase+NETWAVE_EREG_TSER+4); - ++priv->stats.tx_errors; - } - DEBUG(3, "New status is TSER %x ASR %x\n", - readb(ramBase + NETWAVE_EREG_TSER), - inb(iobase + NETWAVE_REG_ASR)); - - netif_wake_queue(dev); - } - /* TxBA, this would trigger on all error packets received */ - /* if (status & 0x01) { - DEBUG(4, "Transmit buffers available, %x\n", status); - } - */ - } -} /* netwave_interrupt */ - -/* - * Function netwave_watchdog (a) - * - * Watchdog : when we start a transmission, we set a timer in the - * kernel. If the transmission complete, this timer is disabled. If - * it expire, we reset the card. - * - */ -static void netwave_watchdog(struct net_device *dev) { - - DEBUG(1, "%s: netwave_watchdog: watchdog timer expired\n", dev->name); - netwave_reset(dev); - dev->trans_start = jiffies; - netif_wake_queue(dev); -} /* netwave_watchdog */ - -static struct net_device_stats *netwave_get_stats(struct net_device *dev) { - netwave_private *priv = (netwave_private*)dev->priv; - - update_stats(dev); - - DEBUG(2, "netwave: SPCQ %x SPU %x LIF %x ISPLQ %x MHS %x rxtx %x" - " %x tx %x %x %x %x\n", - readb(priv->ramBase + NETWAVE_EREG_SPCQ), - readb(priv->ramBase + NETWAVE_EREG_SPU), - readb(priv->ramBase + NETWAVE_EREG_LIF), - readb(priv->ramBase + NETWAVE_EREG_ISPLQ), - readb(priv->ramBase + NETWAVE_EREG_MHS), - readb(priv->ramBase + NETWAVE_EREG_EC + 0xe), - readb(priv->ramBase + NETWAVE_EREG_EC + 0xf), - readb(priv->ramBase + NETWAVE_EREG_EC + 0x18), - readb(priv->ramBase + NETWAVE_EREG_EC + 0x19), - readb(priv->ramBase + NETWAVE_EREG_EC + 0x1a), - readb(priv->ramBase + NETWAVE_EREG_EC + 0x1b)); - - return &priv->stats; -} - -static void update_stats(struct net_device *dev) { - unsigned long flags; - - save_flags(flags); - cli(); - -/* netwave_private *priv = (netwave_private*) dev->priv; - priv->stats.rx_packets = readb(priv->ramBase + 0x18e); - priv->stats.tx_packets = readb(priv->ramBase + 0x18f); */ - - restore_flags(flags); -} - -static int netwave_rx(struct net_device *dev) { - netwave_private *priv = (netwave_private*)(dev->priv); - u_char *ramBase = priv->ramBase; - ioaddr_t iobase = dev->base_addr; - u_char rxStatus; - struct sk_buff *skb = NULL; - unsigned int curBuffer, - rcvList; - int rcvLen; - int tmpcount = 0; - int dataCount, dataOffset; - int i; - u_char *ptr; - - DEBUG(3, "xinw_rx: Receiving ... \n"); - - /* Receive max 10 packets for now. */ - for (i = 0; i < 10; i++) { - /* Any packets? */ - wait_WOC(iobase); - rxStatus = readb(ramBase + NETWAVE_EREG_RSER); - if ( !( rxStatus & 0x80)) /* No more packets */ - break; - - /* Check if multicast/broadcast or other */ - /* multicast = (rxStatus & 0x20); */ - - /* The receive list pointer and length of the packet */ - wait_WOC(iobase); - rcvLen = get_int16( ramBase + NETWAVE_EREG_RDP); - rcvList = get_uint16( ramBase + NETWAVE_EREG_RDP + 2); - - if (rcvLen < 0) { - printk(KERN_DEBUG "netwave_rx: Receive packet with len %d\n", - rcvLen); - return 0; - } - - skb = dev_alloc_skb(rcvLen+5); - if (skb == NULL) { - DEBUG(1, "netwave_rx: Could not allocate an sk_buff of " - "length %d\n", rcvLen); - ++priv->stats.rx_dropped; - /* Tell the adapter to skip the packet */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); - return 0; - } - - skb_reserve( skb, 2); /* Align IP on 16 byte */ - skb_put( skb, rcvLen); - skb->dev = dev; - - /* Copy packet fragments to the skb data area */ - ptr = (u_char*) skb->data; - curBuffer = rcvList; - tmpcount = 0; - while ( tmpcount < rcvLen) { - /* Get length and offset of current buffer */ - dataCount = get_uint16( ramBase+curBuffer+2); - dataOffset = get_uint16( ramBase+curBuffer+4); - - copy_from_pc( ptr + tmpcount, - ramBase+curBuffer+dataOffset, dataCount); - - tmpcount += dataCount; - - /* Point to next buffer */ - curBuffer = get_uint16(ramBase + curBuffer); - } - - skb->protocol = eth_type_trans(skb,dev); - /* Queue packet for network layer */ - netif_rx(skb); - - dev->last_rx = jiffies; - priv->stats.rx_packets++; - priv->stats.rx_bytes += rcvLen; - - /* Got the packet, tell the adapter to skip it */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); - DEBUG(3, "Packet reception ok\n"); - } - return 0; -} - -static int netwave_open(struct net_device *dev) { - netwave_private *priv = dev->priv; - dev_link_t *link = &priv->link; - - DEBUG(1, "netwave_open: starting.\n"); - - if (!DEV_OK(link)) - return -ENODEV; - - link->open++; - MOD_INC_USE_COUNT; - - netif_start_queue(dev); - netwave_reset(dev); - - return 0; -} - -static int netwave_close(struct net_device *dev) { - netwave_private *priv = (netwave_private *)dev->priv; - dev_link_t *link = &priv->link; - - DEBUG(1, "netwave_close: finishing.\n"); - - link->open--; - netif_stop_queue(dev); - if (link->state & DEV_STALE_CONFIG) - mod_timer(&link->release, jiffies + HZ/20); - - MOD_DEC_USE_COUNT; - return 0; -} - -static int __init init_netwave_cs(void) { - servinfo_t serv; - - DEBUG(0, "%s\n", version); - - CardServices(GetCardServicesInfo, &serv); - if (serv.Revision != CS_RELEASE_CODE) { - printk("netwave_cs: Card Services release does not match!\n"); - return -1; - } - - register_pccard_driver(&dev_info, &netwave_attach, &netwave_detach); - - return 0; -} - -static void __exit exit_netwave_cs(void) { - DEBUG(1, "netwave_cs: unloading\n"); - - unregister_pccard_driver(&dev_info); - - /* Do some cleanup of the device list */ - netwave_flush_stale_links(); - if(dev_list != NULL) /* Critical situation */ - printk("netwave_cs: devices remaining when removing module\n"); -} - -module_init(init_netwave_cs); -module_exit(exit_netwave_cs); - -/* Set or clear the multicast filter for this adaptor. - num_addrs == -1 Promiscuous mode, receive all packets - num_addrs == 0 Normal mode, clear multicast list - num_addrs > 0 Multicast mode, receive normal and MC packets, and do - best-effort filtering. - */ -static void set_multicast_list(struct net_device *dev) -{ - ioaddr_t iobase = dev->base_addr; - u_char* ramBase = ((netwave_private*) dev->priv)->ramBase; - u_char rcvMode = 0; - -#ifdef PCMCIA_DEBUG - if (pc_debug > 2) { - static int old; - if (old != dev->mc_count) { - old = dev->mc_count; - DEBUG(0, "%s: setting Rx mode to %d addresses.