| /* |
| * ds.c -- 16-bit PCMCIA core support |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * The initial developer of the original code is David A. Hinds |
| * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
| * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
| * |
| * (C) 1999 David A. Hinds |
| * (C) 2003 - 2006 Dominik Brodowski |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/errno.h> |
| #include <linux/list.h> |
| #include <linux/delay.h> |
| #include <linux/workqueue.h> |
| #include <linux/crc32.h> |
| #include <linux/firmware.h> |
| #include <linux/kref.h> |
| #include <linux/dma-mapping.h> |
| |
| #include <pcmcia/cs_types.h> |
| #include <pcmcia/cs.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/ds.h> |
| #include <pcmcia/ss.h> |
| |
| #include "cs_internal.h" |
| |
| /*====================================================================*/ |
| |
| /* Module parameters */ |
| |
| MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| MODULE_DESCRIPTION("PCMCIA Driver Services"); |
| MODULE_LICENSE("GPL"); |
| |
| |
| spinlock_t pcmcia_dev_list_lock; |
| |
| /*====================================================================*/ |
| |
| static void pcmcia_check_driver(struct pcmcia_driver *p_drv) |
| { |
| struct pcmcia_device_id *did = p_drv->id_table; |
| unsigned int i; |
| u32 hash; |
| |
| if (!p_drv->probe || !p_drv->remove) |
| printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " |
| "function\n", p_drv->drv.name); |
| |
| while (did && did->match_flags) { |
| for (i = 0; i < 4; i++) { |
| if (!did->prod_id[i]) |
| continue; |
| |
| hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); |
| if (hash == did->prod_id_hash[i]) |
| continue; |
| |
| printk(KERN_DEBUG "pcmcia: %s: invalid hash for " |
| "product string \"%s\": is 0x%x, should " |
| "be 0x%x\n", p_drv->drv.name, did->prod_id[i], |
| did->prod_id_hash[i], hash); |
| printk(KERN_DEBUG "pcmcia: see " |
| "Documentation/pcmcia/devicetable.txt for " |
| "details\n"); |
| } |
| did++; |
| } |
| |
| return; |
| } |
| |
| |
| /*======================================================================*/ |
| |
| |
| struct pcmcia_dynid { |
| struct list_head node; |
| struct pcmcia_device_id id; |
| }; |
| |
| /** |
| * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices |
| * @driver: target device driver |
| * @buf: buffer for scanning device ID data |
| * @count: input size |
| * |
| * Adds a new dynamic PCMCIA device ID to this driver, |
| * and causes the driver to probe for all devices again. |
| */ |
| static ssize_t |
| pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) |
| { |
| struct pcmcia_dynid *dynid; |
| struct pcmcia_driver *pdrv = to_pcmcia_drv(driver); |
| __u16 match_flags, manf_id, card_id; |
| __u8 func_id, function, device_no; |
| __u32 prod_id_hash[4] = {0, 0, 0, 0}; |
| int fields = 0; |
| int retval = 0; |
| |
| fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x", |
| &match_flags, &manf_id, &card_id, &func_id, &function, &device_no, |
| &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]); |
| if (fields < 6) |
| return -EINVAL; |
| |
| dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL); |
| if (!dynid) |
| return -ENOMEM; |
| |
| dynid->id.match_flags = match_flags; |
| dynid->id.manf_id = manf_id; |
| dynid->id.card_id = card_id; |
| dynid->id.func_id = func_id; |
| dynid->id.function = function; |
| dynid->id.device_no = device_no; |
| memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); |
| |
| spin_lock(&pdrv->dynids.lock); |
| list_add_tail(&dynid->node, &pdrv->dynids.list); |
| spin_unlock(&pdrv->dynids.lock); |
| |
| if (get_driver(&pdrv->drv)) { |
| retval = driver_attach(&pdrv->drv); |
| put_driver(&pdrv->drv); |
| } |
| |
| if (retval) |
| return retval; |
| return count; |
| } |
| static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); |
| |
| static void |
| pcmcia_free_dynids(struct pcmcia_driver *drv) |
| { |
| struct pcmcia_dynid *dynid, *n; |
| |
| spin_lock(&drv->dynids.lock); |
| list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { |
| list_del(&dynid->node); |
| kfree(dynid); |
| } |
| spin_unlock(&drv->dynids.lock); |
| } |
| |
| static int |
| pcmcia_create_newid_file(struct pcmcia_driver *drv) |
| { |
| int error = 0; |
| if (drv->probe != NULL) |
| error = driver_create_file(&drv->drv, &driver_attr_new_id); |
| return error; |
| } |
| |
| |
| /** |
| * pcmcia_register_driver - register a PCMCIA driver with the bus core |
| * @driver: the &driver being registered |
| * |
| * Registers a PCMCIA driver with the PCMCIA bus core. |
| */ |
| int pcmcia_register_driver(struct pcmcia_driver *driver) |
