diff options
Diffstat (limited to 'drivers/isdn/hisax/avma1_cs.c')
| -rw-r--r-- | drivers/isdn/hisax/avma1_cs.c | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/avma1_cs.c b/drivers/isdn/hisax/avma1_cs.c new file mode 100644 index 0000000..23560c8 --- /dev/null +++ b/drivers/isdn/hisax/avma1_cs.c @@ -0,0 +1,323 @@ +/* + * PCMCIA client driver for AVM A1 / Fritz!PCMCIA + * + * Author Carsten Paeth + * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de> + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + */ + +#include <linux/module.h> + + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/ptrace.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <asm/io.h> +#include <asm/system.h> + +#include <pcmcia/cs_types.h> +#include <pcmcia/cs.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/ds.h> +#include "hisax_cfg.h" + +MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards"); +MODULE_AUTHOR("Carsten Paeth"); +MODULE_LICENSE("GPL"); + +/* + 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_param(pc_debug, int, 0); +#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args); +static char *version = +"avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)"; +#else +#define DEBUG(n, args...) +#endif + +/*====================================================================*/ + +/* Parameters that can be set with 'insmod' */ + +static int isdnprot = 2; + +module_param(isdnprot, int, 0); + +/*====================================================================*/ + +/* + 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 avma1cs_config(struct pcmcia_device *link); +static void avma1cs_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 avma1cs_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; + +/*====================================================================== + + avma1cs_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 avma1cs_probe(struct pcmcia_device *p_dev) +{ + local_info_t *local; + + DEBUG(0, "avma1cs_attach()\n"); + + /* Allocate space for private device-specific data */ + local = kzalloc(sizeof(local_info_t), GFP_KERNEL); + if (!local) + return -ENOMEM; + + p_dev->priv = 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 = 16; + p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16; + p_dev->io.IOAddrLines = 5; + + /* Interrupt setup */ + p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE; + p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; + + p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID; + + /* 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; + + return avma1cs_config(p_dev); +} /* avma1cs_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 avma1cs_detach(struct pcmcia_device *link) +{ + DEBUG(0, "avma1cs_detach(0x%p)\n", link); + avma1cs_release(link); + kfree(link->priv); +} /* avma1cs_detach */ + +/*====================================================================== + + avma1cs_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 avma1cs_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 "avma1_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 avma1cs_config(struct pcmcia_device *link) +{ + local_info_t *dev; + int i; + char devname[128]; + IsdnCard_t icard; + int busy = 0; + + dev = link->priv; + + DEBUG(0, "avma1cs_config(0x%p)\n", link); + + devname[0] = 0; + if (link->prod_id[1]) + strlcpy(devname, link->prod_id[1], sizeof(devname)); + + if (pcmcia_loop_config(link, avma1cs_configcheck, NULL)) + return -ENODEV; + + do { + /* + * allocate an interrupt line + */ + i = pcmcia_request_irq(link, &link->irq); + if (i != 0) { + cs_error(link, RequestIRQ, i); + /* undo */ + pcmcia_disable_device(link); + break; + } + + /* + * configure the PCMCIA socket + */ + i = pcmcia_request_configuration(link, &link->conf); + if (i != 0) { + cs_error(link, RequestConfiguration, i); + 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. */ + + strcpy(dev->node.dev_name, "A1"); + dev->node.major = 45; + dev->node.minor = 0; + link->dev_node = &dev->node; + + /* If any step failed, release any partially configured state */ + if (i != 0) { + avma1cs_release(link); + return -ENODEV; + } + + printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n", + link->io.BasePort1, link->irq.AssignedIRQ); + + icard.para[0] = link->irq.AssignedIRQ; + icard.para[1] = link->io.BasePort1; + icard.protocol = isdnprot; + icard.typ = ISDN_CTYPE_A1_PCMCIA; + + i = hisax_init_pcmcia(link, &busy, &icard); + if (i < 0) { + printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1); + avma1cs_release(link); + return -ENODEV; + } + dev->node.minor = i; + + return 0; +} /* avma1cs_config */ + +/*====================================================================== + + After a card is removed, avma1cs_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 avma1cs_release(struct pcmcia_device *link) +{ + local_info_t *local = link->priv; + + DEBUG(0, "avma1cs_release(0x%p)\n", link); + + /* now unregister function with hisax */ + HiSax_closecard(local->node.minor); + + pcmcia_disable_device(link); +} /* avma1cs_release */ + + +static struct pcmcia_device_id avma1cs_ids[] = { + PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb), + PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b), + PCMCIA_DEVICE_NULL +}; +MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids); + +static struct pcmcia_driver avma1cs_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "avma1_cs", + }, + .probe = avma1cs_probe, + .remove = avma1cs_detach, + .id_table = avma1cs_ids, +}; + +/*====================================================================*/ + +static int __init init_avma1_cs(void) +{ + return(pcmcia_register_driver(&avma1cs_driver)); +} + +static void __exit exit_avma1_cs(void) +{ + pcmcia_unregister_driver(&avma1cs_driver); +} + +module_init(init_avma1_cs); +module_exit(exit_avma1_cs); |
