patch-2.3.23 linux/drivers/net/pcmcia/netwave_cs.c
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- Lines: 1710
- Date:
Wed Oct 20 21:33:12 1999
- Orig file:
v2.3.22/linux/drivers/net/pcmcia/netwave_cs.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.22/linux/drivers/net/pcmcia/netwave_cs.c linux/drivers/net/pcmcia/netwave_cs.c
@@ -0,0 +1,1709 @@
+/*********************************************************************
+ *
+ * Filename: netwave_cs.c
+ * Version: 0.4.1
+ * Description: Netwave AirSurfer Wireless LAN PC Card driver
+ * Status: Experimental.
+ * Authors: John Markus Bjørndalen <johnm@cs.uit.no>
+ * Dag Brattli <dagb@cs.uit.no>
+ * David Hinds <dhinds@hyper.stanford.edu>
+ * Created at: A long time ago!
+ * Modified at: Mon Nov 10 11:54:37 1997
+ * Modified by: Dag Brattli <dagb@cs.uit.no>
+ *
+ * Copyright (c) 1997 University of Tromsø, Norway
+ *
+ * Revision History:
+ *
+ * 08-Nov-97 15:14:47 John Markus Bjørndalen <johnm@cs.uit.no>
+ * - 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 <dagb@cs.uit.no>
+ * - 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 <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <linux/errno.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#ifdef CONFIG_NET_RADIO
+#include <linux/wireless.h>
+#endif
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/mem_op.h>
+
+#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 20
+#define WATCHDOG_JIFFIES 32
+
+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 */
+
+/*static int netwave_debug = 0;*/
+
+/*
+ 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 = 0;
+
+/* 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");
+
+/*====================================================================*/
+
+/* 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(u_long); /* Transmission watchdog */
+
+/* Statistics */
+static void update_stats(struct net_device *dev);
+static struct enet_statistics *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 = NULL;
+
+/*
+ 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.
+*/
+
+#define SIOCGIPSNAP SIOCDEVPRIVATE /* Site Survey Snapshot */
+/*#define SIOCGIPQTHR SIOCDEVPRIVATE + 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_node_t node;
+ u_char *ramBase;
+ int timeoutCounter;
+ int lastExec;
+ struct timer_list watchdog; /* To avoid blocking state */
+ struct site_survey nss;
+ struct enet_statistics stats;
+#ifdef WIRELESS_EXT
+ struct iw_statistics iw_stats; /* Wireless stats */
+#endif
+} netwave_private;
+
+#ifdef NETWAVE_STATS
+static struct enet_statistics *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_init (dev)
+ *
+ * We never need to do anything when a device is "initialized"
+ * by the net software, because we only register already-found cards.
+ */
+int netwave_init(struct net_device *dev)
+{
+ /* We do all the initialization of this in netwave_attach instead */
+ return 0;
+}
+
+/*
+ * 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 */
+ link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
+ memset(link, 0, sizeof(struct dev_link_t));
+ 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;
+
+ /* Allocate space for private device-specific data */
+ dev = kmalloc(sizeof(struct net_device), GFP_KERNEL);
+ memset(dev, 0, sizeof(struct net_device));
+
+ dev->priv = kmalloc(sizeof(netwave_private), GFP_KERNEL);
+ memset(dev->priv, 0, sizeof(netwave_private));
+
+ /* Set the watchdog timer */
+ priv = (netwave_private *) dev->priv;
+ priv->watchdog.function = &netwave_watchdog;
+ priv->watchdog.data = (unsigned long) dev;
+
+ /* 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;
+
+ ether_setup(dev);
+ dev->name = ((struct netwave_private *)dev->priv)->node.dev_name;
+ dev->init = &netwave_init;
+ dev->open = &netwave_open;
+ dev->stop = &netwave_close;
+ dev->tbusy = 1;
+ link->priv = 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)
+{
+ dev_link_t **linkp;
+ long flags;
+
+ DEBUG(0, "netwave_detach(0x%p)\n", link);
+
+ save_flags(flags);
+ if (link->state & DEV_RELEASE_PENDING) {
+ del_timer(&link->release);
+ link->state &= ~DEV_RELEASE_PENDING;
+ }
+ cli();
+ restore_flags(flags);
+
+ /*
+ 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().
+ */
+ 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->priv) {
+ struct net_device *dev = link->priv;
+ if (link->dev != NULL)
+ unregister_netdev(dev);
+ link->dev = NULL;
+ if (dev->priv)
+ kfree(dev->priv);
+ kfree(link->priv);
+ }
+ kfree(link);
+
+} /* 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 (useless : its constant...) */
+ wrq->u.data.length = sizeof(struct iw_range);
+
+ /* 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;
+ tuple_t tuple;
+ cisparse_t parse;
+ struct net_device *dev;
+ int i, j, last_ret, last_fn;
+ u_char buf[64];
+ win_req_t req;
+ memreq_t mem;
+ u_char *ramBase = NULL;
+ /* modwin_t mod;
+ short iobase, *phys_addr;
+ */
+ handle = link->handle;
+ dev = link->priv;
+
+ 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 (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;
+ dev->tbusy = 0;
+ if (register_netdev(dev) != 0) {
+ printk(KERN_DEBUG "netwave_cs: register_netdev() failed\n");
+ goto failed;
+ }
+
+ link->state &= ~DEV_CONFIG_PENDING;
+
+ link->dev = &((netwave_private *)dev->priv)->node;
+
+ /* 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);
+ return;
+} /* 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;
+ struct net_device *dev = 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(((netwave_private *)dev->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_RELEASE_PENDING | 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;
+ struct net_device *dev = link->priv;
+
+ 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) {
+ dev->tbusy = 1; dev->start = 0;
+ /* ((netwave_private *)link->priv)->block = 1; */
+ link->release.expires = jiffies + 5;
+ add_timer(&link->release);
+ }
+ 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) {
+ dev->tbusy = 1; dev->start = 0;
+ }
+ 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);
+ dev->tbusy = 0; dev->start = 1;
+ }
+ }
+ 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;
+
+ /* If watchdog was activated, kill it ! */
+ del_timer(&priv->watchdog);
+
+ /* 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);
+ 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);
+
+ /* If watchdog not already active, activate it... */
+ if(priv->watchdog.prev == (struct timer_list *) NULL) {
+
+ /* set timer to expire in WATCHDOG_JIFFIES */
+ priv->watchdog.expires = jiffies + WATCHDOG_JIFFIES;
+ add_timer(&priv->watchdog);
+ }
+ 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...
