/* * Aironet 4500 Pcmcia driver * * Elmer Joandi, Januar 1999 * Copyright Elmer Joandi, all rights restricted * * * Revision 0.1 ,started 30.12.1998 * * */ static const char *awc_version = "aironet4500_cs.c v0.1 1/1/99 Elmer Joandi, elmer@ylenurme.ee.\n"; #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if LINUX_VERSION_CODE < 0x20300 #ifdef MODULE #include #endif #endif #include #include "../aironet4500.h" static u_int irq_mask = 0x5eF8; static int awc_ports[] = {0x140,0x100,0xc0, 0x80 }; #if LINUX_VERSION_CODE > 0x20100 MODULE_PARM(irq_mask, "i"); #endif #define RUN_AT(x) (jiffies+(x)) #ifdef PCMCIA_DEBUG static int pc_debug = PCMCIA_DEBUG; MODULE_PARM(pc_debug, "i"); #define PC_DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) static char *version = "aironet4500_cs.c v0.1 1/1/99 Elmer Joandi, elmer@ylenurme.ee.\n"; #else #define PC_DEBUG(n, args...) #endif /* Index of functions. */ static dev_info_t dev_info = "aironet4500_cs"; static dev_link_t *awc_attach(void); static void awc_detach(dev_link_t *); static void awc_release(u_long arg); static int awc_event(event_t event, int priority, event_callback_args_t *args); static dev_link_t *dev_list = NULL; static void cs_error(client_handle_t handle, int func, int ret) { #if CS_RELEASE_CODE < 0x2911 CardServices(ReportError, dev_info, (void *)func, (void *)ret); #else error_info_t err = { func, ret }; CardServices(ReportError, handle, &err); #endif } #define CFG_CHECK(fn, args...) if (CardServices(fn, args) != 0) goto next_entry static void flush_stale_links(void) { dev_link_t *link, *next; for (link = dev_list; link; link = next) { next = link->next; if (link->state & DEV_STALE_LINK) awc_detach(link); } } /* We never need to do anything when a awc device is "initialized" by the net software, because we only register already-found cards. */ static int awc_pcmcia_init(struct net_device *dev) { return awc_init(dev); } static int awc_pcmcia_open(struct net_device *dev) { dev_link_t *link; int status; for (link = dev_list; link; link = link->next) if (link->priv == dev) break; if (!DEV_OK(link)) return -ENODEV; status = awc_open(dev); if (!status ) link->open++; return status; } static int awc_pcmcia_close(struct net_device *dev) { // int ioaddr = dev->base_addr; dev_link_t *link; int ret; for (link = dev_list; link; link = link->next) if (link->priv == dev) break; if (link == NULL) return -ENODEV; PC_DEBUG(2, "%s: closing device.\n", dev->name); link->open--; ret = awc_close(dev); if (link->state & DEV_STALE_CONFIG) { link->release.expires = RUN_AT( HZ/20 ); link->state |= DEV_RELEASE_PENDING; add_timer(&link->release); } return ret; } /* awc_attach() creates an "instance" of the driver, allocating local data structures for one device. The device is registered with Card Services. */ static dev_link_t *awc_attach(void) { client_reg_t client_reg; dev_link_t *link = NULL; struct net_device *dev = NULL; int ret; PC_DEBUG(0, "awc_attach()\n"); flush_stale_links(); /* Create the PC card device object. */ link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL); memset(link, 0, sizeof(struct dev_link_t)); link->dev = kmalloc(sizeof(struct dev_node_t), GFP_KERNEL); memset(link->dev, 0, sizeof(struct dev_node_t)); link->release.function = &awc_release; link->release.data = (u_long)link; // link->io.NumPorts1 = 32; link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; // link->io.IOAddrLines = 5; link->irq.Attributes = IRQ_HANDLE_PRESENT ; // |IRQ_TYPE_EXCLUSIVE ; link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; link->irq.IRQInfo2 = irq_mask; link->irq.Handler = &awc_interrupt; 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; /* Create the network device object. */ dev = kmalloc(sizeof(struct net_device ), GFP_KERNEL); memset(dev,0,sizeof(struct net_device)); // dev = init_etherdev(0, sizeof(struct awc_private) ); if (!dev ) { printk(KERN_CRIT "out of mem on dev alloc \n"); kfree(link->dev); kfree(link); return NULL; }; dev->priv = kmalloc(sizeof(struct awc_private), GFP_KERNEL); if (!dev->priv ) {printk(KERN_CRIT "out of mem on dev