diff options
Diffstat (limited to 'drivers/pcmcia/cs.c')
| -rw-r--r-- | drivers/pcmcia/cs.c | 1917 |
1 files changed, 1917 insertions, 0 deletions
diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c new file mode 100644 index 0000000..03fc885 --- /dev/null +++ b/drivers/pcmcia/cs.c @@ -0,0 +1,1917 @@ +/* + * cs.c -- Kernel Card Services - core services + * + * 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 + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/config.h> +#include <linux/string.h> +#include <linux/major.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/timer.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/pci.h> +#include <linux/device.h> +#include <asm/system.h> +#include <asm/irq.h> + +#define IN_CARD_SERVICES +#include <pcmcia/version.h> +#include <pcmcia/cs_types.h> +#include <pcmcia/ss.h> +#include <pcmcia/cs.h> +#include <pcmcia/bulkmem.h> +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> +#include "cs_internal.h" + +#ifdef CONFIG_PCI +#define PCI_OPT " [pci]" +#else +#define PCI_OPT "" +#endif +#ifdef CONFIG_CARDBUS +#define CB_OPT " [cardbus]" +#else +#define CB_OPT "" +#endif +#ifdef CONFIG_PM +#define PM_OPT " [pm]" +#else +#define PM_OPT "" +#endif +#if !defined(CONFIG_CARDBUS) && !defined(CONFIG_PCI) && !defined(CONFIG_PM) +#define OPTIONS " none" +#else +#define OPTIONS PCI_OPT CB_OPT PM_OPT +#endif + +static const char *release = "Linux Kernel Card Services"; +static const char *options = "options: " OPTIONS; + +/*====================================================================*/ + +/* Module parameters */ + +MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); +MODULE_DESCRIPTION("Linux Kernel Card Services\noptions:" OPTIONS); +MODULE_LICENSE("GPL"); + +#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) + +INT_MODULE_PARM(setup_delay, 10); /* centiseconds */ +INT_MODULE_PARM(resume_delay, 20); /* centiseconds */ +INT_MODULE_PARM(shutdown_delay, 3); /* centiseconds */ +INT_MODULE_PARM(vcc_settle, 40); /* centiseconds */ +INT_MODULE_PARM(reset_time, 10); /* usecs */ +INT_MODULE_PARM(unreset_delay, 10); /* centiseconds */ +INT_MODULE_PARM(unreset_check, 10); /* centiseconds */ +INT_MODULE_PARM(unreset_limit, 30); /* unreset_check's */ + +/* Access speed for attribute memory windows */ +INT_MODULE_PARM(cis_speed, 300); /* ns */ + +/* Access speed for IO windows */ +INT_MODULE_PARM(io_speed, 0); /* ns */ + +#ifdef DEBUG +static int pc_debug; + +module_param(pc_debug, int, 0644); + +int cs_debug_level(int level) +{ + return pc_debug > level; +} +#endif + +/*====================================================================*/ + +socket_state_t dead_socket = { + .csc_mask = SS_DETECT, +}; + + +/* List of all sockets, protected by a rwsem */ +LIST_HEAD(pcmcia_socket_list); +DECLARE_RWSEM(pcmcia_socket_list_rwsem); +EXPORT_SYMBOL(pcmcia_socket_list); +EXPORT_SYMBOL(pcmcia_socket_list_rwsem); + + +#ifdef CONFIG_PCMCIA_PROBE +/* mask ofIRQs already reserved by other cards, we should avoid using them */ +static u8 pcmcia_used_irq[NR_IRQS]; +#endif + +/*==================================================================== + + Low-level PC Card interface drivers need to register with Card + Services using these calls. + +======================================================================*/ + +/** + * socket drivers are expected to use the following callbacks in their + * .drv struct: + * - pcmcia_socket_dev_suspend + * - pcmcia_socket_dev_resume + * These functions check for the appropriate struct pcmcia_soket arrays, + * and pass them to the low-level functions pcmcia_{suspend,resume}_socket + */ +static int socket_resume(struct pcmcia_socket *skt); +static int socket_suspend(struct pcmcia_socket *skt); + +int pcmcia_socket_dev_suspend(struct device *dev, pm_message_t state) +{ + struct pcmcia_socket *socket; + + down_read(&pcmcia_socket_list_rwsem); + list_for_each_entry(socket, &pcmcia_socket_list, socket_list) { + if (socket->dev.dev != dev) + continue; + down(&socket->skt_sem); + socket_suspend(socket); + up(&socket->skt_sem); + } + up_read(&pcmcia_socket_list_rwsem); + + return 0; +} +EXPORT_SYMBOL(pcmcia_socket_dev_suspend); + +int pcmcia_socket_dev_resume(struct device *dev) +{ + struct pcmcia_socket *socket; + + down_read(&pcmcia_socket_list_rwsem); + list_for_each_entry(socket, &pcmcia_socket_list, socket_list) { + if (socket->dev.dev != dev) + continue; + down(&socket->skt_sem); + socket_resume(socket); + up(&socket->skt_sem); + } + up_read(&pcmcia_socket_list_rwsem); + + return 0; +} +EXPORT_SYMBOL(pcmcia_socket_dev_resume); + + +struct pcmcia_socket * pcmcia_get_socket(struct pcmcia_socket *skt) +{ + struct class_device *cl_dev = class_device_get(&skt->dev); + if (!cl_dev) + return NULL; + skt = class_get_devdata(cl_dev); + if (!try_module_get(skt->owner)) { + class_device_put(&skt->dev); + return NULL; + } + return (skt); +} +EXPORT_SYMBOL(pcmcia_get_socket); + + +void pcmcia_put_socket(struct pcmcia_socket *skt) +{ + module_put(skt->owner); + class_device_put(&skt->dev); +} +EXPORT_SYMBOL(pcmcia_put_socket); + + +static void pcmcia_release_socket(struct class_device *class_dev) +{ + struct pcmcia_socket *socket = class_get_devdata(class_dev); + + complete(&socket->socket_released); +} + +static int pccardd(void *__skt); + +/** + * pcmcia_register_socket - add a new pcmcia socket device + */ +int pcmcia_register_socket(struct pcmcia_socket *socket) +{ + int ret; + + if (!socket || !socket->ops || !socket->dev.dev || !socket->resource_ops) + return -EINVAL; + + cs_dbg(socket, 0, "pcmcia_register_socket(0x%p)\n", socket->ops); + + spin_lock_init(&socket->lock); + + if (socket->resource_ops->init) { + ret = socket->resource_ops->init(socket); + if (ret) + return (ret); + } + + /* try to obtain a socket number [yes, it gets ugly if we + * register more than 2^sizeof(unsigned int) pcmcia + * sockets... but the socket number is deprecated + * anyways, so I don't care] */ + down_write(&pcmcia_socket_list_rwsem); + if (list_empty(&pcmcia_socket_list)) + socket->sock = 0; + else { + unsigned int found, i = 1; + struct pcmcia_socket *tmp; + do { + found = 1; + list_for_each_entry(tmp, &pcmcia_socket_list, socket_list) { + if (tmp->sock == i) + found = 0; + } + i++; + } while (!found); + socket->sock = i - 1; + } + list_add_tail(&socket->socket_list, &pcmcia_socket_list); + up_write(&pcmcia_socket_list_rwsem); + + + /* set proper values in socket->dev */ + socket->dev.class_data = socket; + socket->dev.class = &pcmcia_socket_class; + snprintf(socket->dev.class_id, BUS_ID_SIZE, "pcmcia_socket%u", socket->sock); + + /* base address = 0, map = 0 */ + socket->cis_mem.flags = 0; + socket->cis_mem.speed = cis_speed; + + INIT_LIST_HEAD(&socket->cis_cache); + + init_completion(&socket->socket_released); + init_completion(&socket->thread_done); + init_waitqueue_head(&socket->thread_wait); + init_MUTEX(&socket->skt_sem); + spin_lock_init(&socket->thread_lock); + + ret = kernel_thread(pccardd, socket, CLONE_KERNEL); + if (ret < 0) + goto err; + + wait_for_completion(&socket->thread_done); + if(!socket->thread) { + printk(KERN_WARNING "PCMCIA: warning: socket thread for socket %p did not start\n", socket); + return -EIO; + } + pcmcia_parse_events(socket, SS_DETECT); + + return 0; + + err: + down_write(&pcmcia_socket_list_rwsem); + list_del(&socket->socket_list); + up_write(&pcmcia_socket_list_rwsem); + return ret; +} /* pcmcia_register_socket */ +EXPORT_SYMBOL(pcmcia_register_socket); + + +/** + * pcmcia_unregister_socket - remove a pcmcia socket device + */ +void pcmcia_unregister_socket(struct pcmcia_socket *socket) +{ + if (!socket) + return; + + cs_dbg(socket, 0, "pcmcia_unregister_socket(0x%p)\n", socket->ops); + + if (socket->thread) { + init_completion(&socket->thread_done); + socket->thread = NULL; + wake_up(&socket->thread_wait); + wait_for_completion(&socket->thread_done); + } + release_cis_mem(socket); + + /* remove from our own list */ + down_write(&pcmcia_socket_list_rwsem); + list_del(&socket->socket_list); + up_write(&pcmcia_socket_list_rwsem); + + /* wait for sysfs to drop all references */ + release_resource_db(socket); + wait_for_completion(&socket->socket_released); +} /* pcmcia_unregister_socket */ +EXPORT_SYMBOL(pcmcia_unregister_socket); + + +struct pcmcia_socket * pcmcia_get_socket_by_nr(unsigned int nr) +{ + struct pcmcia_socket *s; + + down_read(&pcmcia_socket_list_rwsem); + list_for_each_entry(s, &pcmcia_socket_list, socket_list) + if (s->sock == nr) { + up_read(&pcmcia_socket_list_rwsem); + return s; + } + up_read(&pcmcia_socket_list_rwsem); + + return NULL; + +} +EXPORT_SYMBOL(pcmcia_get_socket_by_nr); + + +/*====================================================================== + + socket_setup() and shutdown_socket() are called by the main event + handler when card insertion and removal events are received. + socket_setup() turns on socket power and resets the socket, in two stages. + shutdown_socket() unconfigures a socket and turns off socket power. + +======================================================================*/ + +static void shutdown_socket(struct pcmcia_socket *s) +{ + cs_dbg(s, 1, "shutdown_socket\n"); + + /* Blank out the socket state */ + s->socket = dead_socket; + s->ops->init(s); + s->ops->set_socket(s, &s->socket); + s->irq.AssignedIRQ = s->irq.Config = 0; + s->lock_count = 0; + destroy_cis_cache(s); +#ifdef CONFIG_CARDBUS + cb_free(s); +#endif + s->functions = 0; + if (s->config) { + kfree(s->config); + s->config = NULL; + } + + { + int status; + s->ops->get_status(s, &status); + if (status & SS_POWERON) { + printk(KERN_ERR "PCMCIA: socket %p: *** DANGER *** unable to remove socket power\n", s); + } + } +} /* shutdown_socket */ + +/*====================================================================== + + The central event handler. Send_event() sends an event to the + 16-bit subsystem, which then calls the relevant device drivers. + Parse_events() interprets the event bits from + a card status change report. Do_shutdown() handles the high + priority stuff associated with a card removal. + +======================================================================*/ + + +/* NOTE: send_event needs to be called with skt->sem held. */ + +static int send_event(struct pcmcia_socket *s, event_t event, int priority) +{ + int ret; + + if (s->state & SOCKET_CARDBUS) + return 0; + + cs_dbg(s, 1, "send_event(event %d, pri %d, callback 0x%p)\n", + event, priority, s->callback); + + if (!s->callback) + return 0; + if (!try_module_get(s->callback->owner)) + return 0; + + ret = s->callback->event(s, event, priority); + + module_put(s->callback->owner); + + return ret; +} + +static void socket_remove_drivers(struct pcmcia_socket *skt) +{ + cs_dbg(skt, 4, "remove_drivers\n"); + + send_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); +} + +static void socket_shutdown(struct pcmcia_socket *skt) +{ + cs_dbg(skt, 4, "shutdown\n"); + + socket_remove_drivers(skt); + skt->state &= SOCKET_INUSE|SOCKET_PRESENT; + msleep(shutdown_delay * 10); + skt->state &= SOCKET_INUSE; + shutdown_socket(skt); +} + +static int socket_reset(struct pcmcia_socket *skt) +{ + int status, i; + + cs_dbg(skt, 4, "reset\n"); + + skt->socket.flags |= SS_OUTPUT_ENA | SS_RESET; + skt->ops->set_socket(skt, &skt->socket); + udelay((long)reset_time); + + skt->socket.flags &= ~SS_RESET; + skt->ops->set_socket(skt, &skt->socket); + + msleep(unreset_delay * 10); + for (i = 0; i < unreset_limit; i++) { + skt->ops->get_status(skt, &status); + + if (!(status & SS_DETECT)) + return CS_NO_CARD; + + if (status & SS_READY) + return CS_SUCCESS; + + msleep(unreset_check * 10); + } + + cs_err(skt, "time out after reset.\n"); + return CS_GENERAL_FAILURE; +} + +static int socket_setup(struct pcmcia_socket *skt, int initial_delay) +{ + int status, i; + + cs_dbg(skt, 4, "setup\n"); + + skt->ops->get_status(skt, &status); + if (!