| /* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */ |
| /*====================================================================== |
| |
| A teles S0 PCMCIA client driver |
| |
| Based on skeleton by David Hinds, dhinds@allegro.stanford.edu |
| Written by Christof Petig, christof.petig@wtal.de |
| |
| Also inspired by ELSA PCMCIA driver |
| by Klaus Lichtenwalder <Lichtenwalder@ACM.org> |
| |
| Extentions to new hisax_pcmcia by Karsten Keil |
| |
| minor changes to be compatible with kernel 2.4.x |
| by Jan.Schubert@GMX.li |
| |
| ======================================================================*/ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/ptrace.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/ioport.h> |
| #include <asm/io.h> |
| #include <asm/system.h> |
| |
| #include <pcmcia/cs_types.h> |
| #include <pcmcia/cs.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/cisreg.h> |
| #include <pcmcia/ds.h> |
| #include "hisax_cfg.h" |
| |
| MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards"); |
| MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de"); |
| 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 = |
| "teles_cs.c 2.10 2002/07/30 22:23:34 kkeil"; |
| #else |
| #define DEBUG(n, args...) |
| #endif |
| |
| /*====================================================================*/ |
| |
| /* Parameters that can be set with 'insmod' */ |
| |
| static int protocol = 2; /* EURO-ISDN Default */ |
| module_param(protocol, 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 teles_cs event |
| handler. |
| */ |
| |
| static int teles_cs_config(struct pcmcia_device *link); |
| static void teles_cs_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 teles_detach(struct pcmcia_device *p_dev); |
| |
| /* |
| A linked list of "instances" of the teles_cs 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 shouldn't be allocated dynamically. |
| In this case, we also provide a flag to indicate if a device is |
| "stopped" due to a power management event, or card ejection. The |
| device IO routines can use a flag like this to throttle IO to a |
| card that is not ready to accept it. |
| */ |
| |
| typedef struct local_info_t { |
| struct pcmcia_device *p_dev; |
| dev_node_t node; |
| int busy; |
| int cardnr; |
| } local_info_t; |
| |
| /*====================================================================== |
| |
| teles_attach() creates an "instance" of the driver, allocatingx |
| 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 teles_probe(struct pcmcia_device *link) |
| { |
| local_info_t *local; |
| |
| DEBUG(0, "teles_attach()\n"); |
| |
| /* Allocate space for private device-specific data */ |
| local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
| if (!local) return -ENOMEM; |
| local->cardnr = -1; |
| |
| local->p_dev = link; |
| link->priv = local; |
| |
| /* Interrupt setup */ |
| link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; |
| link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID; |
| link->irq.Handler = NULL; |
| |
| /* |
| General socket configuration defaults can go here. In this |
| client, we assume very little, and rely on the CIS for almost |
| everything. In most clients, many details (i.e., number, sizes, |
| and attributes of IO windows) are fixed by the nature of the |
| device, and can be hard-wired here. |
| */ |
| link->io.NumPorts1 = 96; |
| link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| link->io.IOAddrLines = 5; |
| |
| link->conf.Attributes = CONF_ENABLE_IRQ; |
| link->conf.IntType = INT_MEMORY_AND_IO; |
| |
| return teles_cs_config(link); |
| } /* teles_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 teles_detach(struct pcmcia_device *link) |
| { |
| local_info_t *info = link->priv; |
| |
| DEBUG(0, "teles_detach(0x%p)\n", link); |
| |
| info->busy = 1; |
| teles_cs_release(link); |
| |
| kfree(info); |
| } /* teles_detach */ |
| |
| /*====================================================================== |
| |
| teles_cs_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. |
| |
| ======================================================================*/ |
| |
| static int teles_cs_configcheck(struct pcmcia_device *p_dev, |