\n", - dev->name, dev->mc_count); - } - } -#endif - - if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) { - /* Multicast Mode */ - rcvMode = rxConfRxEna + rxConfAMP + rxConfBcast; - } else if (dev->flags & IFF_PROMISC) { - /* Promiscous mode */ - rcvMode = rxConfRxEna + rxConfPro + rxConfAMP + rxConfBcast; - } else { - /* Normal mode */ - rcvMode = rxConfRxEna + rxConfBcast; - } - - /* printk("netwave set_multicast_list: rcvMode to %x\n", rcvMode);*/ - /* Now set receive mode */ - wait_WOC(iobase); - writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0); - writeb(rcvMode, ramBase + NETWAVE_EREG_CB + 1); - writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); -} +/********************************************************************* + * + * Filename: netwave_cs.c + * Version: 0.4.1 + * Description: Netwave AirSurfer Wireless LAN PC Card driver + * Status: Experimental. + * Authors: John Markus Bjørndalen + * Dag Brattli + * David Hinds + * Created at: A long time ago! + * Modified at: Mon Nov 10 11:54:37 1997 + * Modified by: Dag Brattli + * + * Copyright (c) 1997 University of Tromsø, Norway + * + * Revision History: + * + * 08-Nov-97 15:14:47 John Markus Bjørndalen + * - Fixed some bugs in netwave_rx and cleaned it up a bit. + * (One of the bugs would have destroyed packets when receiving + * multiple packets per interrupt). + * - Cleaned up parts of newave_hw_xmit. + * - A few general cleanups. + * 24-Oct-97 13:17:36 Dag Brattli + * - Fixed netwave_rx receive function (got updated docs) + * Others: + * - Changed name from xircnw to netwave, take a look at + * http://www.netwave-wireless.com + * - Some reorganizing of the code + * - Removed possible race condition between interrupt handler and transmit + * function + * - Started to add wireless extensions, but still needs some coding + * - Added watchdog for better handling of transmission timeouts + * (hopefully this works better) + ********************************************************************/ + +/* To have statistics (just packets sent) define this */ +#undef NETWAVE_STATS + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#ifdef CONFIG_NET_PCMCIA_RADIO +#include +#endif + +#include +#include +#include +#include +#include +#include +#include + +#define NETWAVE_REGOFF 0x8000 +/* The Netwave IO registers, offsets to iobase */ +#define NETWAVE_REG_COR 0x0 +#define NETWAVE_REG_CCSR 0x2 +#define NETWAVE_REG_ASR 0x4 +#define NETWAVE_REG_IMR 0xa +#define NETWAVE_REG_PMR 0xc +#define NETWAVE_REG_IOLOW 0x6 +#define NETWAVE_REG_IOHI 0x7 +#define NETWAVE_REG_IOCONTROL 0x8 +#define NETWAVE_REG_DATA 0xf +/* The Netwave Extended IO registers, offsets to RamBase */ +#define NETWAVE_EREG_ASCC 0x114 +#define NETWAVE_EREG_RSER 0x120 +#define NETWAVE_EREG_RSERW 0x124 +#define NETWAVE_EREG_TSER 0x130 +#define NETWAVE_EREG_TSERW 0x134 +#define NETWAVE_EREG_CB 0x100 +#define NETWAVE_EREG_SPCQ 0x154 +#define NETWAVE_EREG_SPU 0x155 +#define NETWAVE_EREG_LIF 0x14e +#define NETWAVE_EREG_ISPLQ 0x156 +#define NETWAVE_EREG_HHC 0x158 +#define NETWAVE_EREG_NI 0x16e +#define NETWAVE_EREG_MHS 0x16b +#define NETWAVE_EREG_TDP 0x140 +#define NETWAVE_EREG_RDP 0x150 +#define NETWAVE_EREG_PA 0x160 +#define NETWAVE_EREG_EC 0x180 +#define NETWAVE_EREG_CRBP 0x17a +#define NETWAVE_EREG_ARW 0x166 + +/* + * Commands used in the extended command buffer + * NETWAVE_EREG_CB (0x100-0x10F) + */ +#define NETWAVE_CMD_NOP 0x00 +#define NETWAVE_CMD_SRC 0x01 +#define NETWAVE_CMD_STC 0x02 +#define NETWAVE_CMD_AMA 0x03 +#define NETWAVE_CMD_DMA 0x04 +#define NETWAVE_CMD_SAMA 0x05 +#define NETWAVE_CMD_ER 0x06 +#define NETWAVE_CMD_DR 0x07 +#define NETWAVE_CMD_TL 0x08 +#define NETWAVE_CMD_SRP 0x09 +#define NETWAVE_CMD_SSK 0x0a +#define NETWAVE_CMD_SMD 0x0b +#define NETWAVE_CMD_SAPD 0x0c +#define NETWAVE_CMD_SSS 0x11 +/* End of Command marker */ +#define NETWAVE_CMD_EOC 0x00 + +/* ASR register bits */ +#define NETWAVE_ASR_RXRDY 0x80 +#define NETWAVE_ASR_TXBA 0x01 + +#define TX_TIMEOUT ((32*HZ)/100) + +static const unsigned int imrConfRFU1 = 0x10; /* RFU interrupt mask, keep high */ +static const unsigned int imrConfIENA = 0x02; /* Interrupt enable */ + +static const unsigned int corConfIENA = 0x01; /* Interrupt enable */ +static const unsigned int corConfLVLREQ = 0x40; /* Keep high */ + +static const unsigned int rxConfRxEna = 0x80; /* Receive Enable */ +static const unsigned int rxConfMAC = 0x20; /* MAC host receive mode*/ +static const unsigned int rxConfPro = 0x10; /* Promiscuous */ +static const unsigned int rxConfAMP = 0x08; /* Accept Multicast Packets */ +static const unsigned int rxConfBcast = 0x04; /* Accept Broadcast Packets */ + +static const unsigned int txConfTxEna = 0x80; /* Transmit Enable */ +static const unsigned int txConfMAC = 0x20; /* Host sends MAC mode */ +static const unsigned int txConfEUD = 0x10; /* Enable Uni-Data packets */ +static const unsigned int txConfKey = 0x02; /* Scramble data packets */ +static const unsigned int txConfLoop = 0x01; /* Loopback mode */ + +/* + All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If + you do not define PCMCIA_DEBUG at all, all the debug code will be + left out. If you compile with PCMCIA_DEBUG=0, the debug code will + be present but disabled -- but it can then be enabled for specific + modules at load time with a 'pc_debug=#' option to insmod. +*/ + +#ifdef PCMCIA_DEBUG +static int pc_debug = PCMCIA_DEBUG; +MODULE_PARM(pc_debug, "i"); +#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) +static char *version = +"netwave_cs.c 0.3.0 Thu Jul 17 14:36:02 1997 (John Markus Bjørndalen)\n"; +#else +#define DEBUG(n, args...) +#endif + +static dev_info_t dev_info = "netwave_cs"; + +/*====================================================================*/ + +/* Parameters that can be set with 'insmod' */ + +/* Choose the domain, default is 0x100 */ +static u_int domain = 0x100; + +/* Scramble key, range from 0x0 to 0xffff. + * 0x0 is no scrambling. + */ +static u_int scramble_key = 0x0; + +/* Shared memory speed, in ns. The documentation states that + * the card should not be read faster than every 400ns. + * This timing should be provided by the HBA. If it becomes a + * problem, try setting mem_speed to 400. + */ +static int mem_speed; + +/* Bit map of interrupts to choose from */ +/* This means pick from 15, 14, 12, 11, 10, 9, 7, 5, 4, and 3 */ +static u_int irq_mask = 0xdeb8; +static int irq_list[4] = { -1 }; + +MODULE_PARM(domain, "i"); +MODULE_PARM(scramble_key, "i"); +MODULE_PARM(mem_speed, "i"); +MODULE_PARM(irq_mask, "i"); +MODULE_PARM(irq_list, "1-4i"); + +MODULE_LICENSE("GPL"); + +/*====================================================================*/ + +/* PCMCIA (Card Services) related functions */ +static void netwave_release(u_long arg); /* Card removal */ +static int netwave_event(event_t event, int priority, + event_callback_args_t *args); +static void netwave_pcmcia_config(dev_link_t *arg); /* Runs after card + insertion */ +static dev_link_t *netwave_attach(void); /* Create instance */ +static void netwave_detach(dev_link_t *); /* Destroy instance */ +static void netwave_flush_stale_links(void); /* Destroy all staled instances */ + +/* Hardware configuration */ +static void netwave_doreset(ioaddr_t iobase, u_char* ramBase); +static void netwave_reset(struct net_device *dev); + +/* Misc device stuff */ +static int netwave_open(struct net_device *dev); /* Open the device */ +static int netwave_close(struct net_device *dev); /* Close the device */ +static int netwave_config(struct net_device *dev, struct ifmap *map); + +/* Packet transmission and Packet reception */ +static int netwave_start_xmit( struct sk_buff *skb, struct net_device *dev); +static int netwave_rx( struct net_device *dev); + +/* Interrupt routines */ +static void netwave_interrupt(int irq, void *dev_id, struct pt_regs *regs); +static void netwave_watchdog(struct net_device *); + +/* Statistics */ +static void update_stats(struct net_device *dev); +static struct net_device_stats *netwave_get_stats(struct net_device *dev); + +/* Wireless extensions */ +#ifdef WIRELESS_EXT +static struct iw_statistics* netwave_get_wireless_stats(struct net_device *dev); +#endif +static int netwave_ioctl(struct net_device *, struct ifreq *, int); + +static void set_multicast_list(struct net_device *dev); + +/* + A linked list of "instances" of the skeleton device. Each actual + PCMCIA card corresponds to one device instance, and is described + by one dev_link_t structure (defined in ds.h). + + You may not want to use a linked list for this -- for example, the + memory card driver uses an array of dev_link_t pointers, where minor + device numbers are used to derive the corresponding array index. +*/ +static dev_link_t *dev_list; + +/* + A dev_link_t structure has fields for most things that are needed + to keep track of a socket, but there will usually be some device + specific information that also needs to be kept track of. The + 'priv' pointer in a dev_link_t structure can be used to point to + a device-specific private data structure, like this. + + A driver needs to provide a dev_node_t structure for each device + on a card. In some cases, there is only one device per card (for + example, ethernet cards, modems). In other cases, there may be + many actual or logical devices (SCSI adapters, memory cards with + multiple partitions). The dev_node_t structures need to be kept + in a linked list starting at the 'dev' field of a dev_link_t + structure. We allocate them in the card's private data structure, + because they generally can't be allocated dynamically. +*/ + +/* Wireless Extension Backward compatibility - Jean II + * If the new wireless device private ioctl range is not defined, + * default to standard device private ioctl range */ +#ifndef SIOCIWFIRSTPRIV +#define SIOCIWFIRSTPRIV SIOCDEVPRIVATE +#endif /* SIOCIWFIRSTPRIV */ + +#define SIOCGIPSNAP SIOCIWFIRSTPRIV /* Site Survey Snapshot */ +/*#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1*/ + +#define MAX_ESA 10 + +typedef struct net_addr { + u_char addr48[6]; +} net_addr; + +struct site_survey { + u_short length; + u_char struct_revision; + u_char roaming_state; + + u_char sp_existsFlag; + u_char sp_link_quality; + u_char sp_max_link_quality; + u_char linkQualityGoodFairBoundary; + u_char linkQualityFairPoorBoundary; + u_char sp_utilization; + u_char sp_goodness; + u_char sp_hotheadcount; + u_char roaming_condition; + + net_addr sp; + u_char numAPs; + net_addr nearByAccessPoints[MAX_ESA]; +}; + +typedef struct netwave_private { + dev_link_t link; + struct net_device dev; + dev_node_t node; + u_char *ramBase; + int timeoutCounter; + int lastExec; + struct timer_list watchdog; /* To avoid blocking state */ + struct site_survey nss; + struct net_device_stats stats; +#ifdef WIRELESS_EXT + struct iw_statistics iw_stats; /* Wireless stats */ +#endif +} netwave_private; + +#ifdef NETWAVE_STATS +static struct net_device_stats *netwave_get_stats(struct net_device *dev); +#endif + +/* + * The Netwave card is little-endian, so won't work for big endian + * systems. + */ +static inline unsigned short get_uint16(u_char* staddr) +{ + return readw(staddr); /* Return only 16 bits */ +} + +static inline short get_int16(u_char* staddr) +{ + return readw(staddr); +} + +/**************************************************************************/ + +static void cs_error(client_handle_t handle, int func, int ret) +{ + error_info_t err = { func, ret }; + CardServices(ReportError, handle, &err); +} + +/* + * Wait until the WOC (Write Operation Complete) bit in the + * ASR (Adapter Status Register) is asserted. + * This should have aborted if it takes too long time. + */ +static inline void wait_WOC(unsigned int iobase) +{ + /* Spin lock */ + while ((inb(iobase + NETWAVE_REG_ASR) & 0x8) != 0x8) ; +} + +#ifdef WIRELESS_EXT +static void netwave_snapshot(netwave_private *priv, u_char *ramBase, + ioaddr_t iobase) { + u_short resultBuffer; + + /* if time since last snapshot is > 1 sec. (100 jiffies?) then take + * new snapshot, else return cached data. This is the recommended rate. + */ + if ( jiffies - priv->lastExec > 100) { + /* Take site survey snapshot */ + /*printk( KERN_DEBUG "Taking new snapshot. %ld\n", jiffies - + priv->lastExec); */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSS, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + wait_WOC(iobase); + + /* Get result and copy to cach */ + resultBuffer = readw(ramBase + NETWAVE_EREG_CRBP); + copy_from_pc( &priv->nss, ramBase+resultBuffer, + sizeof(struct site_survey)); + } +} +#endif + +#ifdef WIRELESS_EXT +/* + * Function netwave_get_wireless_stats (dev) + * + * Wireless extensions statistics + * + */ +static struct iw_statistics *netwave_get_wireless_stats(struct net_device *dev) +{ + unsigned long flags; + ioaddr_t iobase = dev->base_addr; + netwave_private *priv = (netwave_private *) dev->priv; + u_char *ramBase = priv->ramBase; + struct iw_statistics* wstats; + + wstats = &priv->iw_stats; + + save_flags(flags); + cli(); + + netwave_snapshot( priv, ramBase, iobase); + + wstats->status = priv->nss.roaming_state; + wstats->qual.qual = readb( ramBase + NETWAVE_EREG_SPCQ); + wstats->qual.level = readb( ramBase + NETWAVE_EREG_ISPLQ); + wstats->qual.noise = readb( ramBase + NETWAVE_EREG_SPU) & 0x3f; + wstats->discard.nwid = 0L; + wstats->discard.code = 0L; + wstats->discard.misc = 0L; + + restore_flags(flags); + + return &priv->iw_stats; +} +#endif + +/* + * Function netwave_attach (void) + * + * Creates an "instance" of the driver, allocating local data + * structures for one device. The device is registered with Card + * Services. + * + * The dev_link structure