(status & SS_DETECT)) + return CS_NO_CARD; + + msleep(initial_delay * 10); + + for (i = 0; i < 100; i++) { + skt->ops->get_status(skt, &status); + if (!(status & SS_DETECT)) + return CS_NO_CARD; + + if (!(status & SS_PENDING)) + break; + + msleep(100); + } + + if (status & SS_PENDING) { + cs_err(skt, "voltage interrogation timed out.\n"); + return CS_GENERAL_FAILURE; + } + + if (status & SS_CARDBUS) { + skt->state |= SOCKET_CARDBUS; +#ifndef CONFIG_CARDBUS + cs_err(skt, "cardbus cards are not supported.\n"); + return CS_BAD_TYPE; +#endif + } + + /* + * Decode the card voltage requirements, and apply power to the card. + */ + if (status & SS_3VCARD) + skt->socket.Vcc = skt->socket.Vpp = 33; + else if (!(status & SS_XVCARD)) + skt->socket.Vcc = skt->socket.Vpp = 50; + else { + cs_err(skt, "unsupported voltage key.\n"); + return CS_BAD_TYPE; + } + skt->socket.flags = 0; + skt->ops->set_socket(skt, &skt->socket); + + /* + * Wait "vcc_settle" for the supply to stabilise. + */ + msleep(vcc_settle * 10); + + skt->ops->get_status(skt, &status); + if (!(status & SS_POWERON)) { + cs_err(skt, "unable to apply power.\n"); + return CS_BAD_TYPE; + } + + return socket_reset(skt); +} + +/* + * Handle card insertion. Setup the socket, reset the card, + * and then tell the rest of PCMCIA that a card is present. + */ +static int socket_insert(struct pcmcia_socket *skt) +{ + int ret; + + cs_dbg(skt, 4, "insert\n"); + + if (!cs_socket_get(skt)) + return CS_NO_CARD; + + ret = socket_setup(skt, setup_delay); + if (ret == CS_SUCCESS) { + skt->state |= SOCKET_PRESENT; +#ifdef CONFIG_CARDBUS + if (skt->state & SOCKET_CARDBUS) { + cb_alloc(skt); + skt->state |= SOCKET_CARDBUS_CONFIG; + } +#endif + cs_dbg(skt, 4, "insert done\n"); + + send_event(skt, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); + } else { + socket_shutdown(skt); + cs_socket_put(skt); + } + + return ret; +} + +static int socket_suspend(struct pcmcia_socket *skt) +{ + if (skt->state & SOCKET_SUSPEND) + return CS_IN_USE; + + send_event(skt, CS_EVENT_PM_SUSPEND, CS_EVENT_PRI_LOW); + skt->socket = dead_socket; + skt->ops->set_socket(skt, &skt->socket); + if (skt->ops->suspend) + skt->ops->suspend(skt); + skt->state |= SOCKET_SUSPEND; + + return CS_SUCCESS; +} + +/* + * Resume a socket. If a card is present, verify its CIS against + * our cached copy. If they are different, the card has been + * replaced, and we need to tell the drivers. + */ +static int socket_resume(struct pcmcia_socket *skt) +{ + int ret; + + if (!(skt->state & SOCKET_SUSPEND)) + return CS_IN_USE; + + skt->socket = dead_socket; + skt->ops->init(skt); + skt->ops->set_socket(skt, &skt->socket); + + if (!(skt->state & SOCKET_PRESENT)) { + skt->state &= ~SOCKET_SUSPEND; + return socket_insert(skt); + } + + ret = socket_setup(skt, resume_delay); + if (ret == CS_SUCCESS) { + /* + * FIXME: need a better check here for cardbus cards. + */ + if (verify_cis_cache(skt) != 0) { + cs_dbg(skt, 4, "cis mismatch - different card\n"); + socket_remove_drivers(skt); + destroy_cis_cache(skt); + /* + * Workaround: give DS time to schedule removal. + * Remove me once the 100ms delay is eliminated + * in ds.c + */ + msleep(200); + send_event(skt, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); + } else { + cs_dbg(skt, 4, "cis matches cache\n"); + send_event(skt, CS_EVENT_PM_RESUME, CS_EVENT_PRI_LOW); + } + } else { + socket_shutdown(skt); + cs_socket_put(skt); + } + + skt->state &= ~SOCKET_SUSPEND; + + return CS_SUCCESS; +} + +static void socket_remove(struct pcmcia_socket *skt) +{ + socket_shutdown(skt); + cs_socket_put(skt); +} + +/* + * Process a socket card detect status change. + * + * If we don't have a card already present, delay the detect event for + * about 20ms (to be on the safe side) before reading the socket status. + * + * Some i82365-based systems send multiple SS_DETECT events during card + * insertion, and the "card present" status bit seems to bounce. This + * will probably be true with GPIO-based card detection systems after + * the product has aged. + */ +static void socket_detect_change(struct pcmcia_socket *skt) +{ + if (!(skt->state & SOCKET_SUSPEND)) { + int status; + + if (!(skt->state & SOCKET_PRESENT)) + msleep(20); + + skt->ops->get_status(skt, &status); + if ((skt->state & SOCKET_PRESENT) && + !(status & SS_DETECT)) + socket_remove(skt); + if (!(skt->state & SOCKET_PRESENT) && + (status & SS_DETECT)) + socket_insert(skt); + } +} + +static int pccardd(void *__skt) +{ + struct pcmcia_socket *skt = __skt; + DECLARE_WAITQUEUE(wait, current); + int ret; + + daemonize("pccardd"); + + skt->thread = current; + skt->socket = dead_socket; + skt->ops->init(skt); + skt->ops->set_socket(skt, &skt->socket); + + /* register with the device core */ + ret = class_device_register(&skt->dev); + if (ret) { + printk(KERN_WARNING "PCMCIA: unable to register socket 0x%p\n", + skt); + skt->thread = NULL; + complete_and_exit(&skt->thread_done, 0); + } + complete(&skt->thread_done); + + add_wait_queue(&skt->thread_wait, &wait); + for (;;) { + unsigned long flags; + unsigned int events; + + set_current_state(TASK_INTERRUPTIBLE); + + spin_lock_irqsave(&skt->thread_lock, flags); + events = skt->thread_events; + skt->thread_events = 0; + spin_unlock_irqrestore(&skt->thread_lock, flags); + + if (events) { + down(&skt->skt_sem); + if (events & SS_DETECT) + socket_detect_change(skt); + if (events & SS_BATDEAD) + send_event(skt, CS_EVENT_BATTERY_DEAD, CS_EVENT_PRI_LOW); + if (events & SS_BATWARN) + send_event(skt, CS_EVENT_BATTERY_LOW, CS_EVENT_PRI_LOW); + if (events & SS_READY) + send_event(skt, CS_EVENT_READY_CHANGE, CS_EVENT_PRI_LOW); + up(&skt->skt_sem); + continue; + } + + schedule(); + try_to_freeze(PF_FREEZE); + + if (!skt->thread) + break; + } + remove_wait_queue(&skt->thread_wait, &wait); + + /* remove from the device core */ + class_device_unregister(&skt->dev); + + complete_and_exit(&skt->thread_done, 0); +} + +/* + * Yenta (at least) probes interrupts before registering the socket and + * starting the handler thread. + */ +void pcmcia_parse_events(struct pcmcia_socket *s, u_int events) +{ + cs_dbg(s, 4, "parse_events: events %08x\n", events); + if (s->thread) { + spin_lock(&s->thread_lock); + s->thread_events |= events; + spin_unlock(&s->thread_lock); + + wake_up(&s->thread_wait); + } +} /* pcmcia_parse_events */ + + +/*====================================================================== + + Special stuff for managing IO windows, because they are scarce. + +======================================================================*/ + +static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base, + ioaddr_t num, u_int lines) +{ + int i; + kio_addr_t try, align; + + align = (*base) ? (lines ? 