X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpcmcia%2Fds.c;fp=drivers%2Fpcmcia%2Fds.c;h=74b3124e8247e444fd2911eecfe0de1ca5597063;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=c4ade288c5da6dcdcb497882f1dd1f8b659c29f4;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index c4ade288c..74b3124e8 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -10,44 +10,29 @@ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. * * (C) 1999 David A. Hinds - * (C) 2003 - 2004 Dominik Brodowski + * (C) 2003 - 2006 Dominik Brodowski */ -#include +#include #include -#include #include -#include -#include -#include #include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include #include #include -#include #include - -#include +#include +#include +#include #define IN_CARD_SERVICES -#include #include #include -#include #include #include #include #include "cs_internal.h" +#include "ds_internal.h" /*====================================================================*/ @@ -70,49 +55,7 @@ module_param_named(pc_debug, ds_pc_debug, int, 0644); #define ds_dbg(lvl, fmt, arg...) do { } while (0) #endif -/*====================================================================*/ - -/* Device user information */ -#define MAX_EVENTS 32 -#define USER_MAGIC 0x7ea4 -#define CHECK_USER(u) \ - (((u) == NULL) || ((u)->user_magic != USER_MAGIC)) -typedef struct user_info_t { - u_int user_magic; - int event_head, event_tail; - event_t event[MAX_EVENTS]; - struct user_info_t *next; - struct pcmcia_bus_socket *socket; -} user_info_t; - -/* Socket state information */ -struct pcmcia_bus_socket { - struct kref refcount; - struct pcmcia_callback callback; - int state; - user_info_t *user; - wait_queue_head_t queue; - struct pcmcia_socket *parent; - - /* the PCMCIA devices connected to this socket (normally one, more - * for multifunction devices: */ - struct list_head devices_list; - u8 device_count; /* the number of devices, used - * only internally and subject - * to incorrectness and change */ -}; -static spinlock_t pcmcia_dev_list_lock; - -#define DS_SOCKET_PRESENT 0x01 -#define DS_SOCKET_BUSY 0x02 -#define DS_SOCKET_REMOVAL_PENDING 0x10 -#define DS_SOCKET_DEAD 0x80 - -/*====================================================================*/ - -static int major_dev = -1; - -static int unbind_request(struct pcmcia_bus_socket *s); +spinlock_t pcmcia_dev_list_lock; /*====================================================================*/ @@ -213,17 +156,15 @@ static const lookup_t service_table[] = { }; -int pcmcia_report_error(client_handle_t handle, error_info_t *err) +static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err) { int i; char *serv; - if (CHECK_HANDLE(handle)) + if (!p_dev) printk(KERN_NOTICE); - else { - struct pcmcia_device *p_dev = handle_to_pdev(handle); + else printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id); - } for (i = 0; i < ARRAY_SIZE(service_table); i++) if (service_table[i].key == err->func) @@ -243,60 +184,130 @@ int pcmcia_report_error(client_handle_t handle, error_info_t *err) return CS_SUCCESS; } /* report_error */ -EXPORT_SYMBOL(pcmcia_report_error); /* end of code which was in cs.c before */ /*======================================================================*/ -void cs_error(client_handle_t handle, int func, int ret) +void cs_error(struct pcmcia_device *p_dev, int func, int ret) { error_info_t err = { func, ret }; - pcmcia_report_error(handle, &err); + pcmcia_report_error(p_dev, &err); } EXPORT_SYMBOL(cs_error); -/*======================================================================*/ - -static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info); -static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr); -static void pcmcia_release_bus_socket(struct kref *refcount) +static void pcmcia_check_driver(struct pcmcia_driver *p_drv) { - struct pcmcia_bus_socket *s = container_of(refcount, struct pcmcia_bus_socket, refcount); - pcmcia_put_socket(s->parent); - kfree(s); + 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; } -static void pcmcia_put_bus_socket(struct pcmcia_bus_socket *s) + +#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) { - kref_put(&s->refcount, pcmcia_release_bus_socket); + struct pcmcia_socket *s = dev->socket; + const struct firmware *fw; + char path[20]; + int ret=-ENOMEM; + cisdump_t *cis; + + if (!filename) + return -EINVAL; + + ds_dbg(1, "trying to load firmware %s\n", filename); + + if (strlen(filename) > 14) + return -EINVAL; + + snprintf(path, 20, "%s", filename); + + if (request_firmware(&fw, path, &dev->dev) == 0) { + if (fw->size >= CISTPL_MAX_CIS_SIZE) + goto release; + + cis = kzalloc(sizeof(cisdump_t), GFP_KERNEL); + if (!cis) + goto release; + + cis->Length = fw->size + 1; + memcpy(cis->Data, fw->data, fw->size); + + if (!pcmcia_replace_cis(s, cis)) + ret = 0; + } + release: + release_firmware(fw); + + return (ret); } -static struct pcmcia_bus_socket *pcmcia_get_bus_socket(struct pcmcia_bus_socket *s) +#else /* !CONFIG_PCMCIA_LOAD_CIS */ + +static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) { - kref_get(&s->refcount); - return (s); + return -ENODEV; } +#endif + + +/*======================================================================*/ + + /** * pcmcia_register_driver - register a PCMCIA driver with the bus core * * Registers a PCMCIA driver with the PCMCIA bus core. */ -static int pcmcia_device_probe(struct device *dev); -static int pcmcia_device_remove(struct device * dev); - int pcmcia_register_driver(struct pcmcia_driver *driver) { if (!driver) return -EINVAL; + pcmcia_check_driver(driver); + /* initialize common fields */ driver->drv.bus = &pcmcia_bus_type; driver->drv.owner = driver->owner; - driver->drv.probe = pcmcia_device_probe; - driver->drv.remove = pcmcia_device_remove; return