is initialized, but we don't actually + * configure the card at this point -- we wait until we receive a + * card insertion event. + */ +static dev_link_t *netwave_attach(void) +{ + client_reg_t client_reg; + dev_link_t *link; + struct net_device *dev; + netwave_private *priv; + int i, ret; + + DEBUG(0, "netwave_attach()\n"); + + /* Perform some cleanup */ + netwave_flush_stale_links(); + + /* Initialize the dev_link_t structure */ + priv = kmalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) return NULL; + memset(priv, 0, sizeof(*priv)); + link = &priv->link; dev = &priv->dev; + link->priv = dev->priv = priv; + link->release.function = &netwave_release; + link->release.data = (u_long)link; + + /* The io structure describes IO port mapping */ + link->io.NumPorts1 = 16; + link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; + /* link->io.NumPorts2 = 16; + link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; */ + link->io.IOAddrLines = 5; + + /* Interrupt setup */ + link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; + link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; + if (irq_list[0] == -1) + link->irq.IRQInfo2 = irq_mask; + else + for (i = 0; i < 4; i++) + link->irq.IRQInfo2 |= 1 << irq_list[i]; + link->irq.Handler = &netwave_interrupt; + + /* General socket configuration */ + link->conf.Attributes = CONF_ENABLE_IRQ; + link->conf.Vcc = 50; + link->conf.IntType = INT_MEMORY_AND_IO; + link->conf.ConfigIndex = 1; + link->conf.Present = PRESENT_OPTION; + + /* Netwave specific entries in the device structure */ + dev->hard_start_xmit = &netwave_start_xmit; + dev->set_config = &netwave_config; + dev->get_stats = &netwave_get_stats; + dev->set_multicast_list = &set_multicast_list; + /* wireless extensions */ +#ifdef WIRELESS_EXT + dev->get_wireless_stats = &netwave_get_wireless_stats; +#endif + dev->do_ioctl = &netwave_ioctl; + + dev->tx_timeout = &netwave_watchdog; + dev->watchdog_timeo = TX_TIMEOUT; + + ether_setup(dev); + dev->open = &netwave_open; + dev->stop = &netwave_close; + link->irq.Instance = dev; + + /* Register with Card Services */ + link->next = dev_list; + dev_list = link; + client_reg.dev_info = &dev_info; + client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; + client_reg.EventMask = + CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | + CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | + CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; + client_reg.event_handler = &netwave_event; + client_reg.Version = 0x0210; + client_reg.event_callback_args.client_data = link; + ret = CardServices(RegisterClient, &link->handle, &client_reg); + if (ret != 0) { + cs_error(link->handle, RegisterClient, ret); + netwave_detach(link); + return NULL; + } + + return link; +} /* netwave_attach */ + +/* + * Function netwave_detach (link) + * + * This deletes a driver "instance". The device is de-registered + * with Card Services. If it has been released, all local data + * structures are freed. Otherwise, the structures will be freed + * when the device is released. + */ +static void netwave_detach(dev_link_t *link) +{ + netwave_private *priv = link->priv; + dev_link_t **linkp; + + DEBUG(0, "netwave_detach(0x%p)\n", link); + + /* + If the device is currently configured and active, we won't + actually delete it yet. Instead, it is marked so that when + the release() function is called, that will trigger a proper + detach(). + */ + del_timer(&link->release); + if (link->state & DEV_CONFIG) { + netwave_release((u_long) link); + if (link->state & DEV_STALE_CONFIG) { + DEBUG(1, "netwave_cs: detach postponed, '%s' still " + "locked\n", link->dev->dev_name); + link->state |= DEV_STALE_LINK; + return; + } + } + + /* Break the link with Card Services */ + if (link->handle) + CardServices(DeregisterClient, link->handle); + + /* Locate device structure */ + for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) + if (*linkp == link) break; + if (*linkp == NULL) + { + DEBUG(1, "netwave_cs: detach fail, '%s' not in list\n", + link->dev->dev_name); + return; + } + + /* Unlink device structure, free pieces */ + *linkp = link->next; + if (link->dev) + unregister_netdev(&priv->dev); + kfree(priv); + +} /* netwave_detach */ + +/* + * Function netwave_flush_stale_links (void) + * + * This deletes all driver "instances" that need to be deleted. + * Sometimes, netwave_detach can't be performed following a call from + * cardmgr (device still open) and the device is put in a STALE_LINK + * state. + * This function is in charge of making the cleanup... + */ +static void netwave_flush_stale_links(void) +{ + dev_link_t * link; /* Current node in linked list */ + dev_link_t * next; /* Next node in linked list */ + + DEBUG(1, "netwave_flush_stale_links(0x%p)\n", dev_list); + + /* Go through the list */ + for (link = dev_list; link; link = next) { + next = link->next; + /* Check if in need of being removed */ + if(link->state & DEV_STALE_LINK) + netwave_detach(link); + } +} /* netwave_flush_stale_links */ + +/* + * Function netwave_ioctl (dev, rq, cmd) + * + * Perform ioctl : config & info stuff + * This is the stuff that are treated the wireless extensions (iwconfig) + * + */ +static int netwave_ioctl(struct net_device *dev, /* ioctl device */ + struct ifreq *rq, /* Data passed */ + int cmd) /* Ioctl number */ +{ + unsigned long flags; + int ret = 0; +#ifdef WIRELESS_EXT + ioaddr_t iobase = dev->base_addr; + netwave_private *priv = (netwave_private *) dev->priv; + u_char *ramBase = priv->ramBase; + struct iwreq *wrq = (struct iwreq *) rq; +#endif + + DEBUG(0, "%s: ->netwave_ioctl(cmd=0x%X)\n", dev->name, cmd); + + /* Disable interrupts & save flags */ + save_flags(flags); + cli(); + + /* Look what is the request */ + switch(cmd) { + /* --------------- WIRELESS EXTENSIONS --------------- */ +#ifdef WIRELESS_EXT + case SIOCGIWNAME: + /* Get name */ + strcpy(wrq->u.name, "Netwave"); + break; + case SIOCSIWNWID: + /* Set domain */ +#if WIRELESS_EXT > 8 + if(!wrq->u.nwid.disabled) { + domain = wrq->u.nwid.value; +#else /* WIRELESS_EXT > 8 */ + if(wrq->u.nwid.on) { + domain = wrq->u.nwid.nwid; +#endif /* WIRELESS_EXT > 8 */ + printk( KERN_DEBUG "Setting domain to 0x%x%02x\n", + (domain >> 8) & 0x01, domain & 0xff); + wait_WOC(iobase); + writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0); + writeb( domain & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((domain >>8 ) & 0x01,ramBase + NETWAVE_EREG_CB+2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + } break; + case SIOCGIWNWID: + /* Read domain*/ +#if WIRELESS_EXT > 8 + wrq->u.nwid.value = domain; + wrq->u.nwid.disabled = 0; + wrq->u.nwid.fixed = 1; +#else /* WIRELESS_EXT > 8 */ + wrq->u.nwid.nwid = domain; + wrq->u.nwid.on = 1; +#endif /* WIRELESS_EXT > 8 */ + break; +#if WIRELESS_EXT > 8 /* Note : The API did change... */ + case SIOCGIWENCODE: + /* Get scramble key */ + if(wrq->u.encoding.pointer != (caddr_t) 0) + { + char key[2]; + key[1] = scramble_key & 0xff; + key[0] = (scramble_key>>8) & 0xff; + wrq->u.encoding.flags = IW_ENCODE_ENABLED; + wrq->u.encoding.length = 2; + if(copy_to_user(wrq->u.encoding.pointer, key, 2)) + ret = -EFAULT; + } + break; + case SIOCSIWENCODE: + /* Set scramble key */ + if(wrq->u.encoding.pointer != (caddr_t) 0) + { + char key[2]; + if(copy_from_user(key, wrq->u.encoding.pointer, 2)) + { + ret = -EFAULT; + break; + } + scramble_key = (key[0] << 8) | key[1]; + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); + writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + } + break; + case SIOCGIWMODE: + /* Mode of operation */ + if(domain & 0x100) + wrq->u.mode = IW_MODE_INFRA; + else + wrq->u.mode = IW_MODE_ADHOC; + break; +#else /* WIRELESS_EXT > 8 */ + case SIOCGIWENCODE: + /* Get scramble key */ + wrq->u.encoding.code = scramble_key; + wrq->u.encoding.method = 1; + break; + case SIOCSIWENCODE: + /* Set scramble key */ + scramble_key = wrq->u.encoding.code; + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); + writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + break; +#endif /* WIRELESS_EXT > 8 */ + case SIOCGIWRANGE: + /* Basic checking... */ + if(wrq->u.data.pointer != (caddr_t) 0) { + struct iw_range range; + + /* Set the length (very important for backward compatibility) */ + wrq->u.data.length = sizeof(struct iw_range); + + /* Set all the info we don't care or don't know about to zero */ + memset(&range, 0, sizeof(range)); + +#if WIRELESS_EXT > 10 + /* Set the Wireless Extension versions */ + range.we_version_compiled = WIRELESS_EXT; + range.we_version_source = 9; /* Nothing for us in v10 and v11 */ +#endif /* WIRELESS_EXT > 10 */ + + /* Set information in the range struct */ + range.throughput = 450 * 1000; /* don't argue on this ! */ + range.min_nwid = 0x0000; + range.max_nwid = 0x01FF; + + range.num_channels = range.num_frequency = 0; + + range.sensitivity = 0x3F; + range.max_qual.qual = 255; + range.max_qual.level = 255; + range.max_qual.noise = 0; + +#if WIRELESS_EXT > 7 + range.num_bitrates = 1; + range.bitrate[0] = 1000000; /* 1 Mb/s */ +#endif /* WIRELESS_EXT > 7 */ + +#if WIRELESS_EXT > 8 + range.encoding_size[0] = 2; /* 16 bits scrambling */ + range.num_encoding_sizes = 1; + range.max_encoding_tokens = 1; /* Only one key possible */ +#endif /* WIRELESS_EXT > 8 */ + + /* Copy structure to the user buffer */ + if(copy_to_user(wrq->u.data.pointer, &range, + sizeof(struct iw_range))) + ret = -EFAULT; + } + break; + case SIOCGIWPRIV: + /* Basic checking... */ + if(wrq->u.data.pointer != (caddr_t) 0) { + struct iw_priv_args priv[] = + { /* cmd, set_args, get_args, name */ + { SIOCGIPSNAP, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 0, + sizeof(struct site_survey), + "getsitesurvey" }, + }; + + /* Set the number of ioctl available */ + wrq->u.data.length = 1; + + /* Copy structure to the user buffer */ + if(copy_to_user(wrq->u.data.pointer, (u_char *) priv, + sizeof(priv))) + ret = -EFAULT; + } + break; + case SIOCGIPSNAP: + if(wrq->u.data.pointer != (caddr_t) 0) { + /* Take snapshot of environment */ + netwave_snapshot( priv, ramBase, iobase); + wrq->u.data.length = priv->nss.length; + /* Copy structure to the user buffer */ + if(copy_to_user(wrq->u.data.pointer, + (u_char *) &priv->nss, + sizeof( struct site_survey))) + { + printk(KERN_DEBUG "Bad buffer!\n"); + break; + } + + priv->lastExec = jiffies; + } + break; +#endif + default: + ret = -EOPNOTSUPP; + } + + /* ReEnable interrupts & restore flags */ + restore_flags(flags); + + return ret; +} + +/* + * Function netwave_pcmcia_config (link) + * + * netwave_pcmcia_config() is scheduled to run after a CARD_INSERTION + * event is received, to configure the PCMCIA socket, and to make the + * device available to the system. + * + */ + +#define CS_CHECK(fn, args...) \ +while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed + +static void netwave_pcmcia_config(dev_link_t *link) { + client_handle_t handle = link->handle; + netwave_private *priv = link->priv; + struct net_device *dev = &priv->dev; + tuple_t tuple; + cisparse_t parse; + int i, j, last_ret, last_fn; + u_char buf[64]; + win_req_t req; + memreq_t mem; + u_char *ramBase = NULL; + + DEBUG(0, "netwave_pcmcia_config(0x%p)\n", link); + + /* + This reads the card's CONFIG tuple to find its configuration + registers. + */ + tuple.Attributes = 0; + tuple.TupleData = (cisdata_t *) buf; + tuple.TupleDataMax = 64; + tuple.TupleOffset = 0; + tuple.DesiredTuple = CISTPL_CONFIG; + CS_CHECK(GetFirstTuple, handle, &tuple); + CS_CHECK(GetTupleData, handle, &tuple); + CS_CHECK(ParseTuple, handle, &tuple, &parse); + link->conf.ConfigBase = parse.config.base; + link->conf.Present = parse.config.rmask[0]; + + /* Configure card */ + link->state |= DEV_CONFIG; + + /* + * Try allocating IO ports. This tries a few fixed addresses. + * If you want, you can also read the card's config table to + * pick addresses -- see the serial driver for an example. + */ + for (i = j = 0x0; j < 0x400; j += 0x20) { + link->io.BasePort1 = j ^ 0x300; + i = CardServices(RequestIO, link->handle, &link->io); + if (i == CS_SUCCESS) break; + } + if (i != CS_SUCCESS) { + cs_error(link->handle, RequestIO, i); + goto failed; + } + + /* + * Now allocate an interrupt line. Note that this does not + * actually assign a handler to the interrupt. + */ + CS_CHECK(RequestIRQ, handle, &link->irq); + + /* + * This actually configures the PCMCIA socket -- setting up + * the I/O windows and the interrupt mapping. + */ + CS_CHECK(RequestConfiguration, handle, &link->conf); + + /* + * Allocate a 32K memory window. Note that the dev_link_t + * structure provides space for one window handle -- if your + * device needs several windows, you'll need to keep track of + * the handles in your private data structure, link->priv. + */ + DEBUG(1, "Setting mem speed of %d\n", mem_speed); + + req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_CM|WIN_ENABLE; + req.Base = 0; req.Size = 0x8000; + req.AccessSpeed = mem_speed; + link->win = (window_handle_t)link->handle; + CS_CHECK(RequestWindow, &link->win, &req); + mem.CardOffset = 0x20000; mem.Page = 0; + CS_CHECK(MapMemPage, link->win, &mem); + + /* Store base address of the common window frame */ + ramBase = ioremap(req.Base, 