1<<lines : 0) : 1; + if (align && (align < num)) { + if (*base) { + cs_dbg(s, 0, "odd IO request: num %#x align %#lx\n", + num, align); + align = 0; + } else + while (align && (align < num)) align <<= 1; + } + if (*base & ~(align-1)) { + cs_dbg(s, 0, "odd IO request: base %#x align %#lx\n", + *base, align); + align = 0; + } + if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { + *base = s->io_offset | (*base & 0x0fff); + return 0; + } + /* Check for an already-allocated window that must conflict with + what was asked for. It is a hack because it does not catch all + potential conflicts, just the most obvious ones. */ + for (i = 0; i < MAX_IO_WIN; i++) + if ((s->io[i].NumPorts != 0) && + ((s->io[i].BasePort & (align-1)) == *base)) + return 1; + for (i = 0; i < MAX_IO_WIN; i++) { + if (s->io[i].NumPorts == 0) { + s->io[i].res = find_io_region(*base, num, align, s); + if (s->io[i].res) { + s->io[i].Attributes = attr; + s->io[i].BasePort = *base = s->io[i].res->start; + s->io[i].NumPorts = s->io[i].InUse = num; + break; + } else + return 1; + } else if (s->io[i].Attributes != attr) + continue; + /* Try to extend top of window */ + try = s->io[i].BasePort + s->io[i].NumPorts; + if ((*base == 0) || (*base == try)) + if (adjust_io_region(s->io[i].res, s->io[i].res->start, + s->io[i].res->end + num, s) == 0) { + *base = try; + s->io[i].NumPorts += num; + s->io[i].InUse += num; + break; + } + /* Try to extend bottom of window */ + try = s->io[i].BasePort - num; + if ((*base == 0) || (*base == try)) + if (adjust_io_region(s->io[i].res, s->io[i].res->start - num, + s->io[i].res->end, s) == 0) { + s->io[i].BasePort = *base = try; + s->io[i].NumPorts += num; + s->io[i].InUse += num; + break; + } + } + return (i == MAX_IO_WIN); +} /* alloc_io_space */ + +static void release_io_space(struct pcmcia_socket *s, ioaddr_t base, + ioaddr_t num) +{ + int i; + + for (i = 0; i < MAX_IO_WIN; i++) { + if ((s->io[i].BasePort <= base) && + (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) { + s->io[i].InUse -= num; + /* Free the window if no one else is using it */ + if (s->io[i].InUse == 0) { + s->io[i].NumPorts = 0; + release_resource(s->io[i].res); + kfree(s->io[i].res); + s->io[i].res = NULL; + } + } + } +} + +/*====================================================================== + + Access_configuration_register() reads and writes configuration + registers in attribute memory. Memory window 0 is reserved for + this and the tuple reading services. + +======================================================================*/ + +int pccard_access_configuration_register(struct pcmcia_socket *s, + unsigned int function, + conf_reg_t *reg) +{ + config_t *c; + int addr; + u_char val; + + if (!s || !s->config) + return CS_NO_CARD; + + c = &s->config[function]; + + if (c == NULL) + return CS_NO_CARD; + + if (!(c->state & CONFIG_LOCKED)) + return CS_CONFIGURATION_LOCKED; + + addr = (c->ConfigBase + reg->Offset) >> 1; + + switch (reg->Action) { + case CS_READ: + read_cis_mem(s, 1, addr, 1, &val); + reg->Value = val; + break; + case CS_WRITE: + val = reg->Value; + write_cis_mem(s, 1, addr, 1, &val); + break; + default: + return CS_BAD_ARGS; + break; + } + return CS_SUCCESS; +} /* access_configuration_register */ +EXPORT_SYMBOL(pccard_access_configuration_register); + + +/*====================================================================*/ + +int pccard_get_configuration_info(struct pcmcia_socket *s, + unsigned int function, + config_info_t *config) +{ + config_t *c; + + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + + config->Function = function; + +#ifdef CONFIG_CARDBUS + if (s->state & SOCKET_CARDBUS) { + memset(config, 0, sizeof(config_info_t)); + config->Vcc = s->socket.Vcc; + config->Vpp1 = config->Vpp2 = s->socket.Vpp; + config->Option = s->cb_dev->subordinate->number; + if (s->state & SOCKET_CARDBUS_CONFIG) { + config->Attributes = CONF_VALID_CLIENT; + config->IntType = INT_CARDBUS; + config->AssignedIRQ = s->irq.AssignedIRQ; + if (config->AssignedIRQ) + config->Attributes |= CONF_ENABLE_IRQ; + config->BasePort1 = s->io[0].BasePort; + config->NumPorts1 = s->io[0].NumPorts; + } + return CS_SUCCESS; + } +#endif + + c = (s->config != NULL) ? &s->config[function] : NULL; + + if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { + config->Attributes = 0; + config->Vcc = s->socket.Vcc; + config->Vpp1 = config->Vpp2 = s->socket.Vpp; + return CS_SUCCESS; + } + + /* !!! This is a hack !!! */ + memcpy(&config->Attributes, &c->Attributes, sizeof(config_t)); + config->Attributes |= CONF_VALID_CLIENT; + config->CardValues = c->CardValues; + config->IRQAttributes = c->irq.Attributes; + config->AssignedIRQ = s->irq.AssignedIRQ; + config->BasePort1 = c->io.BasePort1; + config->NumPorts1 = c->io.NumPorts1; + config->Attributes1 = c->io.Attributes1; + config->BasePort2 = c->io.BasePort2; + config->NumPorts2 = c->io.NumPorts2; + config->Attributes2 = c->io.Attributes2; + config->IOAddrLines = c->io.IOAddrLines; + + return CS_SUCCESS; +} /* get_configuration_info */ +EXPORT_SYMBOL(pccard_get_configuration_info); + +/*====================================================================== + + Return information about this version of Card Services. + +======================================================================*/ + +int pcmcia_get_card_services_info(servinfo_t *info) +{ + unsigned int socket_count = 0; + struct list_head *tmp; + info->Signature[0] = 'C'; + info->Signature[1] = 'S'; + down_read(&pcmcia_socket_list_rwsem); + list_for_each(tmp, &pcmcia_socket_list) + socket_count++; + up_read(&pcmcia_socket_list_rwsem); + info->Count = socket_count; + info->Revision = CS_RELEASE_CODE; + info->CSLevel = 0x0210; + info->VendorString = (char *)release; + return CS_SUCCESS; +} /* get_card_services_info */ + + +/*====================================================================*/ + +int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, int idx, win_req_t *req) +{ + window_t *win; + int w; + + if (!s || !