| { |
| int error; |
| |
| if (!driver) |
| return -EINVAL; |
| |
| pcmcia_check_driver(driver); |
| |
| /* initialize common fields */ |
| driver->drv.bus = &pcmcia_bus_type; |
| driver->drv.owner = driver->owner; |
| spin_lock_init(&driver->dynids.lock); |
| INIT_LIST_HEAD(&driver->dynids.list); |
| |
| pr_debug("registering driver %s\n", driver->drv.name); |
| |
| error = driver_register(&driver->drv); |
| if (error < 0) |
| return error; |
| |
| error = pcmcia_create_newid_file(driver); |
| if (error) |
| driver_unregister(&driver->drv); |
| |
| return error; |
| } |
| EXPORT_SYMBOL(pcmcia_register_driver); |
| |
| /** |
| * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core |
| * @driver: the &driver being unregistered |
| */ |
| void pcmcia_unregister_driver(struct pcmcia_driver *driver) |
| { |
| pr_debug("unregistering driver %s\n", driver->drv.name); |
| driver_unregister(&driver->drv); |
| pcmcia_free_dynids(driver); |
| } |
| EXPORT_SYMBOL(pcmcia_unregister_driver); |
| |
| |
| /* pcmcia_device handling */ |
| |
| struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev) |
| { |
| struct device *tmp_dev; |
| tmp_dev = get_device(&p_dev->dev); |
| if (!tmp_dev) |
| return NULL; |
| return to_pcmcia_dev(tmp_dev); |
| } |
| |
| void pcmcia_put_dev(struct pcmcia_device *p_dev) |
| { |
| if (p_dev) |
| put_device(&p_dev->dev); |
| } |
| |
| static void pcmcia_release_function(struct kref *ref) |
| { |
| struct config_t *c = container_of(ref, struct config_t, ref); |
| pr_debug("releasing config_t\n"); |
| kfree(c); |
| } |
| |
| static void pcmcia_release_dev(struct device *dev) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| dev_dbg(dev, "releasing device\n"); |
| pcmcia_put_socket(p_dev->socket); |
| kfree(p_dev->devname); |
| kref_put(&p_dev->function_config->ref, pcmcia_release_function); |
| kfree(p_dev); |
| } |
| |
| static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc) |
| { |
| if (!s->pcmcia_state.device_add_pending) { |
| dev_dbg(&s->dev, "scheduling to add %s secondary" |
| " device to %d\n", mfc ? "mfc" : "pfc", s->sock); |
| s->pcmcia_state.device_add_pending = 1; |
| s->pcmcia_state.mfc_pfc = mfc; |
| schedule_work(&s->device_add); |
| } |
| return; |
| } |
| |
| static int pcmcia_device_probe(struct device *dev) |
| { |
| struct pcmcia_device *p_dev; |
| struct pcmcia_driver *p_drv; |
| struct pcmcia_device_id *did; |
| struct pcmcia_socket *s; |
| cistpl_config_t cis_config; |
| int ret = 0; |
| |
| dev = get_device(dev); |
| if (!dev) |
| return -ENODEV; |
| |
| p_dev = to_pcmcia_dev(dev); |
| p_drv = to_pcmcia_drv(dev->driver); |
| s = p_dev->socket; |
| |
| /* The PCMCIA code passes the match data in via dev_set_drvdata(dev) |
| * which is an ugly hack. Once the driver probe is called it may |
| * and often will overwrite the match data so we must save it first |
| * |
| * handle pseudo multifunction devices: |
| * there are at most two pseudo multifunction devices. |
| * if we're matching against the first, schedule a |
| * call which will then check whether there are two |
| * pseudo devices, and if not, add the second one. |
| */ |
| did = dev_get_drvdata(&p_dev->dev); |
| |
| dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name); |
| |
| if ((!p_drv->probe) || (!p_dev->function_config) || |
| (!try_module_get(p_drv->owner))) { |
| ret = -EINVAL; |
| goto put_dev; |
| } |
| |
| /* set up some more device information */ |
| ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, |
| &cis_config); |
| if (!ret) { |
| p_dev->conf.ConfigBase = cis_config.base; |
| p_dev->conf.Present = cis_config.rmask[0]; |
| } else { |
| dev_printk(KERN_INFO, dev, |
| "pcmcia: could not parse base and rmask0 of CIS\n"); |
| p_dev->conf.ConfigBase = 0; |
| p_dev->conf.Present = 0; |
| } |
| |
| ret = p_drv->probe(p_dev); |
| if (ret) { |
| dev_dbg(dev, "binding to %s failed with %d\n", |
| p_drv->drv.name, ret); |
| goto put_module; |
| } |
| |
| if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && |
| (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) |
| pcmcia_add_device_later(p_dev->socket, 0); |
| |
| put_module: |
| if (ret) |
| module_put(p_drv->owner); |
| put_dev: |
| if (ret) |
| put_device(dev); |
| return ret; |
| } |
| |
| |
| /* |
| * Removes a PCMCIA card from the device tree and socket list. |
| */ |
| static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) |
| { |
| struct pcmcia_device *p_dev; |
| struct pcmcia_device *tmp; |
| unsigned long flags; |
| |
| dev_dbg(leftover ? &leftover->dev : &s->dev, |
| "pcmcia_card_remove(%d) %s\n", s->sock, |
| leftover ? leftover->devname : ""); |
| |