| cistpl_cftable_entry_t *cf, |
| cistpl_cftable_entry_t *dflt, |
| unsigned int vcc, |
| void *priv_data) |
| { |
| int j; |
| |
| if ((cf->io.nwin > 0) && cf->io.win[0].base) { |
| printk(KERN_INFO "(teles_cs: looks like the 96 model)\n"); |
| p_dev->io.BasePort1 = cf->io.win[0].base; |
| if (!pcmcia_request_io(p_dev, &p_dev->io)) |
| return 0; |
| } else { |
| printk(KERN_INFO "(teles_cs: looks like the 97 model)\n"); |
| for (j = 0x2f0; j > 0x100; j -= 0x10) { |
| p_dev->io.BasePort1 = j; |
| if (!pcmcia_request_io(p_dev, &p_dev->io)) |
| return 0; |
| } |
| } |
| return -ENODEV; |
| } |
| |
| static int teles_cs_config(struct pcmcia_device *link) |
| { |
| local_info_t *dev; |
| int i, last_fn; |
| IsdnCard_t icard; |
| |
| DEBUG(0, "teles_config(0x%p)\n", link); |
| dev = link->priv; |
| |
| i = pcmcia_loop_config(link, teles_cs_configcheck, NULL); |
| if (i != CS_SUCCESS) { |
| last_fn = RequestIO; |
| goto cs_failed; |
| } |
| |
| i = pcmcia_request_irq(link, &link->irq); |
| if (i != CS_SUCCESS) { |
| link->irq.AssignedIRQ = 0; |
| last_fn = RequestIRQ; |
| goto cs_failed; |
| } |
| |
| i = pcmcia_request_configuration(link, &link->conf); |
| if (i != CS_SUCCESS) { |
| last_fn = RequestConfiguration; |
| goto cs_failed; |
| } |
| |
| /* At this point, the dev_node_t structure(s) should be |
| initialized and arranged in a linked list at link->dev. *//* */ |
| sprintf(dev->node.dev_name, "teles"); |
| dev->node.major = dev->node.minor = 0x0; |
| |
| link->dev_node = &dev->node; |
| |
| /* Finally, report what we've done */ |
| printk(KERN_INFO "%s: index 0x%02x:", |
| dev->node.dev_name, link->conf.ConfigIndex); |
| if (link->conf.Attributes & CONF_ENABLE_IRQ) |
| printk(", irq %d", link->irq.AssignedIRQ); |
| if (link->io.NumPorts1) |
| printk(", io 0x%04x-0x%04x", link->io.BasePort1, |
| link->io.BasePort1+link->io.NumPorts1-1); |
| if (link->io.NumPorts2) |
| printk(" & 0x%04x-0x%04x", link->io.BasePort2, |
| link->io.BasePort2+link->io.NumPorts2-1); |
| printk("\n"); |
| |
| icard.para[0] = link->irq.AssignedIRQ; |
| icard.para[1] = link->io.BasePort1; |
| icard.protocol = protocol; |
| icard.typ = ISDN_CTYPE_TELESPCMCIA; |
| |
| i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard); |
| if (i < 0) { |
| printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n", |
| i, link->io.BasePort1); |
| teles_cs_release(link); |
| return -ENODEV; |
| } |
| |
| ((local_info_t*)link->priv)->cardnr = i; |
| return 0; |
| |
| cs_failed: |
| cs_error(link, last_fn, i); |
| teles_cs_release(link); |
| return -ENODEV; |
| } /* teles_cs_config */ |
| |
| /*====================================================================== |
| |
| After a card is removed, teles_cs_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 teles_cs_release(struct pcmcia_device *link) |
| { |
| local_info_t *local = link->priv; |
| |
| DEBUG(0, "teles_cs_release(0x%p)\n", link); |
| |
| if (local) { |
| if (local->cardnr >= 0) { |
| /* no unregister function with hisax */ |
| HiSax_closecard(local->cardnr); |
| } |
| } |
| |
| pcmcia_disable_device(link); |
| } /* teles_cs_release */ |
| |
| static int teles_suspend(struct pcmcia_device *link) |
| { |
| local_info_t *dev = link->priv; |
| |
| dev->busy = 1; |
| |
| return 0; |
| } |
| |
| static int teles_resume(struct pcmcia_device *link) |
| { |
| local_info_t *dev = link->priv; |
| |
| dev->busy = 0; |
| |
| return 0; |
| } |
| |
| |
| static struct pcmcia_device_id teles_ids[] = { |
| PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119), |
| PCMCIA_DEVICE_NULL, |
| }; |
| MODULE_DEVICE_TABLE(pcmcia, teles_ids); |
| |
| static struct pcmcia_driver teles_cs_driver = { |
| .owner = THIS_MODULE, |
| .drv = { |
| .name = "teles_cs", |
| }, |
| .probe = teles_probe, |
| .remove = teles_detach, |
| .id_table = teles_ids, |
| .suspend = teles_suspend, |
| .resume = teles_resume, |
| }; |
| |
| static int __init init_teles_cs(void) |
| { |
| return pcmcia_register_driver(&teles_cs_driver); |
| } |
| |
| static void __exit exit_teles_cs(void) |
| { |
| pcmcia_unregister_driver(&teles_cs_driver); |
| } |
| |
| module_init(init_teles_cs); |
| module_exit(exit_teles_cs); |