priv alloc \n"); return NULL;}; memset(dev->priv,0,sizeof(struct awc_private)); // link->dev->minor = dev->minor; // link->dev->major = dev->major; /* The 4500-specific entries in the device structure. */ // dev->tx_queue_len = tx_queue_len; dev->hard_start_xmit = &awc_start_xmit; // dev->set_config = &awc_config_misiganes,aga mitte awc_config; dev->get_stats = &awc_get_stats; // dev->set_multicast_list = &awc_set_multicast_list; strcpy(dev->name, ((struct awc_private *)dev->priv)->node.dev_name); ether_setup(dev); dev->init = &awc_pcmcia_init; dev->open = &awc_pcmcia_open; dev->stop = &awc_pcmcia_close; link->priv = dev; #if CS_RELEASE_CODE > 0x2911 link->irq.Instance = dev; #endif /* 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 = &awc_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); awc_detach(link); return NULL; } return link; } /* awc_attach */ /* 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 awc_detach(dev_link_t *link) { dev_link_t **linkp; long flags; int i=0; DEBUG(0, "awc_detach(0x%p)\n", link); /* Locate device structure */ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) if (*linkp == link) break; if (*linkp == NULL) return; save_flags(flags); cli(); if (link->state & DEV_RELEASE_PENDING) { del_timer(&link->release); link->state &= ~DEV_RELEASE_PENDING; } restore_flags(flags); if (link->state & DEV_CONFIG) { awc_release((u_long)link); if (link->state & DEV_STALE_CONFIG) { link->state |= DEV_STALE_LINK; return; } } if (link->handle) CardServices(DeregisterClient, link->handle); /* Unlink device structure, free bits */ *linkp = link->next; i=0; while ( i < MAX_AWCS) { if (!aironet4500_devices[i]) {i++; continue;} if (aironet4500_devices[i] == link->priv){ if (awc_proc_unset_fun) awc_proc_unset_fun(i); aironet4500_devices[i]=0; } i++; } if (link->priv) { //struct net_device *dev = link->priv; // dam dam damn mif (dev->priv) // kfree(dev->priv); kfree(link->priv); } kfree(link->dev); kfree(link); } /* awc_detach */ /* awc_pcmcia_config() is scheduled to run after a CARD_INSERTION event is received, to configure the PCMCIA socket, and to make the ethernet device available to the system. */ #define CS_CHECK(fn, args...) \ while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed static void awc_pcmcia_config(dev_link_t *link) { client_handle_t handle; struct net_device *dev; struct awc_private *lp; tuple_t tuple; int ii; cisparse_t parse; u_short buf[64]; int last_fn, last_ret, i = 0; // int ioaddr; u16 *phys_addr; int retval; handle = link->handle; dev = link->priv; phys_addr = (u16 *)dev->dev_addr; PC_DEBUG(0, "awc_pcmcia_config(0x%p)\n", link); tuple.Attributes = 0; tuple.DesiredTuple = CISTPL_CONFIG; CS_CHECK(GetFirstTuple, handle, &tuple); tuple.TupleData = (cisdata_t *)buf; tuple.TupleDataMax = 64; tuple.TupleOffset = 0; 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; tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; CS_CHECK(GetFirstTuple, handle, &tuple); while (1) { cistpl_cftable_entry_t dflt = { 0 }; cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); CFG_CHECK(GetTupleData, handle, &tuple); CFG_CHECK(ParseTuple, handle, &tuple, &parse); if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; if (cfg->index == 0) goto next_entry; link->conf.ConfigIndex = cfg->index; /* Use power settings for Vcc and Vpp if present */ /* Note that the CIS values need to be rescaled */ if (cfg->vcc.present & (1<conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000; else if (dflt.vcc.present & (1<conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000; if (cfg->vpp1.present & (1<conf.Vpp1 = link->conf.Vpp2 = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; else if (dflt.vpp1.present & (1<conf.Vpp1 = link->conf.Vpp2 = dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; /* Do we need to allocate an interrupt? */ if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) link->conf.Attributes |= CONF_ENABLE_IRQ; /* IO window settings */ link->io.NumPorts1 = link->io.NumPorts2 = 0; if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; if (!