| if (!leftover) |
| s->device_count = 0; |
| else |
| s->device_count = 1; |
| |
| /* unregister all pcmcia_devices registered with this socket, except leftover */ |
| list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { |
| if (p_dev == leftover) |
| continue; |
| |
| spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| list_del(&p_dev->socket_device_list); |
| p_dev->_removed = 1; |
| spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| |
| dev_dbg(&p_dev->dev, "unregistering device\n"); |
| device_unregister(&p_dev->dev); |
| } |
| |
| return; |
| } |
| |
| static int pcmcia_device_remove(struct device *dev) |
| { |
| struct pcmcia_device *p_dev; |
| struct pcmcia_driver *p_drv; |
| struct pcmcia_device_id *did; |
| int i; |
| |
| p_dev = to_pcmcia_dev(dev); |
| p_drv = to_pcmcia_drv(dev->driver); |
| |
| dev_dbg(dev, "removing device\n"); |
| |
| /* If we're removing the primary module driving a |
| * pseudo multi-function card, we need to unbind |
| * all devices |
| */ |
| did = dev_get_drvdata(&p_dev->dev); |
| if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && |
| (p_dev->socket->device_count != 0) && |
| (p_dev->device_no == 0)) |
| pcmcia_card_remove(p_dev->socket, p_dev); |
| |
| /* detach the "instance" */ |
| if (!p_drv) |
| return 0; |
| |
| if (p_drv->remove) |
| p_drv->remove(p_dev); |
| |
| p_dev->dev_node = NULL; |
| |
| /* check for proper unloading */ |
| if (p_dev->_irq || p_dev->_io || p_dev->_locked) |
| dev_printk(KERN_INFO, dev, |
| "pcmcia: driver %s did not release config properly\n", |
| p_drv->drv.name); |
| |
| for (i = 0; i < MAX_WIN; i++) |
| if (p_dev->_win & CLIENT_WIN_REQ(i)) |
| dev_printk(KERN_INFO, dev, |
| "pcmcia: driver %s did not release window properly\n", |
| p_drv->drv.name); |
| |
| /* references from pcmcia_probe_device */ |
| pcmcia_put_dev(p_dev); |
| module_put(p_drv->owner); |
| |
| return 0; |
| } |
| |
| |
| /* |
| * pcmcia_device_query -- determine information about a pcmcia device |
| */ |
| static int pcmcia_device_query(struct pcmcia_device *p_dev) |
| { |
| cistpl_manfid_t manf_id; |
| cistpl_funcid_t func_id; |
| cistpl_vers_1_t *vers1; |
| unsigned int i; |
| |
| vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); |
| if (!vers1) |
| return -ENOMEM; |
| |
| if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, |
| CISTPL_MANFID, &manf_id)) { |
| p_dev->manf_id = manf_id.manf; |
| p_dev->card_id = manf_id.card; |
| p_dev->has_manf_id = 1; |
| p_dev->has_card_id = 1; |
| } |
| |
| if (!pccard_read_tuple(p_dev->socket, p_dev->func, |
| CISTPL_FUNCID, &func_id)) { |
| p_dev->func_id = func_id.func; |
| p_dev->has_func_id = 1; |
| } else { |
| /* rule of thumb: cards with no FUNCID, but with |
| * common memory device geometry information, are |
| * probably memory cards (from pcmcia-cs) */ |
| cistpl_device_geo_t *devgeo; |
| |
| devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); |
| if (!devgeo) { |
| kfree(vers1); |
| return -ENOMEM; |
| } |
| if (!pccard_read_tuple(p_dev->socket, p_dev->func, |
| CISTPL_DEVICE_GEO, devgeo)) { |
| dev_dbg(&p_dev->dev, |
| "mem device geometry probably means " |
| "FUNCID_MEMORY\n"); |
| p_dev->func_id = CISTPL_FUNCID_MEMORY; |
| p_dev->has_func_id = 1; |
| } |
| kfree(devgeo); |
| } |
| |
| if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, |
| vers1)) { |
| for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { |
| char *tmp; |
| unsigned int length; |
| |
| tmp = vers1->str + vers1->ofs[i]; |
| |
| length = strlen(tmp) + 1; |
| if ((length < 2) || (length > 255)) |
| continue; |
| |
| p_dev->prod_id[i] = kmalloc(sizeof(char) * length, |
| GFP_KERNEL); |
| if (!p_dev->prod_id[i]) |
| continue; |
| |
| p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], |
| tmp, length); |
| } |
| } |
| |
| kfree(vers1); |
| return 0; |
| } |
| |
| |
| /* device_add_lock is needed to avoid double registration by cardmgr and kernel. |
| * Serializes pcmcia_device_add; will most likely be removed in future. |
| * |
| * While it has the caveat that adding new PCMCIA devices inside(!) device_register() |
| * won't work, this doesn't matter much at the moment: the driver core doesn't |
| * support it either. |
| */ |
| static DEFINE_MUTEX(device_add_lock); |
| |
| struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) |
| { |
| struct pcmcia_device *p_dev, *tmp_dev; |
| unsigned long flags; |
| |
| s = pcmcia_get_socket(s); |
| if (!s) |
| return NULL; |
| |
| mutex_lock(&device_add_lock); |
| |
| pr_debug("adding device to %d, function %d\n", s->sock, function); |
| |
| /* max of 4 devices per card */ |
| if (s->device_count == 4) |
| goto err_put; |
| |