0x8000); + ((netwave_private*)dev->priv)->ramBase = ramBase; + + dev->irq = link->irq.AssignedIRQ; + dev->base_addr = link->io.BasePort1; + if (register_netdev(dev) != 0) { + printk(KERN_DEBUG "netwave_cs: register_netdev() failed\n"); + goto failed; + } + + strcpy(priv->node.dev_name, dev->name); + link->dev = &priv->node; + link->state &= ~DEV_CONFIG_PENDING; + + /* Reset card before reading physical address */ + netwave_doreset(dev->base_addr, ramBase); + + /* Read the ethernet address and fill in the Netwave registers. */ + for (i = 0; i < 6; i++) + dev->dev_addr[i] = readb(ramBase + NETWAVE_EREG_PA + i); + + printk(KERN_INFO "%s: Netwave: port %#3lx, irq %d, mem %lx id " + "%c%c, hw_addr ", dev->name, dev->base_addr, dev->irq, + (u_long) ramBase, (int) readb(ramBase+NETWAVE_EREG_NI), + (int) readb(ramBase+NETWAVE_EREG_NI+1)); + for (i = 0; i < 6; i++) + printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n")); + + /* get revision words */ + printk(KERN_DEBUG "Netwave_reset: revision %04x %04x\n", + get_uint16(ramBase + NETWAVE_EREG_ARW), + get_uint16(ramBase + NETWAVE_EREG_ARW+2)); + return; + +cs_failed: + cs_error(link->handle, last_fn, last_ret); +failed: + netwave_release((u_long)link); +} /* netwave_pcmcia_config */ + +/* + * Function netwave_release (arg) + * + * After a card is removed, netwave_release() will unregister the net + * device, and release the PCMCIA configuration. If the device is + * still open, this will be postponed until it is closed. + */ +static void netwave_release(u_long arg) { + dev_link_t *link = (dev_link_t *)arg; + netwave_private *priv = link->priv; + + DEBUG(0, "netwave_release(0x%p)\n", link); + + /* + If the device is currently in use, we won't release until it + is actually closed. + */ + if (link->open) { + printk(KERN_DEBUG "netwave_cs: release postponed, '%s' still open\n", + link->dev->dev_name); + link->state |= DEV_STALE_CONFIG; + return; + } + + /* Don't bother checking to see if these succeed or not */ + if (link->win) { + iounmap(priv->ramBase); + CardServices(ReleaseWindow, link->win); + } + CardServices(ReleaseConfiguration, link->handle); + CardServices(ReleaseIO, link->handle, &link->io); + CardServices(ReleaseIRQ, link->handle, &link->irq); + + link->state &= ~(DEV_CONFIG | DEV_STALE_CONFIG); + +} /* netwave_release */ + +/* + * Function netwave_event (event, priority, args) + * + * The card status event handler. Mostly, this schedules other + * stuff to run after an event is received. A CARD_REMOVAL event + * also sets some flags to discourage the net drivers from trying + * to talk to the card any more. + * + * When a CARD_REMOVAL event is received, we immediately set a flag + * to block future accesses to this device. All the functions that + * actually access the device should check this flag to make sure + * the card is still present. + * + */ +static int netwave_event(event_t event, int priority, + event_callback_args_t *args) { + dev_link_t *link = args->client_data; + netwave_private *priv = link->priv; + struct net_device *dev = &priv->dev; + + DEBUG(1, "netwave_event(0x%06x)\n", event); + + switch (event) { + case CS_EVENT_REGISTRATION_COMPLETE: + DEBUG(0, "netwave_cs: registration complete\n"); + break; + + case CS_EVENT_CARD_REMOVAL: + link->state &= ~DEV_PRESENT; + if (link->state & DEV_CONFIG) { + netif_device_detach(dev); + mod_timer(&link->release, jiffies + HZ/20); + } + break; + case CS_EVENT_CARD_INSERTION: + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + netwave_pcmcia_config( link); + break; + case CS_EVENT_PM_SUSPEND: + link->state |= DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_RESET_PHYSICAL: + if (link->state & DEV_CONFIG) { + if (link->open) + netif_device_detach(dev); + CardServices(ReleaseConfiguration, link->handle); + } + break; + case CS_EVENT_PM_RESUME: + link->state &= ~DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_CARD_RESET: + if (link->state & DEV_CONFIG) { + CardServices(RequestConfiguration, link->handle, &link->conf); + if (link->open) { + netwave_reset(dev); + netif_device_attach(dev); + } + } + break; + } + return 0; +} /* netwave_event */ + +/* + * Function netwave_doreset (ioBase, ramBase) + * + * Proper hardware reset of the card. + */ +static void netwave_doreset(ioaddr_t ioBase, u_char* ramBase) { + /* Reset card */ + wait_WOC(ioBase); + outb(0x80, ioBase + NETWAVE_REG_PMR); + writeb(0x08, ramBase + NETWAVE_EREG_ASCC); /* Bit 3 is WOC */ + outb(0x0, ioBase + NETWAVE_REG_PMR); /* release reset */ +} + +/* + * Function netwave_reset (dev) + * + * Reset and restore all of the netwave registers + */ +static void netwave_reset(struct net_device *dev) { + /* u_char state; */ + netwave_private *priv = (netwave_private*) dev->priv; + u_char *ramBase = priv->ramBase; + ioaddr_t iobase = dev->base_addr; + + DEBUG(0, "netwave_reset: Done with hardware reset\n"); + + priv->timeoutCounter = 0; + + /* Reset card */ + netwave_doreset(iobase, ramBase); + printk(KERN_DEBUG "netwave_reset: Done with hardware reset\n"); + + /* Write a NOP to check the card */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_NOP, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + + /* Set receive conf */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0); + writeb(rxConfRxEna + rxConfBcast, ramBase + NETWAVE_EREG_CB + 1); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); + + /* Set transmit conf */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_STC, ramBase + NETWAVE_EREG_CB + 0); + writeb(txConfTxEna, ramBase + NETWAVE_EREG_CB + 1); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); + + /* Now set the MU Domain */ + printk(KERN_DEBUG "Setting domain to 0x%x%02x\n", (domain >> 8) & 0x01, domain & 0xff); + wait_WOC(iobase); + writeb(NETWAVE_CMD_SMD, ramBase + NETWAVE_EREG_CB + 0); + writeb(domain & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((domain>>8) & 0x01, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + /* Set scramble key */ + printk(KERN_DEBUG "Setting scramble key to 0x%x\n", scramble_key); + wait_WOC(iobase); + writeb(NETWAVE_CMD_SSK, ramBase + NETWAVE_EREG_CB + 0); + writeb(scramble_key & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((scramble_key>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + /* Enable interrupts, bit 4 high to keep unused + * source from interrupting us, bit 2 high to + * set interrupt enable, 567 to enable TxDN, + * RxErr and RxRdy + */ + wait_WOC(iobase); + outb(imrConfIENA+imrConfRFU1, iobase + NETWAVE_REG_IMR); + + /* Hent 4 bytes fra 0x170. Skal vaere 0a,29,88,36 + * waitWOC + * skriv 80 til d000:3688 + * sjekk om det ble 80 + */ + + /* Enable Receiver */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_ER, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + + /* Set the IENA bit in COR */ + wait_WOC(iobase); + outb(corConfIENA + corConfLVLREQ, iobase + NETWAVE_REG_COR); +} + +/* + * Function netwave_config (dev, map) + * + * Configure device, this work is done by netwave_pcmcia_config when a + * card is inserted + */ +static int netwave_config(struct net_device *dev, struct ifmap *map) { + return 0; +} + +/* + * Function netwave_hw_xmit (data, len, dev) + */ +static int netwave_hw_xmit(unsigned char* data, int len, + struct net_device* dev) { + unsigned long flags; + unsigned int TxFreeList, + curBuff, + MaxData, + DataOffset; + int tmpcount; + + netwave_private *priv = (netwave_private *) dev->priv; + u_char* ramBase = priv->ramBase; + ioaddr_t iobase = dev->base_addr; + + /* Disable interrupts & save flags */ + save_flags(flags); + cli(); + + /* Check if there are transmit buffers available */ + wait_WOC(iobase); + if ((inb(iobase+NETWAVE_REG_ASR) & NETWAVE_ASR_TXBA) == 0) { + /* No buffers available */ + printk(KERN_DEBUG "netwave_hw_xmit: %s - no xmit buffers available.\n", + dev->name); + restore_flags(flags); + return 1; + } + + priv->stats.tx_bytes += len; + + DEBUG(3, "Transmitting with SPCQ %x SPU %x LIF %x ISPLQ %x\n", + readb(ramBase + NETWAVE_EREG_SPCQ), + readb(ramBase + NETWAVE_EREG_SPU), + readb(ramBase + NETWAVE_EREG_LIF), + readb(ramBase + NETWAVE_EREG_ISPLQ)); + + /* Now try to insert it into the adapters free memory */ + wait_WOC(iobase); + TxFreeList = get_uint16(ramBase + NETWAVE_EREG_TDP); + MaxData = get_uint16(ramBase + NETWAVE_EREG_TDP+2); + DataOffset = get_uint16(ramBase + NETWAVE_EREG_TDP+4); + + DEBUG(3, "TxFreeList %x, MaxData %x, DataOffset %x\n", + TxFreeList, MaxData, DataOffset); + + /* Copy packet to the adapter fragment buffers */ + curBuff = TxFreeList; + tmpcount = 0; + while (tmpcount < len) { + int tmplen = len - tmpcount; + copy_to_pc(ramBase + curBuff + DataOffset, data + tmpcount, + (tmplen < MaxData) ? tmplen : MaxData); + tmpcount += MaxData; + + /* Advance to next buffer */ + curBuff = get_uint16(ramBase + curBuff); + } + + /* Now issue transmit list */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_TL, ramBase + NETWAVE_EREG_CB + 0); + writeb(len & 0xff, ramBase + NETWAVE_EREG_CB + 1); + writeb((len>>8) & 0xff, ramBase + NETWAVE_EREG_CB + 2); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 3); + + restore_flags( flags); + return 0; +} + +static int netwave_start_xmit(struct sk_buff *skb, struct net_device *dev) { + /* This flag indicate that the hardware can't perform a transmission. + * Theoritically, NET3 check it before sending a packet to the driver, + * but in fact it never do that and pool continuously. + * As the watchdog will abort too long transmissions, we are quite safe... + */ + + netif_stop_queue(dev); + + { + short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; + unsigned char* buf = skb->data; + + if (netwave_hw_xmit( buf, length, dev) == 1) { + /* Some error, let's make them call us another time? */ + netif_start_queue(dev); + } + dev->trans_start = jiffies; + } + dev_kfree_skb(skb); + + return 0; +} /* netwave_start_xmit */ + +/* + * Function netwave_interrupt (irq, dev_id, regs) + * + * This function is the interrupt handler for the Netwave card. This + * routine will be called whenever: + * 1. A packet is received. + * 2. A packet has successfully been transferred and the unit is + * ready to transmit another packet. + * 3. A command has completed execution. + */ +static void netwave_interrupt(int irq, void* dev_id, struct pt_regs *regs) { + ioaddr_t iobase; + u_char *ramBase; + struct net_device *dev = (struct net_device *)dev_id; + struct netwave_private *priv = dev->priv; + dev_link_t *link = &priv->link; + int i; + + if (!netif_device_present(dev)) + return; + + iobase = dev->base_addr; + ramBase = priv->ramBase; + + /* Now find what caused the interrupt, check while interrupts ready */ + for (i = 0; i < 10; i++) { + u_char status; + + wait_WOC(iobase); + if (!(inb(iobase+NETWAVE_REG_CCSR) & 0x02)) + break; /* None of the interrupt sources asserted */ + + status = inb(iobase + NETWAVE_REG_ASR); + + if (!DEV_OK(link)) { + DEBUG(1, "netwave_interrupt: Interrupt with status 0x%x " + "from removed or suspended card!\n", status); + break; + } + + /* RxRdy */ + if (status & 0x80) { + netwave_rx(dev); + /* wait_WOC(iobase); */ + /* RxRdy cannot be reset directly by the host */ + } + /* RxErr */ + if (status & 0x40) { + u_char rser; + + rser = readb(ramBase + NETWAVE_EREG_RSER); + + if (rser & 0x04) { + ++priv->stats.rx_dropped; + ++priv->stats.rx_crc_errors; + } + if (rser & 0x02) + ++priv->stats.rx_frame_errors; + + /* Clear the RxErr bit in RSER. RSER+4 is the + * write part. Also clear the RxCRC (0x04) and + * RxBig (0x02) bits if present */ + wait_WOC(iobase); + writeb(0x40 | (rser & 0x06), ramBase + NETWAVE_EREG_RSER + 4); + + /* Write bit 6 high to ASCC to clear RxErr in ASR, + * WOC must be set first! + */ + wait_WOC(iobase); + writeb(0x40, ramBase + NETWAVE_EREG_ASCC); + + /* Remember to count up priv->stats on error packets */ + ++priv->stats.rx_errors; + } + /* TxDN */ + if (status & 0x20) { + int txStatus; + + txStatus = readb(ramBase + NETWAVE_EREG_TSER); + DEBUG(3, "Transmit done. TSER = %x id %x\n", + txStatus, readb(ramBase + NETWAVE_EREG_TSER + 1)); + + if (txStatus & 0x20) { + /* Transmitting was okay, clear bits */ + wait_WOC(iobase); + writeb(0x2f, ramBase + NETWAVE_EREG_TSER + 4); + ++priv->stats.tx_packets; + } + + if (txStatus & 0xd0) { + if (txStatus & 0x80) { + ++priv->stats.collisions; /* Because of /proc/net/dev*/ + /* ++priv->stats.tx_aborted_errors; */ + /* printk("Collision. %ld\n", jiffies - dev->trans_start); */ + } + if (txStatus & 0x40) + ++priv->stats.tx_carrier_errors; + /* 0x80 TxGU Transmit giveup - nine times and no luck + * 0x40 TxNOAP No access point. Discarded packet. + * 0x10 TxErr Transmit error. Always set when + * TxGU and TxNOAP is set. (Those are the only ones + * to set TxErr). + */ + DEBUG(3, "netwave_interrupt: TxDN with error status %x\n", + txStatus); + + /* Clear out TxGU, TxNOAP, TxErr and TxTrys */ + wait_WOC(iobase); + writeb(0xdf & txStatus, ramBase+NETWAVE_EREG_TSER+4); + ++priv->stats.tx_errors; + } + DEBUG(3, "New status is TSER %x ASR %x\n", + readb(ramBase + NETWAVE_EREG_TSER), + inb(iobase + NETWAVE_REG_ASR)); + + netif_wake_queue(dev); + } + /* TxBA, this would trigger on all error packets received */ + /* if (status & 0x01) { + DEBUG(4, "Transmit buffers