(io->flags & CISTPL_IO_8BIT)) link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; if (!(io->flags & CISTPL_IO_16BIT)) { link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; printk(KERN_CRIT "8-bit IO not supported on this aironet 4500 driver \n"); } link->io.BasePort1 = io->win[0].base; link->io.NumPorts1 = io->win[0].len; if (io->nwin > 1) { link->io.Attributes2 = link->io.Attributes1; link->io.BasePort2 = io->win[1].base; link->io.NumPorts2 = io->win[1].len; } } ii = 0; last_fn = RequestIO; while ((last_ret = CardServices(RequestIO, link->handle, &link->io)) ){ if (ii > 4) goto cs_failed; link->io.BasePort1 = awc_ports[ii]; ii++; }; break; next_entry: if (CardServices(GetNextTuple, handle, &tuple)) break; } if (link->conf.Attributes & CONF_ENABLE_IRQ){ ii = 0; last_fn = RequestIRQ; while ((last_ret = CardServices(RequestIRQ, link->handle, &link->irq)) ){ ii++; while (!(irq_mask & (1 << ii) ) && ii < 15) ii++; link->irq.IRQInfo2 = 1 << ii; if(ii > 15) goto cs_failed; printk("trying irq %d , mask %x \n",ii, link->irq.IRQInfo2); }; } CS_CHECK(RequestConfiguration, link->handle, &link->conf); dev->irq = link->irq.AssignedIRQ; dev->base_addr = link->io.BasePort1; awc_private_init( dev); retval = register_netdev(dev); if (retval != 0) { printk(KERN_NOTICE "awc_cs: register_netdev() failed for dev %x retval %x\n",(unsigned int)dev,retval); goto failed; } if(awc_pcmcia_init(dev)) goto failed; i=0; while (aironet4500_devices[i] && i < MAX_AWCS-1) i++; if (!aironet4500_devices[i]){ aironet4500_devices[i]=dev; if (awc_proc_set_fun) awc_proc_set_fun(i); } link->state &= ~DEV_CONFIG_PENDING; lp = (struct awc_private *)dev->priv; DEBUG(1,"pcmcia config complete on port %x \n",(unsigned int)dev->base_addr); return; cs_failed: cs_error(link->handle, last_fn, last_ret); link->dev=NULL; failed: awc_release((u_long)link); return; } /* awc_pcmcia_config */ /* After a card is removed, awc_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 awc_release(u_long arg) { dev_link_t *link = (dev_link_t *)arg; struct net_device *dev = link->priv; DEBUG(0, "awc_release(0x%p)\n", link); if (link->open) { DEBUG(1, "awc_cs: release postponed, '%s' still open\n", link->dev->dev_name); link->state |= DEV_STALE_CONFIG; return; } CardServices(ReleaseConfiguration, link->handle); CardServices(ReleaseIO, link->handle, &link->io); CardServices(ReleaseIRQ, link->handle, &link->irq); CardServices(ReleaseWindow, link->win); if (link->dev) unregister_netdev(dev); // link->dev = NULL; link->state &= ~DEV_CONFIG; if (link->state & DEV_STALE_LINK) awc_detach(link); } /* awc_release */ /* 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. */ static int awc_event(event_t event, int priority, event_callback_args_t *args) { dev_link_t *link = args->client_data; struct net_device *dev = link->priv; PC_DEBUG(1, "awc_event(0x%06x)\n", event); switch (event) { case CS_EVENT_CARD_REMOVAL: link->state &= ~DEV_PRESENT; if (link->state & DEV_CONFIG) { netif_device_detach(dev); link->release.expires = RUN_AT( HZ/20 ); add_timer(&link->release); } break; case CS_EVENT_CARD_INSERTION: link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; awc_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) { // awc_reset(dev); netif_device_attach(dev); } } break; } return 0; } /* awc_event */ static int __init aironet_cs_init(void) { servinfo_t serv; /* Always emit the version, before any failure. */ printk(KERN_INFO"%s", awc_version); PC_DEBUG(0, "%s\n", version); CardServices(GetCardServicesInfo, &serv); if (serv.Revision != CS_RELEASE_CODE) { printk(KERN_NOTICE "awc_cs: Card Services release " "does not match!\n"); return -1; } register_pcmcia_driver(&dev_info, &awc_attach, &awc_detach); return 0; } static void __exit aironet_cs_exit(void) { DEBUG(0, "awc_cs: unloading %c ",'\n'); unregister_pcmcia_driver(&dev_info); while (dev_list != NULL) { if (dev_list->state & DEV_CONFIG) awc_release((u_long)dev_list); awc_detach(dev_list); } // while (dev_list != NULL) // awc_detach(dev_list); } module_init(aironet_cs_init); module_exit(aironet_cs_exit);