| p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); |
| if (!p_dev) |
| goto err_put; |
| |
| p_dev->socket = s; |
| p_dev->device_no = (s->device_count++); |
| p_dev->func = function; |
| |
| p_dev->dev.bus = &pcmcia_bus_type; |
| p_dev->dev.parent = s->dev.parent; |
| p_dev->dev.release = pcmcia_release_dev; |
| /* by default don't allow DMA */ |
| p_dev->dma_mask = DMA_MASK_NONE; |
| p_dev->dev.dma_mask = &p_dev->dma_mask; |
| dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); |
| if (!dev_name(&p_dev->dev)) |
| goto err_free; |
| p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); |
| if (!p_dev->devname) |
| goto err_free; |
| dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname); |
| |
| spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| |
| /* |
| * p_dev->function_config must be the same for all card functions. |
| * Note that this is serialized by the device_add_lock, so that |
| * only one such struct will be created. |
| */ |
| list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) |
| if (p_dev->func == tmp_dev->func) { |
| p_dev->function_config = tmp_dev->function_config; |
| p_dev->io = tmp_dev->io; |
| p_dev->irq = tmp_dev->irq; |
| kref_get(&p_dev->function_config->ref); |
| } |
| |
| /* Add to the list in pcmcia_bus_socket */ |
| list_add(&p_dev->socket_device_list, &s->devices_list); |
| |
| spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| |
| if (!p_dev->function_config) { |
| dev_dbg(&p_dev->dev, "creating config_t\n"); |
| p_dev->function_config = kzalloc(sizeof(struct config_t), |
| GFP_KERNEL); |
| if (!p_dev->function_config) |
| goto err_unreg; |
| kref_init(&p_dev->function_config->ref); |
| } |
| |
| dev_printk(KERN_NOTICE, &p_dev->dev, |
| "pcmcia: registering new device %s\n", |
| p_dev->devname); |
| |
| pcmcia_device_query(p_dev); |
| |
| if (device_register(&p_dev->dev)) |
| goto err_unreg; |
| |
| mutex_unlock(&device_add_lock); |
| |
| return p_dev; |
| |
| err_unreg: |
| spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| list_del(&p_dev->socket_device_list); |
| spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| |
| err_free: |
| kfree(p_dev->devname); |
| kfree(p_dev); |
| s->device_count--; |
| err_put: |
| mutex_unlock(&device_add_lock); |
| pcmcia_put_socket(s); |
| |
| return NULL; |
| } |
| |
| |
| static int pcmcia_card_add(struct pcmcia_socket *s) |
| { |
| cistpl_longlink_mfc_t mfc; |
| unsigned int no_funcs, i, no_chains; |
| int ret = 0; |
| |
| if (!(s->resource_setup_done)) { |
| dev_dbg(&s->dev, |
| "no resources available, delaying card_add\n"); |
| return -EAGAIN; /* try again, but later... */ |
| } |
| |
| if (pcmcia_validate_mem(s)) { |
| dev_dbg(&s->dev, "validating mem resources failed, " |
| "delaying card_add\n"); |
| return -EAGAIN; /* try again, but later... */ |
| } |
| |
| ret = pccard_validate_cis(s, &no_chains); |
| if (ret || !no_chains) { |
| dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); |
| return -ENODEV; |
| } |
| |
| if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) |
| no_funcs = mfc.nfn; |
| else |
| no_funcs = 1; |
| s->functions = no_funcs; |
| |
| for (i = 0; i < no_funcs; i++) |
| pcmcia_device_add(s, i); |
| |
| return ret; |
| } |
| |
| |
| static void pcmcia_delayed_add_device(struct work_struct *work) |
| { |
| struct pcmcia_socket *s = |
| container_of(work, struct pcmcia_socket, device_add); |
| dev_dbg(&s->dev, "adding additional device to %d\n", s->sock); |
| pcmcia_device_add(s, s->pcmcia_state.mfc_pfc); |
| s->pcmcia_state.device_add_pending = 0; |
| s->pcmcia_state.mfc_pfc = 0; |
| } |
| |
| static int pcmcia_requery(struct device *dev, void * _data) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| if (!p_dev->dev.driver) { |
| dev_dbg(dev, "update device information\n"); |
| pcmcia_device_query(p_dev); |
| } |
| |
| return 0; |
| } |
| |
| static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis) |
| { |
| int no_devices = 0; |
| int ret = 0; |
| unsigned long flags; |
| |
| /* must be called with skt_mutex held */ |
| dev_dbg(&skt->dev, "re-scanning socket %d\n", skt->sock); |
| |
| spin_lock_irqsave(&pcmcia_dev_list_lock, flags); |
| if (list_empty(&skt->devices_list)) |
| no_devices = 1; |
| spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); |
| |
| /* If this is because of a CIS override, start over */ |
| if (new_cis && !no_devices) |
| pcmcia_card_remove(skt, NULL); |
| |
| /* if no devices were added for this socket yet because of |
| * missing resource information or other trouble, we need to |
| * do this now. */ |
| if (no_devices || new_cis) { |
| ret = pcmcia_card_add(skt); |
| if (ret) |