(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + for (w = idx; w < MAX_WIN; w++) + if (s->state & SOCKET_WIN_REQ(w)) break; + if (w == MAX_WIN) + return CS_NO_MORE_ITEMS; + win = &s->win[w]; + req->Base = win->ctl.res->start; + req->Size = win->ctl.res->end - win->ctl.res->start + 1; + req->AccessSpeed = win->ctl.speed; + req->Attributes = 0; + if (win->ctl.flags & MAP_ATTRIB) + req->Attributes |= WIN_MEMORY_TYPE_AM; + if (win->ctl.flags & MAP_ACTIVE) + req->Attributes |= WIN_ENABLE; + if (win->ctl.flags & MAP_16BIT) + req->Attributes |= WIN_DATA_WIDTH_16; + if (win->ctl.flags & MAP_USE_WAIT) + req->Attributes |= WIN_USE_WAIT; + *handle = win; + return CS_SUCCESS; +} /* get_window */ +EXPORT_SYMBOL(pcmcia_get_window); + +/*===================================================================== + + Return the PCI device associated with a card.. + +======================================================================*/ + +#ifdef CONFIG_CARDBUS + +struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s) +{ + if (!s || !(s->state & SOCKET_CARDBUS)) + return NULL; + + return s->cb_dev->subordinate; +} + +EXPORT_SYMBOL(pcmcia_lookup_bus); + +#endif + +/*====================================================================== + + Get the current socket state bits. We don't support the latched + SocketState yet: I haven't seen any point for it. + +======================================================================*/ + +int pccard_get_status(struct pcmcia_socket *s, unsigned int function, cs_status_t *status) +{ + config_t *c; + int val; + + s->ops->get_status(s, &val); + status->CardState = status->SocketState = 0; + status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; + status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; + status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; + status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; + if (s->state & SOCKET_SUSPEND) + status->CardState |= CS_EVENT_PM_SUSPEND; + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + + c = (s->config != NULL) ? &s->config[function] : NULL; + if ((c != NULL) && (c->state & CONFIG_LOCKED) && + (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { + u_char reg; + if (c->Present & PRESENT_PIN_REPLACE) { + read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); + status->CardState |= + (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; + status->CardState |= + (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; + status->CardState |= + (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; + status->CardState |= + (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; + } else { + /* No PRR? Then assume we're always ready */ + status->CardState |= CS_EVENT_READY_CHANGE; + } + if (c->Present & PRESENT_EXT_STATUS) { + read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); + status->CardState |= + (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; + } + return CS_SUCCESS; + } + status->CardState |= + (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; + status->CardState |= + (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; + status->CardState |= + (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; + status->CardState |= + (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; + return CS_SUCCESS; +} /* get_status */ +EXPORT_SYMBOL(pccard_get_status); + +/*====================================================================== + + Change the card address of an already open memory window. + +======================================================================*/ + +int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) +{ + if ((win == NULL) || (win->magic != WINDOW_MAGIC)) + return CS_BAD_HANDLE; + req->Page = 0; + req->CardOffset = win->ctl.card_start; + return CS_SUCCESS; +} /* get_mem_page */ + +int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) +{ + struct pcmcia_socket *s; + if ((win == NULL) || (win->magic != WINDOW_MAGIC)) + return CS_BAD_HANDLE; + if (req->Page != 0) + return CS_BAD_PAGE; + s = win->sock; + win->ctl.card_start = req->CardOffset; + if (s->ops->set_mem_map(s, &win->ctl) != 0) + return CS_BAD_OFFSET; + return CS_SUCCESS; +} /* map_mem_page */ + +/*====================================================================== + + Modify a locked socket configuration + +======================================================================*/ + +int pcmcia_modify_configuration(client_handle_t handle, + modconf_t *mod) +{ + struct pcmcia_socket *s; + config_t *c; + + if (CHECK_HANDLE(handle)) + return CS_BAD_HANDLE; + s = SOCKET(handle); c = CONFIG(handle); + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + if (!