/* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $ * * A PCMCIA client driver for AVM B1/M1/M2 * * Copyright 1999 by Carsten Paeth * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /*====================================================================*/ MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2"); MODULE_AUTHOR("Carsten Paeth"); MODULE_LICENSE("GPL"); /*====================================================================*/ /* The event() function is this driver's Card Services event handler. It will be called by Card Services when an appropriate card status event is received. The config() and release() entry points are used to configure or release a socket, in response to card insertion and ejection events. They are invoked from the skeleton event handler. */ static int avmcs_config(struct pcmcia_device *link); static void avmcs_release(struct pcmcia_device *link); /* The attach() and detach() entry points are used to create and destroy "instances" of the driver, where each instance represents everything needed to manage one actual PCMCIA card. */ static void avmcs_detach(struct pcmcia_device *p_dev); /* A linked list of "instances" of the skeleton device. Each actual PCMCIA card corresponds to one device instance, and is described by one struct pcmcia_device 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 struct pcmcia_device pointers, where minor device numbers are used to derive the corresponding array index. */ /* 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 struct pcmcia_device structure. We allocate them in the card's private data structure, because they generally can't be allocated dynamically. */ typedef struct local_info_t { dev_node_t node; } local_info_t; /*====================================================================== avmcs_attach() 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 int avmcs_probe(struct pcmcia_device *p_dev) { local_info_t *local; /* The io structure describes IO port mapping */ p_dev->io.NumPorts1 = 16; p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; p_dev->io.NumPorts2 = 0; /* General socket configuration */ p_dev->conf.Attributes = CONF_ENABLE_IRQ; p_dev->conf.IntType = INT_MEMORY_AND_IO; p_dev->conf.ConfigIndex = 1; p_dev->conf.Present = PRESENT_OPTION; /* Allocate space for private device-specific data */ local = kzalloc(sizeof(local_info_t), GFP_KERNEL); if (!local) goto err; p_dev->priv = local; return avmcs_config(p_dev); err: return -ENOMEM; } /* avmcs_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 avmcs_detach(struct pcmcia_device *link) { avmcs_release(link); kfree(link->priv); } /* avmcs_detach */ /*====================================================================== avmcs_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. ======================================================================*/ static int avmcs_configcheck(struct pcmcia_device *p_dev, cistpl_cftable_entry_t *cf, cistpl_cftable_entry_t *dflt, unsigned int vcc, void *priv_data) { if (cf->io.nwin <= 0) return -ENODEV; p_dev->io.BasePort1 = cf->io.win[0].base; p_dev->io.NumPorts1 = cf->io.win[0].len; p_dev->io.NumPorts2 = 0; printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n", p_dev->io.BasePort1, p_dev->io.BasePort1+p_dev->io.NumPorts1-1); return pcmcia_request_io(p_dev, &p_dev->io); } static int avmcs_config(struct pcmcia_device *link) { local_info_t *dev; int i = -1; char devname[128]; int cardtype; int (*addcard)(unsigned int port, unsigned irq); dev = link->priv; devname[0] = 0; if (link->prod_id[1]) strlcpy(devname, link->prod_id[1], sizeof(devname)); /* * find IO port */ if (pcmcia_loop_config(link, avmcs_configcheck, NULL)) return -ENODEV; do { if (!link->irq) { /* undo */ pcmcia_disable_device(link); break; } /* * configure the PCMCIA socket */ i = pcmcia_request_configuration(link, &link->conf); if (i != 0) { pcmcia_disable_device(link); break; } } while (0); /* At this point, the dev_node_t structure(s) should be initialized and arranged in a linked list at link->dev. */ if (devname[0]) { char *s = strrchr(devname, ' '); if (!s) s = devname; else s++; strcpy(dev->node.dev_name, s); if (strcmp("M1", s) == 0) { cardtype = AVM_CARDTYPE_M1; } else if (strcmp("M2", s) == 0) { cardtype = AVM_CARDTYPE_M2; } else { cardtype = AVM_CARDTYPE_B1; } } else { strcpy(dev->node.dev_name, "b1"); cardtype = AVM_CARDTYPE_B1; } dev->node.major = 64; dev->node.minor = 0; link->dev_node = &dev->node; /* If any step failed, release any partially configured state */ if (i != 0) { avmcs_release(link); return -ENODEV; } switch (cardtype) { case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break; case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break; default: case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break; } if ((i = (*addcard)(link->io.BasePort1, link->irq)) < 0) { printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n", dev->node.dev_name, link->io.BasePort1, link->irq); avmcs_release(link); return -ENODEV; } dev->node.minor = i; return 0; } /* avmcs_config */ /*====================================================================== After a card is removed, avmcs_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 avmcs_release(struct pcmcia_device *link) { b1pcmcia_delcard(link->io.BasePort1, link->irq); pcmcia_disable_device(link); } /* avmcs_release */ static struct pcmcia_device_id avmcs_ids[] = { PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335), PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430), PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a), PCMCIA_DEVICE_NULL }; MODULE_DEVICE_TABLE(pcmcia, avmcs_ids); static struct pcmcia_driver avmcs_driver = { .owner = THIS_MODULE, .drv = { .name = "avm_cs", }, .probe = avmcs_probe, .remove = avmcs_detach, .id_table = avmcs_ids, }; static int __init avmcs_init(void) { return pcmcia_register_driver(&avmcs_driver); } static void __exit avmcs_exit(void) { pcmcia_unregister_driver(&avmcs_driver); } module_init(avmcs_init); module_exit(avmcs_exit);