| return; |
| } |
| |
| /* some device information might have changed because of a CIS |
| * update or because we can finally read it correctly... so |
| * determine it again, overwriting old values if necessary. */ |
| bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); |
| |
| /* we re-scan all devices, not just the ones connected to this |
| * socket. This does not matter, though. */ |
| ret = bus_rescan_devices(&pcmcia_bus_type); |
| if (ret) |
| printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n"); |
| } |
| |
| #ifdef CONFIG_PCMCIA_LOAD_CIS |
| |
| /** |
| * pcmcia_load_firmware - load CIS from userspace if device-provided is broken |
| * @dev: the pcmcia device which needs a CIS override |
| * @filename: requested filename in /lib/firmware/ |
| * |
| * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if |
| * the one provided by the card is broken. The firmware files reside in |
| * /lib/firmware/ in userspace. |
| */ |
| static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) |
| { |
| struct pcmcia_socket *s = dev->socket; |
| const struct firmware *fw; |
| int ret = -ENOMEM; |
| int no_funcs; |
| int old_funcs; |
| cistpl_longlink_mfc_t mfc; |
| |
| if (!filename) |
| return -EINVAL; |
| |
| dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename); |
| |
| if (request_firmware(&fw, filename, &dev->dev) == 0) { |
| if (fw->size >= CISTPL_MAX_CIS_SIZE) { |
| ret = -EINVAL; |
| dev_printk(KERN_ERR, &dev->dev, |
| "pcmcia: CIS override is too big\n"); |
| goto release; |
| } |
| |
| if (!pcmcia_replace_cis(s, fw->data, fw->size)) |
| ret = 0; |
| else { |
| dev_printk(KERN_ERR, &dev->dev, |
| "pcmcia: CIS override failed\n"); |
| goto release; |
| } |
| |
| |
| /* update information */ |
| pcmcia_device_query(dev); |
| |
| /* does this cis override add or remove functions? */ |
| old_funcs = s->functions; |
| |
| if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) |
| no_funcs = mfc.nfn; |
| else |
| no_funcs = 1; |
| s->functions = no_funcs; |
| |
| if (old_funcs > no_funcs) |
| pcmcia_card_remove(s, dev); |
| else if (no_funcs > old_funcs) |
| pcmcia_add_device_later(s, 1); |
| } |
| release: |
| release_firmware(fw); |
| |
| return ret; |
| } |
| |
| #else /* !CONFIG_PCMCIA_LOAD_CIS */ |
| |
| static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) |
| { |
| return -ENODEV; |
| } |
| |
| #endif |
| |
| |
| static inline int pcmcia_devmatch(struct pcmcia_device *dev, |
| struct pcmcia_device_id *did) |
| { |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { |
| if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { |
| if ((!dev->has_card_id) || (dev->card_id != did->card_id)) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { |
| if (dev->func != did->function) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { |
| if (!dev->prod_id[0]) |
| return 0; |
| if (strcmp(did->prod_id[0], dev->prod_id[0])) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { |
| if (!dev->prod_id[1]) |
| return 0; |
| if (strcmp(did->prod_id[1], dev->prod_id[1])) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { |
| if (!dev->prod_id[2]) |
| return 0; |
| if (strcmp(did->prod_id[2], dev->prod_id[2])) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { |
| if (!dev->prod_id[3]) |
| return 0; |
| if (strcmp(did->prod_id[3], dev->prod_id[3])) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { |
| if (dev->device_no != did->device_no) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { |
| if ((!dev->has_func_id) || (dev->func_id != did->func_id)) |
| return 0; |
| |
| /* if this is a pseudo-multi-function device, |
| * we need explicit matches */ |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) |
| return 0; |
| if (dev->device_no) |
| return 0; |
| |
| /* also, FUNC_ID matching needs to be activated by userspace |
| * after it has re-checked that there is no possible module |
| * with a prod_id/manf_id/card_id match. |
| */ |
| dev_dbg(&dev->dev, |
| "skipping FUNC_ID match until userspace interaction\n"); |
| if (!dev->allow_func_id_match) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { |
| dev_dbg(&dev->dev, "device needs a fake CIS\n"); |
| if (!dev->socket->fake_cis) |
| pcmcia_load_firmware(dev, did->cisfile); |
| |
| if (!dev->socket->fake_cis) |
| return 0; |
| } |
| |
| if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { |
| int i; |
| for (i = 0; i < 4; i++) |
| if (dev->prod_id[i]) |
| return 0; |
| if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) |
| return 0; |
| } |
| |
| dev_set_drvdata(&dev->dev, did); |
| |
| return 1; |
| } |
| |
| |