(c->state & CONFIG_LOCKED)) + return CS_CONFIGURATION_LOCKED; + + if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { + if (mod->Attributes & CONF_ENABLE_IRQ) { + c->Attributes |= CONF_ENABLE_IRQ; + s->socket.io_irq = s->irq.AssignedIRQ; + } else { + c->Attributes &= ~CONF_ENABLE_IRQ; + s->socket.io_irq = 0; + } + s->ops->set_socket(s, &s->socket); + } + + if (mod->Attributes & CONF_VCC_CHANGE_VALID) + return CS_BAD_VCC; + + /* We only allow changing Vpp1 and Vpp2 to the same value */ + if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && + (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { + if (mod->Vpp1 != mod->Vpp2) + return CS_BAD_VPP; + c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1; + if (s->ops->set_socket(s, &s->socket)) + return CS_BAD_VPP; + } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || + (mod->Attributes & CONF_VPP2_CHANGE_VALID)) + return CS_BAD_VPP; + + return CS_SUCCESS; +} /* modify_configuration */ + +/* register pcmcia_callback */ +int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c) +{ + int ret = 0; + + /* s->skt_sem also protects s->callback */ + down(&s->skt_sem); + + if (c) { + /* registration */ + if (s->callback) { + ret = -EBUSY; + goto err; + } + + s->callback = c; + + if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) + send_event(s, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); + } else + s->callback = NULL; + err: + up(&s->skt_sem); + + return ret; +} +EXPORT_SYMBOL(pccard_register_pcmcia); + +/*====================================================================*/ + +int pcmcia_release_configuration(client_handle_t handle) +{ + pccard_io_map io = { 0, 0, 0, 0, 1 }; + struct pcmcia_socket *s; + int i; + + if (CHECK_HANDLE(handle) || + !(handle->state & CLIENT_CONFIG_LOCKED)) + return CS_BAD_HANDLE; + handle->state &= ~CLIENT_CONFIG_LOCKED; + s = SOCKET(handle); + +#ifdef CONFIG_CARDBUS + if (handle->state & CLIENT_CARDBUS) + return CS_SUCCESS; +#endif + + if (!(handle->state & CLIENT_STALE)) { + config_t *c = CONFIG(handle); + if (--(s->lock_count) == 0) { + s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ + s->socket.Vpp = 0; + s->socket.io_irq = 0; + s->ops->set_socket(s, &s->socket); + } + if (c->state & CONFIG_IO_REQ) + for (i = 0; i < MAX_IO_WIN; i++) { + if (s->io[i].NumPorts == 0) + continue; + s->io[i].Config--; + if (s->io[i].Config != 0) + continue; + io.map = i; + s->ops->set_io_map(s, &io); + } + c->state &= ~CONFIG_LOCKED; + } + + return CS_SUCCESS; +} /* release_configuration */ + +/*====================================================================== + + Release_io() releases the I/O ranges allocated by a client. This + may be invoked some time after a card ejection has already dumped + the actual socket configuration, so if the client is "stale", we + don't bother checking the port ranges against the current socket + values. + +======================================================================*/ + +int pcmcia_release_io(client_handle_t handle, io_req_t *req) +{ + struct pcmcia_socket *s; + + if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IO_REQ)) + return CS_BAD_HANDLE; + handle->state &= ~CLIENT_IO_REQ; + s = SOCKET(handle); + +#ifdef CONFIG_CARDBUS + if (handle->state & CLIENT_CARDBUS) + return CS_SUCCESS; +#endif + + if (!(handle->state & CLIENT_STALE)) { + config_t *c = CONFIG(handle); + if (c->state & CONFIG_LOCKED) + return CS_CONFIGURATION_LOCKED; + if ((c->io.BasePort1 != req->BasePort1) || + (c->io.NumPorts1 != req->NumPorts1) || + (c->io.BasePort2 != req->BasePort2) || + (c->io.NumPorts2 != req->NumPorts2)) + return CS_BAD_ARGS; + c->state &= ~CONFIG_IO_REQ; + } + + release_io_space(s, req->BasePort1, req->NumPorts1); + if (req->NumPorts2) + release_io_space(s, req->BasePort2, req->NumPorts2); + + return CS_SUCCESS; +} /* release_io */ + +/*====================================================================*/ + +int pcmcia_release_irq(client_handle_t handle, irq_req_t *req) +{ + struct pcmcia_socket *s; + if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IRQ_REQ)) + return CS_BAD_HANDLE; + handle->state &= ~CLIENT_IRQ_REQ; + s = SOCKET(handle); + + if (!(handle->state & CLIENT_STALE)) { + config_t *c = CONFIG(handle); + if (c->state & CONFIG_LOCKED) + return CS_CONFIGURATION_LOCKED; + if (c->irq.Attributes != req->Attributes) + return CS_BAD_ATTRIBUTE; + if (s->irq.AssignedIRQ != req->AssignedIRQ) + return CS_BAD_IRQ; + if (--s->irq.Config == 0) { + c->state &= ~CONFIG_IRQ_REQ; + s->irq.AssignedIRQ = 0; + } + } + + if (req->Attributes & IRQ_HANDLE_PRESENT) { + free_irq(req->AssignedIRQ, req->Instance); + } + +#ifdef CONFIG_PCMCIA_PROBE + pcmcia_used_irq[req->AssignedIRQ]--; +#endif + + return CS_SUCCESS; +} /* cs_release_irq */ + +/*====================================================================*/ + +int pcmcia_release_window(window_handle_t win) +{ + struct pcmcia_socket *s; + + if ((win == NULL) || (win->magic != WINDOW_MAGIC)) + return CS_BAD_HANDLE; + s = win->sock; + if (!(win->handle->state & CLIENT_WIN_REQ(win->index))) + return CS_BAD_HANDLE; + + /* Shut down memory window */ + win->ctl.flags &= ~MAP_ACTIVE; + s->ops->set_mem_map(s, &win->ctl); + s->state &= ~SOCKET_WIN_REQ(win->index); + + /* Release system memory */ + if (win->ctl.res) { + release_resource(win->ctl.res); + kfree(win->ctl.res); + win->ctl.res = NULL; + } + win->handle->state &= ~CLIENT_WIN_REQ(win->index); + + win->magic = 0; + + return CS_SUCCESS; +} /* release_window */ + +/*====================================================================*/ + +int pcmcia_request_configuration(client_handle_t handle, + config_req_t *req) +{ + int i; + u_int base; + struct pcmcia_socket *s; + config_t *c; + pccard_io_map iomap; + + if (CHECK_HANDLE(handle)) + return CS_BAD_HANDLE; + s = SOCKET(handle); + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + +#ifdef CONFIG_CARDBUS + if (handle->state & CLIENT_CARDBUS) + return CS_UNSUPPORTED_MODE; +#endif + + if (req->IntType & INT_CARDBUS) + return CS_UNSUPPORTED_MODE; + c = CONFIG(handle); + if (c->state & CONFIG_LOCKED) + return CS_CONFIGURATION_LOCKED; + + /* Do power control. We don't allow changes in Vcc. */ + if (s->socket.Vcc != req->Vcc) + return CS_BAD_VCC; + if (req->Vpp1 != req->Vpp2) + return CS_BAD_VPP; + s->socket.Vpp = req->Vpp1; + if (s->ops->set_socket(s, &s->socket)) + return CS_BAD_VPP; + + c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1; + + /* Pick memory or I/O card, DMA mode, interrupt */ + c->IntType = req->IntType; + c->Attributes = req->Attributes; + if (req->IntType & INT_MEMORY_AND_IO) + s->socket.flags |= SS_IOCARD; + if (req->IntType & INT_ZOOMED_VIDEO) + s->socket.flags |= SS_ZVCARD | SS_IOCARD; + if (req->Attributes & CONF_ENABLE_DMA) + s->socket.flags |= SS_DMA_MODE; + if (req->Attributes & CONF_ENABLE_SPKR) + s->socket.flags |= SS_SPKR_ENA; + if (req->Attributes & CONF_ENABLE_IRQ) + s->socket.io_irq = s->irq.AssignedIRQ; + else + s->socket.io_irq = 0; + s->ops->set_socket(s, &s->socket); + s->lock_count++; + + /* Set up CIS configuration registers */ + base = c->ConfigBase = req->ConfigBase; + c->Present = c->CardValues = req->Present; + if (req->Present & PRESENT_COPY) { + c->Copy = req->Copy; + write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); + } + if (req->Present & PRESENT_OPTION) { + if (s->functions == 1) { + c->Option = req->ConfigIndex & COR_CONFIG_MASK; + } else { + c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; + c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; + if (req->Present & PRESENT_IOBASE_0) + c->Option |= COR_ADDR_DECODE; + } + if (c->state & CONFIG_IRQ_REQ) + if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) + c->Option |= COR_LEVEL_REQ; + write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); + mdelay(40); + } + if (req->Present & PRESENT_STATUS) { + c->Status = req->Status; + write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); + } + if (req->Present & PRESENT_PIN_REPLACE) { + c->Pin = req->Pin; + write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); + } + if (req->Present & PRESENT_EXT_STATUS) { + c->ExtStatus = req->ExtStatus; + write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); + } + if (req->Present & PRESENT_IOBASE_0) { + u_char b = c->io.BasePort1 & 0xff; + write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); + b = (c->io.BasePort1 >> 8) & 0xff; + write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); + } + if (req->Present & PRESENT_IOSIZE) { + u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; + write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); + } + + /* Configure I/O windows */ + if (c->state & CONFIG_IO_REQ) { + iomap.speed = io_speed; + for (i = 0; i < MAX_IO_WIN; i++) + if (s->io[i].NumPorts != 0) { + iomap.map = i; + iomap.flags = MAP_ACTIVE; + switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) { + case IO_DATA_PATH_WIDTH_16: + iomap.flags |= MAP_16BIT; break; + case IO_DATA_PATH_WIDTH_AUTO: + iomap.flags |= MAP_AUTOSZ; break; + default: + break; + } + iomap.start = s->io[i].BasePort; + iomap.stop = iomap.start + s->io[i].NumPorts - 1; + s->ops->set_io_map(s, &iomap); + s->io[i].Config++; + } + } + + c->state |= CONFIG_LOCKED; + handle->state |= CLIENT_CONFIG_LOCKED; + return CS_SUCCESS; +} /* request_configuration */ + +/*====================================================================== + + Request_io() reserves ranges of port addresses for a socket. + I have not implemented range sharing or alias addressing. + +======================================================================*/ + +int pcmcia_request_io(client_handle_t handle, io_req_t *req) +{ + struct pcmcia_socket *s; + config_t *c; + + if (CHECK_HANDLE(handle)) + return CS_BAD_HANDLE; + s = SOCKET(handle); + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + + if (handle->state & CLIENT_CARDBUS) { +#ifdef CONFIG_CARDBUS + handle->state |= CLIENT_IO_REQ; + return CS_SUCCESS; +#else + return CS_UNSUPPORTED_FUNCTION; +#endif + } + + if (!req) + return CS_UNSUPPORTED_MODE; + c = CONFIG(handle); + if (c->state & CONFIG_LOCKED) + return CS_CONFIGURATION_LOCKED; + if (c->state & CONFIG_IO_REQ) + return CS_IN_USE; + if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) + return CS_BAD_ATTRIBUTE; + if ((req->NumPorts2 > 0) && + (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) + return CS_BAD_ATTRIBUTE; + + if (alloc_io_space(s, req->Attributes1, &req->BasePort1, + req->NumPorts1, req->IOAddrLines)) + return CS_IN_USE; + + if (req->NumPorts2) { + if (alloc_io_space(s, req->Attributes2, &req->BasePort2, + req->NumPorts2, req->IOAddrLines)) { + release_io_space(s, req->BasePort1, req->NumPorts1); + return CS_IN_USE; + } + } + + c->io = *req; + c->state |= CONFIG_IO_REQ; + handle->state |= CLIENT_IO_REQ; + return CS_SUCCESS; +} /* request_io */ + +/*====================================================================== + + Request_irq() reserves an irq for this client. + + Also, since Linux only reserves irq's when they are actually + hooked, we don't guarantee that an irq will still be available + when the configuration is locked. Now that I think about it, + there might be a way to fix this using a dummy handler. + +======================================================================*/ + +#ifdef CONFIG_PCMCIA_PROBE +static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs) +{ + return IRQ_NONE; +} +#endif + +int pcmcia_request_irq(client_handle_t handle, irq_req_t *req) +{ + struct pcmcia_socket *s; + config_t *c; + int ret = CS_IN_USE, irq = 0; + struct pcmcia_device *p_dev = handle_to_pdev(handle); + + if (CHECK_HANDLE(handle)) + return CS_BAD_HANDLE; + s = SOCKET(handle); + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + c = CONFIG(handle); + if (c->state & CONFIG_LOCKED) + return CS_CONFIGURATION_LOCKED; + if (c->state & CONFIG_IRQ_REQ) + return CS_IN_USE; + +#ifdef CONFIG_PCMCIA_PROBE + if (s->irq.AssignedIRQ != 0) { + /* If the interrupt is already assigned, it must be the same */ + irq = s->irq.AssignedIRQ; + } else { + int try; + u32 mask = s->irq_mask; + void *data = NULL; + + for (try = 0; try < 64; try++) { + irq = try % 32; + + /* marked as available by driver, and not blocked by userspace? */ + if (!