driver_register(&driver->drv); } @@ -311,42 +322,10 @@ void pcmcia_unregister_driver(struct pcmcia_driver *driver) } EXPORT_SYMBOL(pcmcia_unregister_driver); -#ifdef CONFIG_PROC_FS -static struct proc_dir_entry *proc_pccard = NULL; - -static int proc_read_drivers_callback(struct device_driver *driver, void *d) -{ - char **p = d; - struct pcmcia_driver *p_drv = container_of(driver, - struct pcmcia_driver, drv); - - *p += sprintf(*p, "%-24.24s 1 %d\n", p_drv->drv.name, -#ifdef CONFIG_MODULE_UNLOAD - (p_drv->owner) ? module_refcount(p_drv->owner) : 1 -#else - 1 -#endif - ); - d = (void *) p; - - return 0; -} - -static int proc_read_drivers(char *buf, char **start, off_t pos, - int count, int *eof, void *data) -{ - char *p = buf; - - bus_for_each_drv(&pcmcia_bus_type, NULL, - (void *) &p, proc_read_drivers_callback); - - return (p - buf); -} -#endif /* pcmcia_device handling */ -static struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) +struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) { struct device *tmp_dev; tmp_dev = get_device(&p_dev->dev); @@ -355,25 +334,43 @@ static struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) return to_pcmcia_dev(tmp_dev); } -static void pcmcia_put_dev(struct pcmcia_device *p_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); + kfree(c); +} + static void pcmcia_release_dev(struct device *dev) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); ds_dbg(1, "releasing dev %p\n", p_dev); - pcmcia_put_bus_socket(p_dev->socket->pcmcia); + 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_pseudo_device(struct pcmcia_socket *s) +{ + if (!s->pcmcia_state.device_add_pending) { + s->pcmcia_state.device_add_pending = 1; + 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; int ret = 0; dev = get_device(dev); @@ -382,53 +379,119 @@ static int pcmcia_device_probe(struct device * dev) p_dev = to_pcmcia_dev(dev); p_drv = to_pcmcia_drv(dev->driver); + s = p_dev->socket; - if (!try_module_get(p_drv->owner)) { + if ((!p_drv->probe) || (!p_dev->function_config) || + (!try_module_get(p_drv->owner))) { ret = -EINVAL; goto put_dev; } - if (p_drv->attach) { - p_dev->instance = p_drv->attach(); - if ((!p_dev->instance) || (p_dev->client.state & CLIENT_UNBOUND)) { - printk(KERN_NOTICE "ds: unable to create instance " - "of '%s'!\n", p_drv->drv.name); - ret = -EINVAL; - } - } + ret = p_drv->probe(p_dev); + if (ret) + goto put_module; + + /* 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 = p_dev->dev.driver_data; + if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && + (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) + pcmcia_add_pseudo_device(p_dev->socket); + put_module: if (ret) module_put(p_drv->owner); put_dev: - if ((ret) || !(p_drv->attach)) + 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; + + ds_dbg(2, "unbind_request(%d)\n", s->sock); + + + 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); + + 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; - /* detach the "instance" */ p_dev = to_pcmcia_dev(dev); p_drv = to_pcmcia_drv(dev->driver); - if (p_drv) { - if ((p_drv->detach) && (p_dev->instance)) { - p_drv->detach(p_dev->instance); - /* from pcmcia_probe_device */ - put_device(&p_dev->dev); - } - module_put(p_drv->owner); - } + /* If we're removing the primary module driving a + * pseudo multi-function card, we need to unbind + * all devices + */ + did = p_dev->dev.driver_data; + 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) + printk(KERN_INFO "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)) + printk(KERN_INFO "pcmcia: driver %s did not release windows 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 */ @@ -436,9 +499,13 @@ 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; + 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, p_dev->func, CISTPL_MANFID, &manf_id)) { p_dev->manf_id = manf_id.manf; @@ -455,26 +522,33 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) /* 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; + 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)) { + CISTPL_DEVICE_GEO, devgeo)) { ds_dbg(0, "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, p_dev->func, CISTPL_VERS_1, - &vers1)) { - for (i=0; i < vers1.ns; i++) { + vers1)) { + for (i=0; i < vers1->ns; i++) { char *tmp; unsigned int length; - tmp = vers1.str + vers1.ofs[i]; + tmp = vers1->str + vers1->ofs[i]; length = strlen(tmp) + 1; - if ((length < 3) || (length > 255)) + if ((length < 2) || (length > 255)) continue; p_dev->prod_id[i] = kmalloc(sizeof(char) * length, @@ -487,6 +561,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) } } + kfree(vers1); return 0; } @@ -498,62 +573,95 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev) * won't work, this doesn't matter much at the moment: the driver core doesn't * support it either. */ -static DECLARE_MUTEX(device_add_lock); +static DEFINE_MUTEX(device_add_lock); -static struct pcmcia_device * pcmcia_device_add(struct pcmcia_bus_socket *s, unsigned int function) +struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) { - struct pcmcia_device *p_dev; + struct pcmcia_device *p_dev, *tmp_dev; unsigned long flags; + int bus_id_len; - s = pcmcia_get_bus_socket(s); + s = pcmcia_get_socket(s); if (!s) return NULL; - down(&device_add_lock); + mutex_lock(&device_add_lock); + + /* max of 2 devices per card */ + if (s->device_count == 2) + goto err_put; - p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL); + p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); if (!p_dev) goto err_put; - memset(p_dev, 0, sizeof(struct pcmcia_device)); - p_dev->socket = s->parent; + p_dev->socket = s; p_dev->device_no = (s->device_count++); p_dev->func = function; + if (s->functions <= function) + s->functions = function + 1; p_dev->dev.bus = &pcmcia_bus_type; - p_dev->dev.parent = s->parent->dev.dev; + p_dev->dev.parent = s->dev.dev; p_dev->dev.release = pcmcia_release_dev; - sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); + bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); + + p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL); + if (!p_dev->devname) + goto err_free; + sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id); /* compat */ - p_dev->client.client_magic = CLIENT_MAGIC; - p_dev->client.Socket = s->parent; - p_dev->client.Function = function; - p_dev->client.state = CLIENT_UNBOUND; + 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; + kref_get(&p_dev->function_config->ref); + } /* Add to the list in pcmcia_bus_socket */ - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - list_add_tail(&p_dev->socket_device_list, &s->devices_list); + list_add(&p_dev->socket_device_list, &s->devices_list); + spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - if (device_register(&p_dev->dev)) { - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - list_del(&p_dev->socket_device_list); - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + if (!p_dev->function_config) { + 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); + } - goto err_free; - } + printk(KERN_NOTICE "pcmcia: registering new device %s\n", + p_dev->devname); + + pcmcia_device_query(p_dev); - up(&device_add_lock); + 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: - up(&device_add_lock); - pcmcia_put_bus_socket(s); + mutex_unlock(&device_add_lock); + pcmcia_put_socket(s); return NULL; } @@ -569,7 +677,9 @@ static int pcmcia_card_add(struct pcmcia_socket *s) if (!(s->resource_setup_done)) return -EAGAIN; /* try again, but later... */ - pcmcia_validate_mem(s); + if (pcmcia_validate_mem(s)) + return -EAGAIN; /* try again, but later... */ + ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo); if (ret || !cisinfo.Chains) { ds_dbg(0, "invalid CIS or invalid resources\n"); @@ -581,37 +691,248 @@ static int pcmcia_card_add(struct pcmcia_socket *s) else no_funcs = 1; - /* this doesn't handle multifunction devices on one pcmcia function - * yet. */ for (i=0; i < no_funcs; i++) - pcmcia_device_add(s->pcmcia, i); + pcmcia_device_add(s, i); return (ret); } +static void pcmcia_delayed_add_pseudo_device(void *data) +{ + struct pcmcia_socket *s = data; + pcmcia_device_add(s, 0); + s->pcmcia_state.device_add_pending = 0; +} + +static int pcmcia_requery(struct device *dev, void * _data) +{ + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + if (!p_dev->dev.driver) + pcmcia_device_query(p_dev); + + return 0; +} + +static void pcmcia_bus_rescan(struct pcmcia_socket *skt) +{ + int no_devices=0; + unsigned long flags; + + /* must be called with skt_mutex held */ + 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 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) { + int 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. */ + bus_rescan_devices(&pcmcia_bus_type); +} + +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. + */ + if (!dev->allow_func_id_match) + return 0; + } + + if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { + 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->dev.driver_data = (void *) 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; +#ifdef CONFIG_PCMCIA_IOCTL /* matching by cardmgr */ if (p_dev->cardmgr == p_drv) return 1; +#endif + + while (did && did->match_flags) { + if (pcmcia_devmatch(p_dev, did)) + return 1; + did++; + } + + return 0; +} + +#ifdef CONFIG_HOTPLUG + +static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, + char *buffer, int buffer_size) +{ + struct pcmcia_device *p_dev; + int i, length = 0; + 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])); + } + + i = 0; + + if (add_uevent_var(envp, num_envp, &i, + buffer, buffer_size, &length, + "SOCKET_NO=%u", + p_dev->socket->sock)) + return -ENOMEM; + + if (add_uevent_var(envp, num_envp, &i, + buffer, buffer_size, &length, + "DEVICE_NO=%02X", + p_dev->device_no)) + return -ENOMEM; + + if (add_uevent_var(envp, num_envp, &i, + buffer, buffer_size, &length, + "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; + + envp[i] = NULL; return 0; } +#else + +static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, + char *buffer, int buffer_size) +{ + return -ENODEV; +} + +#endif + /************************ per-device sysfs output ***************************/ #define pcmcia_device_attr(field, test, format) \ -static ssize_t field##_show (struct device *dev, char *buf) \ +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, char *buf) \ +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; \ @@ -626,940 +947,324 @@ 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 struct device_attribute pcmcia_dev_attrs[] = { - __ATTR(function, 0444, func_show, NULL), - __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_NULL, -}; +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"); +} - These manage a ring buffer of events pending for one user process - -======================================================================*/ - -static int queue_empty(user_info_t *user) +static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { - return (user->event_head == user->event_tail); -} + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + int ret = 0; -static event_t get_queued_event(user_info_t *user) -{ - user->event_tail = (user->event_tail+1) % MAX_EVENTS; - return user->event[user->event_tail]; -} + if (!count) + return -EINVAL; -static void queue_event(user_info_t *user, event_t event) -{ - user->event_head = (user->event_head+1) % MAX_EVENTS; - if (user->event_head == user->event_tail) - user->event_tail = (user->event_tail+1) % MAX_EVENTS; - user->event[user->event_head] = event; -} + if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) + ret = dpm_runtime_suspend(dev, PMSG_SUSPEND); + else if (p_dev->suspended && !strncmp(buf, "on", 2)) + dpm_runtime_resume(dev); -static void handle_event(struct pcmcia_bus_socket *s, event_t event) -{ - user_info_t *user; - for (user = s->user; user; user = user->next) - queue_event(user, event); - wake_up_interruptible(&s->queue); + return ret ? ret : count; } -/*====================================================================== - - The card status event handler. - -======================================================================*/ - -struct send_event_data { - struct pcmcia_socket *skt; - event_t event; - int priority; -}; - -static int send_event_callback(struct device *dev, void * _data) +static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); - struct send_event_data *data = _data; - - /* we get called for all sockets, but may only pass the event - * for drivers _on the affected socket_ */ - if (p_dev->socket != data->skt) - return 0; - - if (p_dev->client.state & (CLIENT_UNBOUND|CLIENT_STALE)) - return 0; - - if (p_dev->client.EventMask & data->event) - return EVENT(&p_dev->client, data->event, data->priority); + int i; + u32 hash[4] = { 0, 0, 0, 0}; - return 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 int send_event(struct pcmcia_socket *s, event_t event, int priority) +static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) { - int ret = 0; - struct send_event_data private; - struct pcmcia_bus_socket *skt = pcmcia_get_bus_socket(s->pcmcia); + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); - if (!skt) - return 0; + if (!count) + return -EINVAL; - private.skt = s; - private.event = event; - private.priority = priority; + mutex_lock(&p_dev->socket->skt_mutex); + p_dev->allow_func_id_match = 1; + mutex_unlock(&p_dev->socket->skt_mutex); - ret = bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback); + bus_rescan_devices(&pcmcia_bus_type); - pcmcia_put_bus_socket(skt); - return ret; -} /* send_event */ + 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, +}; -/* Normally, the event is passed to individual drivers after - * informing userspace. Only for CS_EVENT_CARD_REMOVAL this - * is inversed to maintain historic compatibility. - */ +/* PM support, also needed for reset */ -static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) +static int pcmcia_dev_suspend(struct device * dev, pm_message_t state) { - struct pcmcia_bus_socket *s = skt->pcmcia; + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + struct pcmcia_driver *p_drv = NULL; int ret = 0; - ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", - event, priority, s); - - switch (event) { + if (dev->driver) + p_drv = to_pcmcia_drv(dev->driver); - case CS_EVENT_CARD_REMOVAL: - s->state &= ~DS_SOCKET_PRESENT; - send_event(skt, event, priority); - unbind_request(s); - handle_event(s, event); - break; - - case CS_EVENT_CARD_INSERTION: - s->state |= DS_SOCKET_PRESENT; - pcmcia_card_add(skt); - handle_event(s, event); - break; + if (!p_drv) + goto out; - case CS_EVENT_EJECTION_REQUEST: - ret = send_event(skt, event, priority); - break; - - default: - handle_event(s, event); - send_event(skt, event, priority); - break; - } - - return 0; -} /* ds_event */ - - -/*====================================================================== + if (p_drv->suspend) { + ret = p_drv->suspend(p_dev); + if (ret) + goto out; + } - bind_request() and bind_device() are merged by now. Register_client() - is called right at the end of bind_request(), during the driver's - ->attach() call. Individual descriptions: + if (p_dev->device_no == p_dev->func) + pcmcia_release_configuration(p_dev); - bind_request() connects a socket to a particular client driver. - It looks up the specified device ID in the list of registered - drivers, binds it to the socket, and tries to create an instance - of the device. unbind_request() deletes a driver instance. - - Bind_device() associates a device driver with a particular socket. - It is normally called by Driver Services after it has identified - a newly inserted card. An instance of that driver will then be - eligible to register as a client of this socket. - - Register_client() uses the dev_info_t handle to match the - caller with a socket. The driver must have already been bound - to a socket with bind_device() -- in fact, bind_device() - allocates the client structure that will be used. + out: + if (!ret) + p_dev->suspended = 1; + return ret; +} -======================================================================*/ -static int bind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info) +static int pcmcia_dev_resume(struct device * dev) { - struct pcmcia_driver *p_drv; - struct pcmcia_device *p_dev; + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + struct pcmcia_driver *p_drv = NULL; int ret = 0; - unsigned long flags; - - s = pcmcia_get_bus_socket(s); - if (!s) - return -EINVAL; - - ds_dbg(2, "bind_request(%d, '%s')\n", s->parent->sock, - (char *)bind_info->dev_info); - - p_drv = get_pcmcia_driver(&bind_info->dev_info); - if (!p_drv) { - ret = -EINVAL; - goto err_put; - } - if (!try_module_get(p_drv->owner)) { - ret = -EINVAL; - goto err_put_driver; - } + if (dev->driver) + p_drv = to_pcmcia_drv(dev->driver); - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { - if (p_dev->func == bind_info->function) { - if ((p_dev->dev.driver == &p_drv->drv)) { - if (p_dev->cardmgr) { - /* if there's already a device - * registered, and it was registered - * by userspace before, we need to - * return the "instance". */ - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - bind_info->instance = p_dev->instance; - ret = -EBUSY; - goto err_put_module; - } else { - /* the correct driver managed to bind - * itself magically to the correct - * device. */ - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - p_dev->cardmgr = p_drv; - ret = 0; - goto err_put_module; - } - } else if (!p_dev->dev.driver) { - /* there's already a device available where - * no device has been bound to yet. So we don't - * need to register a device! */ - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - goto rescan; - } - } - } - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); + if (!p_drv) + goto out; - p_dev = pcmcia_device_add(s, bind_info->function); - if (!p_dev) { - ret = -EIO; - goto err_put_module; + if (p_dev->device_no == p_dev->func) { + ret = pcmcia_request_configuration(p_dev, &p_dev->conf); + if (ret) + goto out; } -rescan: - p_dev->cardmgr = p_drv; - - pcmcia_device_query(p_dev); + if (p_drv->resume) + ret = p_drv->resume(p_dev); - /* - * Prevent this racing with a card insertion. - */ - down(&s->parent->skt_sem); - bus_rescan_devices(&pcmcia_bus_type); - up(&s->parent->skt_sem); - - /* check whether the driver indeed matched. I don't care if this - * is racy or not, because it can only happen on cardmgr access - * paths... - */ - if (!(p_dev->dev.driver == &p_drv->drv)) - p_dev->cardmgr = NULL; - - err_put_module: - module_put(p_drv->owner); - err_put_driver: - put_driver(&p_drv->drv); - err_put: - pcmcia_put_bus_socket(s); - - return (ret); -} /* bind_request */ + out: + if (!ret) + p_dev->suspended = 0; + return ret; +} -int pcmcia_register_client(client_handle_t *handle, client_reg_t *req) +static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) { - client_t *client = NULL; - struct pcmcia_socket *s; - struct pcmcia_bus_socket *skt = NULL; - struct pcmcia_device *p_dev = NULL; - - /* Look for unbound client with matching dev_info */ - down_read(&pcmcia_socket_list_rwsem); - list_for_each_entry(s, &pcmcia_socket_list, socket_list) { - unsigned long flags; - - if (s->state & SOCKET_CARDBUS) - continue; - - skt = s->pcmcia; - if (!skt) - continue; - skt = pcmcia_get_bus_socket(skt); - if (!skt) - continue; - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - list_for_each_entry(p_dev, &skt->devices_list, socket_device_list) { - struct pcmcia_driver *p_drv; - p_dev = pcmcia_get_dev(p_dev); - if (!p_dev) - continue; - if (!(p_dev->client.state & CLIENT_UNBOUND) || - (!p_dev->dev.driver)) { - pcmcia_put_dev(p_dev); - continue; - } - p_drv = to_pcmcia_drv(p_dev->dev.driver); - if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) { - client = &p_dev->client; - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - goto found; - } - pcmcia_put_dev(p_dev); - } - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - pcmcia_put_bus_socket(skt); - } - found: - up_read(&pcmcia_socket_list_rwsem); - if (!p_dev || !client) - return -ENODEV; - - pcmcia_put_bus_socket(skt); /* safe, as we already hold a reference from bind_device */ - - *handle = client; - client->state &= ~CLIENT_UNBOUND; - client->Socket = s; - client->EventMask = req->EventMask; - client->event_handler = req->event_handler; - client->event_callback_args = req->event_callback_args; - client->event_callback_args.client_handle = client; - - if (s->state & SOCKET_CARDBUS) - client->state |= CLIENT_CARDBUS; - - if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) && - (client->Function != BIND_FN_ALL)) { - cistpl_longlink_mfc_t mfc; - if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc) - == CS_SUCCESS) - s->functions = mfc.nfn; - else - s->functions = 1; - s->config = kmalloc(sizeof(config_t) * s->functions, - GFP_KERNEL); - if (!s->config) - goto out_no_resource; - memset(s->config, 0, sizeof(config_t) * s->functions); - } - - ds_dbg(1, "register_client(): client 0x%p, dev %s\n", - client, p_dev->dev.bus_id); - if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE) - EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW); - - if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) { - if (client->EventMask & CS_EVENT_CARD_INSERTION) - EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); - } - - return CS_SUCCESS; - - out_no_resource: - pcmcia_put_dev(p_dev); - return CS_OUT_OF_RESOURCE; -} /* register_client */ -EXPORT_SYMBOL(pcmcia_register_client); - + struct pcmcia_socket *skt = _data; + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); -/*====================================================================*/ + if (p_dev->socket != skt) + return 0; -extern struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s); + return dpm_runtime_suspend(dev, PMSG_SUSPEND); +} -static int get_device_info(struct pcmcia_bus_socket *s, bind_info_t *bind_info, int first) +static int pcmcia_bus_resume_callback(struct device *dev, void * _data) { - dev_node_t *node; - struct pcmcia_device *p_dev; - unsigned long flags; - int ret = 0; - -#ifdef CONFIG_CARDBUS - /* - * Some unbelievably ugly code to associate the PCI cardbus - * device and its driver with the PCMCIA "bind" information. - */ - { - struct pci_bus *bus; - - bus = pcmcia_lookup_bus(s->parent); - if (bus) { - struct list_head *list; - struct pci_dev *dev = NULL; - - list = bus->devices.next; - while (list != &bus->devices) { - struct pci_dev *pdev = pci_dev_b(list); - list = list->next; - - if (first) { - dev = pdev; - break; - } - - /* Try to handle "next" here some way? */ - } - if (dev && dev->driver) { - strlcpy(bind_info->name, dev->driver->name, DEV_NAME_LEN); - bind_info->major = 0; - bind_info->minor = 0; - bind_info->next = NULL; - return 0; - } - } - } -#endif - - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { - if (p_dev->func == bind_info->function) { - p_dev = pcmcia_get_dev(p_dev); - if (!p_dev) - continue; - goto found; - } - } - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - return -ENODEV; - - found: - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - - if ((!p_dev->instance) || - (p_dev->instance->state & DEV_CONFIG_PENDING)) { - ret = -EAGAIN; - goto err_put; - } - - if (first) - node = p_dev->instance->dev; - else - for (node = p_dev->instance->dev; node; node = node->next) - if (node == bind_info->next) - break; - if (!node) { - ret = -ENODEV; - goto err_put; - } + struct pcmcia_socket *skt = _data; + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); - strlcpy(bind_info->name, node->dev_name, DEV_NAME_LEN); - bind_info->major = node->major; - bind_info->minor = node->minor; - bind_info->next = node->next; + if (p_dev->socket != skt) + return 0; - err_put: - pcmcia_put_dev(p_dev); - return (ret); -} /* get_device_info */ + dpm_runtime_resume(dev); -/*====================================================================*/ + return 0; +} -/* unbind _all_ devices attached to a given pcmcia_bus_socket. The - * drivers have been called with EVENT_CARD_REMOVAL before. - */ -static int unbind_request(struct pcmcia_bus_socket *s) +static int pcmcia_bus_resume(struct pcmcia_socket *skt) { - struct pcmcia_device *p_dev; - unsigned long flags; - - ds_dbg(2, "unbind_request(%d)\n", s->parent->sock); - - s->device_count = 0; - - for (;;) { - /* unregister all pcmcia_devices registered with this socket*/ - spin_lock_irqsave(&pcmcia_dev_list_lock, flags); - if (list_empty(&s->devices_list)) { - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - return 0; - } - p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); - list_del(&p_dev->socket_device_list); - p_dev->client.state |= CLIENT_STALE; - spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); - - device_unregister(&p_dev->dev); - } - + bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); return 0; -} /* unbind_request */ +} -int pcmcia_deregister_client(client_handle_t handle) +static int pcmcia_bus_suspend(struct pcmcia_socket *skt) { - struct pcmcia_socket *s; - int i; - struct pcmcia_device *p_dev = handle_to_pdev(handle); - - if (CHECK_HANDLE(handle)) - return CS_BAD_HANDLE; - - s = SOCKET(handle); - ds_dbg(1, "deregister_client(%p)\n", handle); - - if (handle->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED)) - goto warn_out; - for (i = 0; i < MAX_WIN; i++) - if (handle->state & CLIENT_WIN_REQ(i)) - goto warn_out; - - if (handle->state & CLIENT_STALE) { - handle->client_magic = 0; - handle->state &= ~CLIENT_STALE; - pcmcia_put_dev(p_dev); - } else { - handle->state = CLIENT_UNBOUND; - handle->event_handler = NULL; + if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, + pcmcia_bus_suspend_callback)) { + pcmcia_bus_resume(skt); + return -EIO; } - - return CS_SUCCESS; - warn_out: - printk(KERN_WARNING "ds: deregister_client was called too early.\n"); - return CS_IN_USE; -} /* deregister_client */ -EXPORT_SYMBOL(pcmcia_deregister_client); + return 0; +} /*====================================================================== - The user-mode PC Card device interface - -======================================================================*/ - -static int ds_open(struct inode *inode, struct file *file) -{ - socket_t i = iminor(inode); - struct pcmcia_bus_socket *s; - user_info_t *user; - - ds_dbg(0, "ds_open(socket %d)\n", i); - - s = get_socket_info_by_nr(i); - if (!s) - return -ENODEV; - s = pcmcia_get_bus_socket(s); - if (!s) - return -ENODEV; - - if ((file->f_flags & O_ACCMODE) != O_RDONLY) { - if (s->state & DS_SOCKET_BUSY) { - pcmcia_put_bus_socket(s); - return -EBUSY; - } - else - s->state |= DS_SOCKET_BUSY; - } - - user = kmalloc(sizeof(user_info_t), GFP_KERNEL); - if (!user) { - pcmcia_put_bus_socket(s); - return -ENOMEM; - } - user->event_tail = user->event_head = 0; - user->next = s->user; - user->user_magic = USER_MAGIC; - user->socket = s; - s->user = user; - file->private_data = user; + The card status event handler. - if (s->state & DS_SOCKET_PRESENT) - queue_event(user, CS_EVENT_CARD_INSERTION); - return 0; -} /* ds_open */ - -/*====================================================================*/ - -static int ds_release(struct inode *inode, struct file *file) -{ - struct pcmcia_bus_socket *s; - user_info_t *user, **link; - - ds_dbg(0, "ds_release(socket %d)\n", iminor(inode)); - - user = file->private_data; - if (CHECK_USER(user)) - goto out; - - s = user->socket; - - /* Unlink user data structure */ - if ((file->f_flags & O_ACCMODE) != O_RDONLY) { - s->state &= ~DS_SOCKET_BUSY; - } - file->private_data = NULL; - for (link = &s->user; *link; link = &(*link)->next) - if (*link == user) break; - if (link == NULL) - goto out; - *link = user->next; - user->user_magic = 0; - kfree(user); - pcmcia_put_bus_socket(s); -out: - return 0; -} /* ds_release */ +======================================================================*/ -/*====================================================================*/ +/* 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 ssize_t ds_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) +static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) { - struct pcmcia_bus_socket *s; - user_info_t *user; - int ret; + struct pcmcia_socket *s = pcmcia_get_socket(skt); - ds_dbg(2, "ds_read(socket %d)\n", iminor(file->f_dentry->d_inode)); - - if (count < 4) - return -EINVAL; + if (!s) { + printk(KERN_ERR "PCMCIA obtaining reference to socket %p " \ + "failed, event 0x%x lost!