| static int pcmcia_bus_match(struct device *dev, struct device_driver *drv) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| struct pcmcia_driver *p_drv = to_pcmcia_drv(drv); |
| struct pcmcia_device_id *did = p_drv->id_table; |
| struct pcmcia_dynid *dynid; |
| |
| /* match dynamic devices first */ |
| spin_lock(&p_drv->dynids.lock); |
| list_for_each_entry(dynid, &p_drv->dynids.list, node) { |
| dev_dbg(dev, "trying to match to %s\n", drv->name); |
| if (pcmcia_devmatch(p_dev, &dynid->id)) { |
| dev_dbg(dev, "matched to %s\n", drv->name); |
| spin_unlock(&p_drv->dynids.lock); |
| return 1; |
| } |
| } |
| spin_unlock(&p_drv->dynids.lock); |
| |
| #ifdef CONFIG_PCMCIA_IOCTL |
| /* matching by cardmgr */ |
| if (p_dev->cardmgr == p_drv) { |
| dev_dbg(dev, "cardmgr matched to %s\n", drv->name); |
| return 1; |
| } |
| #endif |
| |
| while (did && did->match_flags) { |
| dev_dbg(dev, "trying to match to %s\n", drv->name); |
| if (pcmcia_devmatch(p_dev, did)) { |
| dev_dbg(dev, "matched to %s\n", drv->name); |
| return 1; |
| } |
| did++; |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_HOTPLUG |
| |
| static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
| { |
| struct pcmcia_device *p_dev; |
| int i; |
| u32 hash[4] = { 0, 0, 0, 0}; |
| |
| if (!dev) |
| return -ENODEV; |
| |
| p_dev = to_pcmcia_dev(dev); |
| |
| /* calculate hashes */ |
| for (i = 0; i < 4; i++) { |
| if (!p_dev->prod_id[i]) |
| continue; |
| hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); |
| } |
| |
| if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) |
| return -ENOMEM; |
| |
| if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) |
| return -ENOMEM; |
| |
| if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" |
| "pa%08Xpb%08Xpc%08Xpd%08X", |
| p_dev->has_manf_id ? p_dev->manf_id : 0, |
| p_dev->has_card_id ? p_dev->card_id : 0, |
| p_dev->has_func_id ? p_dev->func_id : 0, |
| p_dev->func, |
| p_dev->device_no, |
| hash[0], |
| hash[1], |
| hash[2], |
| hash[3])) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| #else |
| |
| static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) |
| { |
| return -ENODEV; |
| } |
| |
| #endif |
| |
| /************************ runtime PM support ***************************/ |
| |
| static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); |
| static int pcmcia_dev_resume(struct device *dev); |
| |
| static int runtime_suspend(struct device *dev) |
| { |
| int rc; |
| |
| down(&dev->sem); |
| rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); |
| up(&dev->sem); |
| return rc; |
| } |
| |
| static int runtime_resume(struct device *dev) |
| { |
| int rc; |
| |
| down(&dev->sem); |
| rc = pcmcia_dev_resume(dev); |
| up(&dev->sem); |
| return rc; |
| } |
| |
| /************************ per-device sysfs output ***************************/ |
| |
| #define pcmcia_device_attr(field, test, format) \ |
| static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ |
| return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \ |
| } |
| |
| #define pcmcia_device_stringattr(name, field) \ |
| static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ |
| { \ |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ |
| return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \ |
| } |
| |
| pcmcia_device_attr(func, socket, "0x%02x\n"); |
| pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); |
| pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); |
| pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); |
| pcmcia_device_stringattr(prod_id1, prod_id[0]); |
| pcmcia_device_stringattr(prod_id2, prod_id[1]); |
| pcmcia_device_stringattr(prod_id3, prod_id[2]); |
| pcmcia_device_stringattr(prod_id4, prod_id[3]); |
| |
| |
| static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| |
| if (p_dev->suspended) |
| return sprintf(buf, "off\n"); |
| else |
| return sprintf(buf, "on\n"); |
| } |
| |
| static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| int ret = 0; |
| |
| if (!count) |
| return -EINVAL; |
| |
| if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) |
| ret = runtime_suspend(dev); |
| else if (p_dev->suspended && !strncmp(buf, "on", 2)) |
| ret = runtime_resume(dev); |
| |
| return ret ? ret : count; |
| } |
| |
| |
| static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| int i; |
| u32 hash[4] = { 0, 0, 0, 0}; |
| |
| /* calculate hashes */ |
| for (i = 0; i < 4; i++) { |
| if (!p_dev->prod_id[i]) |
| continue; |
| hash[i] = crc32(0, p_dev->prod_id[i], |
| strlen(p_dev->prod_id[i])); |
| } |
| return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" |
| "pa%08Xpb%08Xpc%08Xpd%08X\n", |
| p_dev->has_manf_id ? p_dev->manf_id : 0, |