+ */
+
+ if (dev->tbusy) {
+ /* Handled by watchdog */
+ return 1;
+
+ /* If we get here, some higher level has decided we are broken.
+ There should really be a 'kick me' function call instead.
+ */
+ /*int tickssofar = jiffies - dev->trans_start;*/
+ /* printk("xmit called with busy. tickssofar %d\n", tickssofar); */
+ /*if (tickssofar < TX_TIMEOUT)
+ return 1;
+ */
+ /* Should also detect if the kernel tries to xmit
+ * on a stopped card.
+ */
+
+ /*if (netwave_debug > 0)
+ printk(KERN_DEBUG "%s timed out.\n", dev->name);
+ netwave_reset(dev);
+ dev->trans_start = jiffies;
+ dev->tbusy = 0;*/
+ }
+
+ /* Sending a NULL skb means some higher layer thinks we've missed an
+ * tx-done interrupt. Caution: dev_tint() handles the cli()/sti()
+ * itself.
+ */
+
+ /* Block a timer-based transmit from overlapping. This could
+ * better be done with atomic_swap(1, dev->tbusy, but set_bit()
+ * works as well
+ */
+ if ( test_and_set_bit(0, (void*)&dev->tbusy) != 0)
+ printk("%s: Transmitter access conflict.\n", dev->name);
+ else {
+ 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? */
+ dev->tbusy = 0;
+ }
+ 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 transfered 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;
+ int i;
+ dev_link_t *link;
+
+ if ((dev == NULL) | (!dev->start))
+ return;
+
+ priv = (netwave_private *)dev->priv;
+
+ if (dev->interrupt) {
+ printk("%s: re-entering the interrupt handler.\n", dev->name);
+ return;
+ }
+ dev->interrupt = 1;
+
+ /* Find the correct dev_link_t */
+ for (link = dev_list; NULL != link; link = link->next)
+ if (dev == link->priv) break;
+
+ 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 ( ! (link->state & DEV_PRESENT) || link->state & DEV_SUSPEND ) {
+ DEBUG( 1, "netwave_interupt: 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));
+
+ /* If watchdog was activated, kill it ! */
+ del_timer(&priv->watchdog);
+
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ /* TxBA, this would trigger on all error packets received */
+ /* if (status & 0x01) {
+ if (netwave_debug > 3)
+ printk(KERN_DEBUG "Transmit buffers available, %x\n", status);
+ }
+ */
+ }
+ /* done.. */
+ dev->interrupt = 0;
+ return;
+} /* 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(u_long a) {
+ struct net_device *dev;
+ ioaddr_t iobase;
+
+ dev = (struct net_device *) a;
+ iobase = dev->base_addr;
+
+ DEBUG( 1, "%s: netwave_watchdog: watchdog timer expired\n", dev->name);
+
+ netwave_reset(dev);
+
+ /* We are not waiting anymore... */
+ dev->tbusy = 0;
+
+} /* netwave_watchdog */
+
+static struct enet_statistics *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);
+
+ /* 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");
+
+ priv->stats.rx_packets++;
+
+ priv->stats.rx_bytes += skb->len;
+ }
+ return 0;
+}
+
+static int netwave_open(struct net_device *dev) {
+ dev_link_t *link;
+
+ DEBUG(1, "netwave_open: starting.\n");
+
+ for (link = dev_list; link; link = link->next)
+ if (link->priv == dev) break;
+
+ if (!DEV_OK(link))
+ return -ENODEV;
+
+ link->open++;
+ MOD_INC_USE_COUNT;
+
+ dev->interrupt = 0; dev->tbusy = 0; dev->start = 1;
+ netwave_reset(dev);
+
+ return 0;
+}
+
+static int netwave_close(struct net_device *dev) {
+ dev_link_t *link;
+ netwave_private *priv = (netwave_private *) dev->priv;
+
+ DEBUG(1, "netwave_close: finishing.\n");
+
+ for (link = dev_list; link; link = link->next)
+ if (link->priv == dev) break;
+ if (link == NULL)
+ return -ENODEV;
+
+ /* If watchdog was activated, kill it ! */
+ del_timer(&priv->watchdog);
+
+ link->open--;
+ dev->start = 0;
+ if (link->state & DEV_STALE_CONFIG) {
+ link->release.expires = jiffies + 5;
+ link->state |= DEV_RELEASE_PENDING;
+ add_timer(&link->release);
+ }
+
+ 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 = 0;
+ 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);
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)