\n", skt, event); + return -ENODEV; + } - user = file->private_data; - if (CHECK_USER(user)) - return -EIO; - - s = user->socket; - if (s->state & DS_SOCKET_DEAD) - return -EIO; + ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", + event, priority, skt); - ret = wait_event_interruptible(s->queue, !queue_empty(user)); - if (ret == 0) - ret = put_user(get_queued_event(user), (int __user *)buf) ? -EFAULT : 4; + switch (event) { + case CS_EVENT_CARD_REMOVAL: + s->pcmcia_state.present = 0; + pcmcia_card_remove(skt, NULL); + handle_event(skt, event); + break; - return ret; -} /* ds_read */ + case CS_EVENT_CARD_INSERTION: + s->pcmcia_state.present = 1; + pcmcia_card_add(skt); + handle_event(skt, event); + break; -/*====================================================================*/ + case CS_EVENT_EJECTION_REQUEST: + break; -static ssize_t ds_write(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) -{ - ds_dbg(2, "ds_write(socket %d)\n", iminor(file->f_dentry->d_inode)); + case CS_EVENT_PM_SUSPEND: + case CS_EVENT_PM_RESUME: + case CS_EVENT_RESET_PHYSICAL: + case CS_EVENT_CARD_RESET: + default: + handle_event(skt, event); + break; + } - if (count != 4) - return -EINVAL; - if ((file->f_flags & O_ACCMODE) == O_RDONLY) - return -EBADF; + pcmcia_put_socket(s); - return -EIO; -} /* ds_write */ + return 0; +} /* ds_event */ -/*====================================================================*/ -/* No kernel lock - fine */ -static u_int ds_poll(struct file *file, poll_table *wait) +struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev) { - struct pcmcia_bus_socket *s; - user_info_t *user; - - ds_dbg(2, "ds_poll(socket %d)\n", iminor(file->f_dentry->d_inode)); - - user = file->private_data; - if (CHECK_USER(user)) - return POLLERR; - s = user->socket; - /* - * We don't check for a dead socket here since that - * will send cardmgr into an endless spin. - */ - poll_wait(file, &s->queue, wait); - if (!queue_empty(user)) - return POLLIN | POLLRDNORM; - return 0; -} /* ds_poll */ + struct pcmcia_device *p_dev; + struct pcmcia_device *ret = NULL; -/*====================================================================*/ + p_dev = pcmcia_get_dev(_p_dev); + if (!p_dev) + return NULL; -extern int pcmcia_adjust_resource_info(adjust_t *adj); + if (!p_dev->socket->pcmcia_state.present) + goto out; -static int ds_ioctl(struct inode * inode, struct file * file, - u_int cmd, u_long arg) -{ - struct pcmcia_bus_socket *s; - void __user *uarg = (char __user *)arg; - u_int size; - int ret, err; - ds_ioctl_arg_t *buf; - user_info_t *user; - - ds_dbg(2, "ds_ioctl(socket %d, %#x, %#lx)\n", iminor(inode), cmd, arg); - - user = file->private_data; - if (CHECK_USER(user)) - return -EIO; - - s = user->socket; - if (s->state & DS_SOCKET_DEAD) - return -EIO; - - size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; - if (size > sizeof(ds_ioctl_arg_t)) return -EINVAL; - - /* Permission check */ - if (!(cmd & IOC_OUT) && !capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (cmd & IOC_IN) { - if (!access_ok(VERIFY_READ, uarg, size)) { - ds_dbg(3, "ds_ioctl(): verify_read = %d\n", -EFAULT); - return -EFAULT; - } - } - if (cmd & IOC_OUT) { - if (!access_ok(VERIFY_WRITE, uarg, size)) { - ds_dbg(3, "ds_ioctl(): verify_write = %d\n", -EFAULT); - return -EFAULT; - } - } - buf = kmalloc(sizeof(ds_ioctl_arg_t), GFP_KERNEL); - if (!buf) - return -ENOMEM; - - err = ret = 0; - - if (cmd & IOC_IN) __copy_from_user((char *)buf, uarg, size); - - switch (cmd) { - case DS_ADJUST_RESOURCE_INFO: - ret = pcmcia_adjust_resource_info(&buf->adjust); - break; - case DS_GET_CARD_SERVICES_INFO: - ret = pcmcia_get_card_services_info(&buf->servinfo); - break; - case DS_GET_CONFIGURATION_INFO: - if (buf->config.Function && - (buf->config.Function >= s->parent->functions)) - ret = CS_BAD_ARGS; - else - ret = pccard_get_configuration_info(s->parent, - buf->config.Function, &buf->config); - break; - case DS_GET_FIRST_TUPLE: - down(&s->parent->skt_sem); - pcmcia_validate_mem(s->parent); - up(&s->parent->skt_sem); - ret = pccard_get_first_tuple(s->parent, BIND_FN_ALL, &buf->tuple); - break; - case DS_GET_NEXT_TUPLE: - ret = pccard_get_next_tuple(s->parent, BIND_FN_ALL, &buf->tuple); - break; - case DS_GET_TUPLE_DATA: - buf->tuple.TupleData = buf->tuple_parse.data; - buf->tuple.TupleDataMax = sizeof(buf->tuple_parse.data); - ret = pccard_get_tuple_data(s->parent, &buf->tuple); - break; - case DS_PARSE_TUPLE: - buf->tuple.TupleData = buf->tuple_parse.data; - ret = pccard_parse_tuple(&buf->tuple, &buf->tuple_parse.parse); - break; - case DS_RESET_CARD: - ret = pccard_reset_card(s->parent); - break; - case DS_GET_STATUS: - if (buf->status.Function && - (buf->status.Function >= s->parent->functions)) - ret = CS_BAD_ARGS; - else - ret = pccard_get_status(s->parent, buf->status.Function, &buf->status); - break; - case DS_VALIDATE_CIS: - down(&s->parent->skt_sem); - pcmcia_validate_mem(s->parent); - up(&s->parent->skt_sem); - ret = pccard_validate_cis(s->parent, BIND_FN_ALL, &buf->cisinfo); - break; - case DS_SUSPEND_CARD: - ret = pcmcia_suspend_card(s->parent); - break; - case DS_RESUME_CARD: - ret = pcmcia_resume_card(s->parent); - break; - case DS_EJECT_CARD: - err = pcmcia_eject_card(s->parent); - break; - case DS_INSERT_CARD: - err = pcmcia_insert_card(s->parent); - break; - case DS_ACCESS_CONFIGURATION_REGISTER: - if ((buf->conf_reg.Action == CS_WRITE) && !capable(CAP_SYS_ADMIN)) { - err = -EPERM; - goto free_out; - } - if (buf->conf_reg.Function && - (buf->conf_reg.Function >= s->parent->functions)) - ret = CS_BAD_ARGS; - else - ret = pccard_access_configuration_register(s->parent, - buf->conf_reg.Function, &buf->conf_reg); - break; - case DS_GET_FIRST_REGION: - case DS_GET_NEXT_REGION: - case DS_BIND_MTD: - if (!capable(CAP_SYS_ADMIN)) { - err = -EPERM; - goto free_out; - } else { - static int printed = 0; - if (!printed) { - printk(KERN_WARNING "2.6. kernels use pcmciamtd instead of memory_cs.c and do not require special\n"); - printk(KERN_WARNING "MTD handling any more.