| p_dev->has_card_id ? p_dev->card_id : 0, |
| p_dev->has_func_id ? p_dev->func_id : 0, |
| p_dev->func, p_dev->device_no, |
| hash[0], hash[1], hash[2], hash[3]); |
| } |
| |
| static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| int ret; |
| |
| if (!count) |
| return -EINVAL; |
| |
| mutex_lock(&p_dev->socket->skt_mutex); |
| p_dev->allow_func_id_match = 1; |
| mutex_unlock(&p_dev->socket->skt_mutex); |
| |
| ret = bus_rescan_devices(&pcmcia_bus_type); |
| if (ret) |
| printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " |
| "allowing func_id matches\n"); |
| |
| return count; |
| } |
| |
| static struct device_attribute pcmcia_dev_attrs[] = { |
| __ATTR(function, 0444, func_show, NULL), |
| __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), |
| __ATTR_RO(func_id), |
| __ATTR_RO(manf_id), |
| __ATTR_RO(card_id), |
| __ATTR_RO(prod_id1), |
| __ATTR_RO(prod_id2), |
| __ATTR_RO(prod_id3), |
| __ATTR_RO(prod_id4), |
| __ATTR_RO(modalias), |
| __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), |
| __ATTR_NULL, |
| }; |
| |
| /* PM support, also needed for reset */ |
| |
| static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| struct pcmcia_driver *p_drv = NULL; |
| int ret = 0; |
| |
| if (p_dev->suspended) |
| return 0; |
| |
| dev_dbg(dev, "suspending\n"); |
| |
| if (dev->driver) |
| p_drv = to_pcmcia_drv(dev->driver); |
| |
| if (!p_drv) |
| goto out; |
| |
| if (p_drv->suspend) { |
| ret = p_drv->suspend(p_dev); |
| if (ret) { |
| dev_printk(KERN_ERR, dev, |
| "pcmcia: device %s (driver %s) did " |
| "not want to go to sleep (%d)\n", |
| p_dev->devname, p_drv->drv.name, ret); |
| goto out; |
| } |
| } |
| |
| if (p_dev->device_no == p_dev->func) { |
| dev_dbg(dev, "releasing configuration\n"); |
| pcmcia_release_configuration(p_dev); |
| } |
| |
| out: |
| if (!ret) |
| p_dev->suspended = 1; |
| return ret; |
| } |
| |
| |
| static int pcmcia_dev_resume(struct device *dev) |
| { |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| struct pcmcia_driver *p_drv = NULL; |
| int ret = 0; |
| |
| if (!p_dev->suspended) |
| return 0; |
| |
| dev_dbg(dev, "resuming\n"); |
| |
| if (dev->driver) |
| p_drv = to_pcmcia_drv(dev->driver); |
| |
| if (!p_drv) |
| goto out; |
| |
| if (p_dev->device_no == p_dev->func) { |
| dev_dbg(dev, "requesting configuration\n"); |
| ret = pcmcia_request_configuration(p_dev, &p_dev->conf); |
| if (ret) |
| goto out; |
| } |
| |
| if (p_drv->resume) |
| ret = p_drv->resume(p_dev); |
| |
| out: |
| if (!ret) |
| p_dev->suspended = 0; |
| return ret; |
| } |
| |
| |
| static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) |
| { |
| struct pcmcia_socket *skt = _data; |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| |
| if (p_dev->socket != skt || p_dev->suspended) |
| return 0; |
| |
| return runtime_suspend(dev); |
| } |
| |
| static int pcmcia_bus_resume_callback(struct device *dev, void * _data) |
| { |
| struct pcmcia_socket *skt = _data; |
| struct pcmcia_device *p_dev = to_pcmcia_dev(dev); |
| |
| if (p_dev->socket != skt || !p_dev->suspended) |
| return 0; |
| |
| runtime_resume(dev); |
| |
| return 0; |
| } |
| |
| static int pcmcia_bus_resume(struct pcmcia_socket *skt) |
| { |
| dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock); |
| bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); |
| return 0; |
| } |
| |
| static int pcmcia_bus_suspend(struct pcmcia_socket *skt) |
| { |
| dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock); |
| if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, |
| pcmcia_bus_suspend_callback)) { |
| pcmcia_bus_resume(skt); |
| return -EIO; |
| } |
| return 0; |
| } |
| |
| |
| /*====================================================================== |
| |
| The card status event handler. |
| |
| ======================================================================*/ |
| |
| /* Normally, the event is passed to individual drivers after |
| * informing userspace. Only for CS_EVENT_CARD_REMOVAL this |
| * is inversed to maintain historic compatibility. |
| */ |
| |
| static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) |
| { |
| struct pcmcia_socket *s = pcmcia_get_socket(skt); |
| |
| if (!s) { |
| dev_printk(KERN_ERR, &skt->dev, |
| "PCMCIA obtaining reference to socket " \ |
| "failed, event 0x%x lost!\n", event); |
| return -ENODEV; |
| } |
| |
| dev_dbg(&skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", |
| event, priority, skt); |
| |
| switch (event) { |
| case CS_EVENT_CARD_REMOVAL: |
| s->pcmcia_state.present = 0; |
| pcmcia_card_remove(skt, NULL); |
| handle_event(skt, event); |
| destroy_cis_cache(s); |
| break; |
| |