available, %x\n", status); + } + */ + } +} /* netwave_interrupt */ + +/* + * Function netwave_watchdog (a) + * + * Watchdog : when we start a transmission, we set a timer in the + * kernel. If the transmission complete, this timer is disabled. If + * it expire, we reset the card. + * + */ +static void netwave_watchdog(struct net_device *dev) { + + DEBUG(1, "%s: netwave_watchdog: watchdog timer expired\n", dev->name); + netwave_reset(dev); + dev->trans_start = jiffies; + netif_wake_queue(dev); +} /* netwave_watchdog */ + +static struct net_device_stats *netwave_get_stats(struct net_device *dev) { + netwave_private *priv = (netwave_private*)dev->priv; + + update_stats(dev); + + DEBUG(2, "netwave: SPCQ %x SPU %x LIF %x ISPLQ %x MHS %x rxtx %x" + " %x tx %x %x %x %x\n", + readb(priv->ramBase + NETWAVE_EREG_SPCQ), + readb(priv->ramBase + NETWAVE_EREG_SPU), + readb(priv->ramBase + NETWAVE_EREG_LIF), + readb(priv->ramBase + NETWAVE_EREG_ISPLQ), + readb(priv->ramBase + NETWAVE_EREG_MHS), + readb(priv->ramBase + NETWAVE_EREG_EC + 0xe), + readb(priv->ramBase + NETWAVE_EREG_EC + 0xf), + readb(priv->ramBase + NETWAVE_EREG_EC + 0x18), + readb(priv->ramBase + NETWAVE_EREG_EC + 0x19), + readb(priv->ramBase + NETWAVE_EREG_EC + 0x1a), + readb(priv->ramBase + NETWAVE_EREG_EC + 0x1b)); + + return &priv->stats; +} + +static void update_stats(struct net_device *dev) { + unsigned long flags; + + save_flags(flags); + cli(); + +/* netwave_private *priv = (netwave_private*) dev->priv; + priv->stats.rx_packets = readb(priv->ramBase + 0x18e); + priv->stats.tx_packets = readb(priv->ramBase + 0x18f); */ + + restore_flags(flags); +} + +static int netwave_rx(struct net_device *dev) { + netwave_private *priv = (netwave_private*)(dev->priv); + u_char *ramBase = priv->ramBase; + ioaddr_t iobase = dev->base_addr; + u_char rxStatus; + struct sk_buff *skb = NULL; + unsigned int curBuffer, + rcvList; + int rcvLen; + int tmpcount = 0; + int dataCount, dataOffset; + int i; + u_char *ptr; + + DEBUG(3, "xinw_rx: Receiving ... \n"); + + /* Receive max 10 packets for now. */ + for (i = 0; i < 10; i++) { + /* Any packets? */ + wait_WOC(iobase); + rxStatus = readb(ramBase + NETWAVE_EREG_RSER); + if ( !( rxStatus & 0x80)) /* No more packets */ + break; + + /* Check if multicast/broadcast or other */ + /* multicast = (rxStatus & 0x20); */ + + /* The receive list pointer and length of the packet */ + wait_WOC(iobase); + rcvLen = get_int16( ramBase + NETWAVE_EREG_RDP); + rcvList = get_uint16( ramBase + NETWAVE_EREG_RDP + 2); + + if (rcvLen < 0) { + printk(KERN_DEBUG "netwave_rx: Receive packet with len %d\n", + rcvLen); + return 0; + } + + skb = dev_alloc_skb(rcvLen+5); + if (skb == NULL) { + DEBUG(1, "netwave_rx: Could not allocate an sk_buff of " + "length %d\n", rcvLen); + ++priv->stats.rx_dropped; + /* Tell the adapter to skip the packet */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + return 0; + } + + skb_reserve( skb, 2); /* Align IP on 16 byte */ + skb_put( skb, rcvLen); + skb->dev = dev; + + /* Copy packet fragments to the skb data area */ + ptr = (u_char*) skb->data; + curBuffer = rcvList; + tmpcount = 0; + while ( tmpcount < rcvLen) { + /* Get length and offset of current buffer */ + dataCount = get_uint16( ramBase+curBuffer+2); + dataOffset = get_uint16( ramBase+curBuffer+4); + + copy_from_pc( ptr + tmpcount, + ramBase+curBuffer+dataOffset, dataCount); + + tmpcount += dataCount; + + /* Point to next buffer */ + curBuffer = get_uint16(ramBase + curBuffer); + } + + skb->protocol = eth_type_trans(skb,dev); + /* Queue packet for network layer */ + netif_rx(skb); + + dev->last_rx = jiffies; + priv->stats.rx_packets++; + priv->stats.rx_bytes += rcvLen; + + /* Got the packet, tell the adapter to skip it */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRP, ramBase + NETWAVE_EREG_CB + 0); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 1); + DEBUG(3, "Packet reception ok\n"); + } + return 0; +} + +static int netwave_open(struct net_device *dev) { + netwave_private *priv = dev->priv; + dev_link_t *link = &priv->link; + + DEBUG(1, "netwave_open: starting.\n"); + + if (!DEV_OK(link)) + return -ENODEV; + + link->open++; + MOD_INC_USE_COUNT; + + netif_start_queue(dev); + netwave_reset(dev); + + return 0; +} + +static int netwave_close(struct net_device *dev) { + netwave_private *priv = (netwave_private *)dev->priv; + dev_link_t *link = &priv->link; + + DEBUG(1, "netwave_close: finishing.\n"); + + link->open--; + netif_stop_queue(dev); + if (link->state & DEV_STALE_CONFIG) + mod_timer(&link->release, jiffies + HZ/20); + + MOD_DEC_USE_COUNT; + return 0; +} + +static int __init init_netwave_cs(void) { + servinfo_t serv; + + DEBUG(0, "%s\n", version); + + CardServices(GetCardServicesInfo, &serv); + if (serv.Revision != CS_RELEASE_CODE) { + printk("netwave_cs: Card Services release does not match!\n"); + return -1; + } + + register_pccard_driver(&dev_info, &netwave_attach, &netwave_detach); + + return 0; +} + +static void __exit exit_netwave_cs(void) { + DEBUG(1, "netwave_cs: unloading\n"); + + unregister_pccard_driver(&dev_info); + + /* Do some cleanup of the device list */ + netwave_flush_stale_links(); + if(dev_list != NULL) /* Critical situation */ + printk("netwave_cs: devices remaining when removing module\n"); +} + +module_init(init_netwave_cs); +module_exit(exit_netwave_cs); + +/* Set or clear the multicast filter for this adaptor. + num_addrs == -1 Promiscuous mode, receive all packets + num_addrs == 0 Normal mode, clear multicast list + num_addrs > 0 Multicast mode, receive normal and MC packets, and do + best-effort filtering. + */ +static void set_multicast_list(struct net_device *dev) +{ + ioaddr_t iobase = dev->base_addr; + u_char* ramBase = ((netwave_private*) dev->priv)->ramBase; + u_char rcvMode = 0; + +#ifdef PCMCIA_DEBUG + if (pc_debug > 2) { + static int old; + if (old != dev->mc_count) { + old = dev->mc_count; + DEBUG(0, "%s: setting Rx mode to %d addresses.\n", + dev->name, dev->mc_count); + } + } +#endif + + if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) { + /* Multicast Mode */ + rcvMode = rxConfRxEna + rxConfAMP + rxConfBcast; + } else if (dev->flags & IFF_PROMISC) { + /* Promiscous mode */ + rcvMode = rxConfRxEna + rxConfPro + rxConfAMP + rxConfBcast; + } else { + /* Normal mode */ + rcvMode = rxConfRxEna + rxConfBcast; + } + + /* printk("netwave set_multicast_list: rcvMode to %x\n", rcvMode);*/ + /* Now set receive mode */ + wait_WOC(iobase); + writeb(NETWAVE_CMD_SRC, ramBase + NETWAVE_EREG_CB + 0); + writeb(rcvMode, ramBase + NETWAVE_EREG_CB + 1); + writeb(NETWAVE_CMD_EOC, ramBase + NETWAVE_EREG_CB + 2); +}