\n"); - printed++; - } - } - err = -EINVAL; - goto free_out; - break; - case DS_GET_FIRST_WINDOW: - ret = pcmcia_get_window(s->parent, &buf->win_info.handle, 0, - &buf->win_info.window); - break; - case DS_GET_NEXT_WINDOW: - ret = pcmcia_get_window(s->parent, &buf->win_info.handle, - buf->win_info.handle->index + 1, &buf->win_info.window); - break; - case DS_GET_MEM_PAGE: - ret = pcmcia_get_mem_page(buf->win_info.handle, - &buf->win_info.map); - break; - case DS_REPLACE_CIS: - ret = pcmcia_replace_cis(s->parent, &buf->cisdump); - break; - case DS_BIND_REQUEST: - if (!capable(CAP_SYS_ADMIN)) { - err = -EPERM; - goto free_out; - } - err = bind_request(s, &buf->bind_info); - break; - case DS_GET_DEVICE_INFO: - err = get_device_info(s, &buf->bind_info, 1); - break; - case DS_GET_NEXT_DEVICE: - err = get_device_info(s, &buf->bind_info, 0); - break; - case DS_UNBIND_REQUEST: - err = 0; - break; - default: - err = -EINVAL; - } - - if ((err == 0) && (ret != CS_SUCCESS)) { - ds_dbg(2, "ds_ioctl: ret = %d\n", ret); - switch (ret) { - case CS_BAD_SOCKET: case CS_NO_CARD: - err = -ENODEV; break; - case CS_BAD_ARGS: case CS_BAD_ATTRIBUTE: case CS_BAD_IRQ: - case CS_BAD_TUPLE: - err = -EINVAL; break; - case CS_IN_USE: - err = -EBUSY; break; - case CS_OUT_OF_RESOURCE: - err = -ENOSPC; break; - case CS_NO_MORE_ITEMS: - err = -ENODATA; break; - case CS_UNSUPPORTED_FUNCTION: - err = -ENOSYS; break; - default: - err = -EIO; break; - } - } + if (p_dev->_removed) + goto out; - if (cmd & IOC_OUT) { - if (__copy_to_user(uarg, (char *)buf, size)) - err = -EFAULT; - } + if (p_dev->suspended) + goto out; -free_out: - kfree(buf); - return err; -} /* ds_ioctl */ + ret = p_dev; + out: + pcmcia_put_dev(p_dev); + return ret; +} +EXPORT_SYMBOL(pcmcia_dev_present); -/*====================================================================*/ -static struct file_operations ds_fops = { - .owner = THIS_MODULE, - .open = ds_open, - .release = ds_release, - .ioctl = ds_ioctl, - .read = ds_read, - .write = ds_write, - .poll = ds_poll, +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 class_device *class_dev) +static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev, + struct class_interface *class_intf) { struct pcmcia_socket *socket = class_get_devdata(class_dev); - struct pcmcia_bus_socket *s; int ret; - s = kmalloc(sizeof(struct pcmcia_bus_socket), GFP_KERNEL); - if(!s) - return -ENOMEM; - memset(s, 0, sizeof(struct pcmcia_bus_socket)); - - /* get reference to parent socket */ - s->parent = pcmcia_get_socket(socket); - if (!s->parent) { + socket = pcmcia_get_socket(socket); + if (!socket) { printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket); - kfree (s); return -ENODEV; } - kref_init(&s->refcount); - /* * 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); - init_waitqueue_head(&s->queue); - INIT_LIST_HEAD(&s->devices_list); - - /* Set up hotline to Card Services */ - s->callback.owner = THIS_MODULE; - s->callback.event = &ds_event; - s->callback.resources_done = &pcmcia_card_add; - socket->pcmcia = s; +#ifdef CONFIG_PCMCIA_IOCTL + init_waitqueue_head(&socket->queue); +#endif + INIT_LIST_HEAD(&socket->devices_list); + INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket); + memset(&socket->pcmcia_state, 0, sizeof(u8)); + socket->device_count = 0; - ret = pccard_register_pcmcia(socket, &s->callback); + ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); if (ret) { printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket); - pcmcia_put_bus_socket(s); - socket->pcmcia = NULL; + pcmcia_put_socket(socket); return (ret); } return 0; } - -static void pcmcia_bus_remove_socket(struct class_device *class_dev) +static void pcmcia_bus_remove_socket(struct class_device *class_dev, + struct class_interface *class_intf) { struct pcmcia_socket *socket = class_get_devdata(class_dev); - if (!socket || !socket->pcmcia) + if (!socket) return; + socket->pcmcia_state.dead = 1; pccard_register_pcmcia(socket, NULL); - socket->pcmcia->state |= DS_SOCKET_DEAD; - pcmcia_put_bus_socket(socket->pcmcia); - socket->pcmcia = NULL; + pcmcia_put_socket(socket); return; } @@ -1575,34 +1280,24 @@ static struct class_interface pcmcia_bus_interface = { 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, }; -EXPORT_SYMBOL(pcmcia_bus_type); static int __init init_pcmcia_bus(void) { - int i; - spin_lock_init(&pcmcia_dev_list_lock); bus_register(&pcmcia_bus_type); class_interface_register(&pcmcia_bus_interface); - /* Set up character device for user mode clients */ - i = register_chrdev(0, "pcmcia", &ds_fops); - if (i < 0) - printk(KERN_NOTICE "unable to find a free device # for " - "Driver Services (error=%d)\n", i); - else - major_dev = i; - -#ifdef CONFIG_PROC_FS - proc_pccard = proc_mkdir("pccard", proc_bus); - if (proc_pccard) - create_proc_read_entry("drivers",0,proc_pccard,proc_read_drivers,NULL); -#endif + pcmcia_setup_ioctl(); return 0; } @@ -1612,48 +1307,13 @@ fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that static void __exit exit_pcmcia_bus(void) { - class_interface_unregister(&pcmcia_bus_interface); + pcmcia_cleanup_ioctl(); -#ifdef CONFIG_PROC_FS - if (proc_pccard) { - remove_proc_entry("drivers", proc_pccard); - remove_proc_entry("pccard", proc_bus); - } -#endif - if (major_dev != -1) - unregister_chrdev(major_dev, "pcmcia"); + class_interface_unregister(&pcmcia_bus_interface); bus_unregister(&pcmcia_bus_type); } module_exit(exit_pcmcia_bus); - -/* helpers for backwards-compatible functions */ - -static struct pcmcia_bus_socket * get_socket_info_by_nr(unsigned int nr) -{ - struct pcmcia_socket * s = pcmcia_get_socket_by_nr(nr); - if (s && s->pcmcia) - return s->pcmcia; - else - return NULL; -} - -/* backwards-compatible accessing of driver --- by name! */ - -static struct pcmcia_driver * get_pcmcia_driver (dev_info_t *dev_info) -{ - struct device_driver *drv; - struct pcmcia_driver *p_drv; - - drv = driver_find((char *) dev_info, &pcmcia_bus_type); - if (!drv) - return NULL; - - p_drv = container_of(drv, struct pcmcia_driver, drv); - - return (p_drv); -} - MODULE_ALIAS("ds");