| case CS_EVENT_CARD_INSERTION: |
| s->pcmcia_state.present = 1; |
| destroy_cis_cache(s); /* to be on the safe side... */ |
| pcmcia_card_add(skt); |
| handle_event(skt, event); |
| break; |
| |
| case CS_EVENT_EJECTION_REQUEST: |
| break; |
| |
| case CS_EVENT_PM_RESUME: |
| if (verify_cis_cache(skt) != 0) { |
| dev_dbg(&skt->dev, "cis mismatch - different card\n"); |
| /* first, remove the card */ |
| ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); |
| destroy_cis_cache(skt); |
| kfree(skt->fake_cis); |
| skt->fake_cis = NULL; |
| /* now, add the new card */ |
| ds_event(skt, CS_EVENT_CARD_INSERTION, |
| CS_EVENT_PRI_LOW); |
| } |
| handle_event(skt, event); |
| break; |
| |
| case CS_EVENT_PM_SUSPEND: |
| case CS_EVENT_RESET_PHYSICAL: |
| case CS_EVENT_CARD_RESET: |
| default: |
| handle_event(skt, event); |
| break; |
| } |
| |
| pcmcia_put_socket(s); |
| |
| return 0; |
| } /* ds_event */ |
| |
| |
| struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) |
| { |
| struct pcmcia_device *p_dev; |
| struct pcmcia_device *ret = NULL; |
| |
| p_dev = pcmcia_get_dev(_p_dev); |
| if (!p_dev) |
| return NULL; |
| |
| if (!p_dev->socket->pcmcia_state.present) |
| goto out; |
| |
| if (p_dev->_removed) |
| goto out; |
| |
| if (p_dev->suspended) |
| goto out; |
| |
| ret = p_dev; |
| out: |
| pcmcia_put_dev(p_dev); |
| return ret; |
| } |
| EXPORT_SYMBOL(pcmcia_dev_present); |
| |
| |
| static struct pcmcia_callback pcmcia_bus_callback = { |
| .owner = THIS_MODULE, |
| .event = ds_event, |
| .requery = pcmcia_bus_rescan, |
| .suspend = pcmcia_bus_suspend, |
| .resume = pcmcia_bus_resume, |
| }; |
| |
| static int __devinit pcmcia_bus_add_socket(struct device *dev, |
| struct class_interface *class_intf) |
| { |
| struct pcmcia_socket *socket = dev_get_drvdata(dev); |
| int ret; |
| |
| socket = pcmcia_get_socket(socket); |
| if (!socket) { |
| dev_printk(KERN_ERR, dev, |
| "PCMCIA obtaining reference to socket failed\n"); |
| return -ENODEV; |
| } |
| |
| /* |
| * Ugly. But we want to wait for the socket threads to have started up. |
| * We really should let the drivers themselves drive some of this.. |
| */ |
| msleep(250); |
| |
| #ifdef CONFIG_PCMCIA_IOCTL |
| init_waitqueue_head(&socket->queue); |
| #endif |
| INIT_LIST_HEAD(&socket->devices_list); |
| INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); |
| memset(&socket->pcmcia_state, 0, sizeof(u8)); |
| socket->device_count = 0; |
| |
| ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); |
| if (ret) { |
| dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); |
| pcmcia_put_socket(socket); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static void pcmcia_bus_remove_socket(struct device *dev, |
| struct class_interface *class_intf) |
| { |
| struct pcmcia_socket *socket = dev_get_drvdata(dev); |
| |
| if (!socket) |
| return; |
| |
| socket->pcmcia_state.dead = 1; |
| pccard_register_pcmcia(socket, NULL); |
| |
| /* unregister any unbound devices */ |
| mutex_lock(&socket->skt_mutex); |
| pcmcia_card_remove(socket, NULL); |
| release_cis_mem(socket); |
| mutex_unlock(&socket->skt_mutex); |
| |
| pcmcia_put_socket(socket); |
| |
| return; |
| } |
| |
| |
| /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ |
| static struct class_interface pcmcia_bus_interface __refdata = { |
| .class = &pcmcia_socket_class, |
| .add_dev = &pcmcia_bus_add_socket, |
| .remove_dev = &pcmcia_bus_remove_socket, |
| }; |
| |
| |
| struct bus_type pcmcia_bus_type = { |
| .name = "pcmcia", |
| .uevent = pcmcia_bus_uevent, |
| .match = pcmcia_bus_match, |
| .dev_attrs = pcmcia_dev_attrs, |
| .probe = pcmcia_device_probe, |
| .remove = pcmcia_device_remove, |
| .suspend = pcmcia_dev_suspend, |
| .resume = pcmcia_dev_resume, |
| }; |
| |
| |
| static int __init init_pcmcia_bus(void) |
| { |
| int ret; |
| |
| spin_lock_init(&pcmcia_dev_list_lock); |
| |
| ret = bus_register(&pcmcia_bus_type); |
| if (ret < 0) { |
| printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); |
| return ret; |
| } |
| ret = class_interface_register(&pcmcia_bus_interface); |
| if (ret < 0) { |
| printk(KERN_WARNING |
| "pcmcia: class_interface_register error: %d\n", ret); |
| bus_unregister(&pcmcia_bus_type); |
| return ret; |
| } |
| |
| pcmcia_setup_ioctl(); |
| |
| return 0; |
| } |
| fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that |
| * pcmcia_socket_class is already registered */ |
| |
| |
| static void __exit exit_pcmcia_bus(void) |
| { |
| pcmcia_cleanup_ioctl(); |
| |
| class_interface_unregister(&pcmcia_bus_interface); |
| |
| bus_unregister(&pcmcia_bus_type); |
| } |
| module_exit(exit_pcmcia_bus); |
| |
| |
| MODULE_ALIAS("ds"); |