((mask >> irq) & 1)) + continue; + + /* avoid an IRQ which is already used by a PCMCIA card */ + if ((try < 32) && pcmcia_used_irq[irq]) + continue; + + /* register the correct driver, if possible, of check whether + * registering a dummy handle works, i.e. if the IRQ isn't + * marked as used by the kernel resource management core */ + ret = request_irq(irq, + (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, + ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) || + (s->functions > 1) || + (irq == s->pci_irq)) ? SA_SHIRQ : 0, + p_dev->dev.bus_id, + (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); + if (!ret) { + if (!(req->Attributes & IRQ_HANDLE_PRESENT)) + free_irq(irq, data); + break; + } + } + } +#endif + if (ret) { + if (!s->pci_irq) + return ret; + irq = s->pci_irq; + } + + if (ret && req->Attributes & IRQ_HANDLE_PRESENT) { + if (request_irq(irq, req->Handler, + ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) || + (s->functions > 1) || + (irq == s->pci_irq)) ? SA_SHIRQ : 0, + p_dev->dev.bus_id, req->Instance)) + return CS_IN_USE; + } + + c->irq.Attributes = req->Attributes; + s->irq.AssignedIRQ = req->AssignedIRQ = irq; + s->irq.Config++; + + c->state |= CONFIG_IRQ_REQ; + handle->state |= CLIENT_IRQ_REQ; + +#ifdef CONFIG_PCMCIA_PROBE + pcmcia_used_irq[irq]++; +#endif + + return CS_SUCCESS; +} /* pcmcia_request_irq */ + +/*====================================================================== + + Request_window() establishes a mapping between card memory space + and system memory space. + +======================================================================*/ + +int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh) +{ + struct pcmcia_socket *s; + window_t *win; + u_long align; + int w; + + if (CHECK_HANDLE(*handle)) + return CS_BAD_HANDLE; + s = (*handle)->Socket; + if (!(s->state & SOCKET_PRESENT)) + return CS_NO_CARD; + if (req->Attributes & (WIN_PAGED | WIN_SHARED)) + return CS_BAD_ATTRIBUTE; + + /* Window size defaults to smallest available */ + if (req->Size == 0) + req->Size = s->map_size; + align = (((s->features & SS_CAP_MEM_ALIGN) || + (req->Attributes & WIN_STRICT_ALIGN)) ? + req->Size : s->map_size); + if (req->Size & (s->map_size-1)) + return CS_BAD_SIZE; + if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || + (req->Base & (align-1))) + return CS_BAD_BASE; + if (req->Base) + align = 0; + + /* Allocate system memory window */ + for (w = 0; w < MAX_WIN; w++) + if (!(s->state & SOCKET_WIN_REQ(w))) break; + if (w == MAX_WIN) + return CS_OUT_OF_RESOURCE; + + win = &s->win[w]; + win->magic = WINDOW_MAGIC; + win->index = w; + win->handle = *handle; + win->sock = s; + + if (!(s->features & SS_CAP_STATIC_MAP)) { + win->ctl.res = find_mem_region(req->Base, req->Size, align, + (req->Attributes & WIN_MAP_BELOW_1MB), s); + if (!win->ctl.res) + return CS_IN_USE; + } + (*handle)->state |= CLIENT_WIN_REQ(w); + + /* Configure the socket controller */ + win->ctl.map = w+1; + win->ctl.flags = 0; + win->ctl.speed = req->AccessSpeed; + if (req->Attributes & WIN_MEMORY_TYPE) + win->ctl.flags |= MAP_ATTRIB; + if (req->Attributes & WIN_ENABLE) + win->ctl.flags |= MAP_ACTIVE; + if (req->Attributes & WIN_DATA_WIDTH_16) + win->ctl.flags |= MAP_16BIT; + if (req->Attributes & WIN_USE_WAIT) + win->ctl.flags |= MAP_USE_WAIT; + win->ctl.card_start = 0; + if (s->ops->set_mem_map(s, &win->ctl) != 0) + return CS_BAD_ARGS; + s->state |= SOCKET_WIN_REQ(w); + + /* Return window handle */ + if (s->features & SS_CAP_STATIC_MAP) { + req->Base = win->ctl.static_start; + } else { + req->Base = win->ctl.res->start; + } + *wh = win; + + return CS_SUCCESS; +} /* request_window */ + +/*====================================================================== + + I'm not sure which "reset" function this is supposed to use, + but for now, it uses the low-level interface's reset, not the + CIS register. + +======================================================================*/ + +int pccard_reset_card(struct pcmcia_socket *skt) +{ + int ret; + + cs_dbg(skt, 1, "resetting socket\n"); + + down(&skt->skt_sem); + do { + if (!(skt->state & SOCKET_PRESENT)) { + ret = CS_NO_CARD; + break; + } + if (skt->state & SOCKET_SUSPEND) { + ret = CS_IN_USE; + break; + } + if (skt->state & SOCKET_CARDBUS) { + ret = CS_UNSUPPORTED_FUNCTION; + break; + } + + ret = send_event(skt, CS_EVENT_RESET_REQUEST, CS_EVENT_PRI_LOW); + if (ret == 0) { + send_event(skt, CS_EVENT_RESET_PHYSICAL, CS_EVENT_PRI_LOW); + if (socket_reset(skt) == CS_SUCCESS) + send_event(skt, CS_EVENT_CARD_RESET, CS_EVENT_PRI_LOW); + } + + ret = CS_SUCCESS; + } while (0); + up(&skt->skt_sem); + + return ret; +} /* reset_card */ +EXPORT_SYMBOL(pccard_reset_card); + +/*====================================================================== + + These shut down or wake up a socket. They are sort of user + initiated versions of the APM suspend and resume actions. + +======================================================================*/ + +int pcmcia_suspend_card(struct pcmcia_socket *skt) +{ + int ret; + + cs_dbg(skt, 1, "suspending socket\n"); + + down(&skt->skt_sem); + do { + if (!(skt->state & SOCKET_PRESENT)) { + ret = CS_NO_CARD; + break; + } + if (skt->state & SOCKET_CARDBUS) { + ret = CS_UNSUPPORTED_FUNCTION; + break; + } + ret = socket_suspend(skt); + } while (0); + up(&skt->skt_sem); + + return ret; +} /* suspend_card */ + +int pcmcia_resume_card(struct pcmcia_socket *skt) +{ + int ret; + + cs_dbg(skt, 1, "waking up socket\n"); + + down(&skt->skt_sem); + do { + if (!(skt->state & SOCKET_PRESENT)) { + ret = CS_NO_CARD; + break; + } + if (skt->state & SOCKET_CARDBUS) { + ret = CS_UNSUPPORTED_FUNCTION; + break; + } + ret = socket_resume(skt); + } while (0); + up(&skt->skt_sem); + + return ret; +} /* resume_card */ + +/*====================================================================== + + These handle user requests to eject or insert a card. + +======================================================================*/ + +int pcmcia_eject_card(struct pcmcia_socket *skt) +{ + int ret; + + cs_dbg(skt, 1, "user eject request\n"); + + down(&skt->skt_sem); + do { + if (!(skt->state & SOCKET_PRESENT)) { + ret = -ENODEV; + break; + } + + ret = send_event(skt, CS_EVENT_EJECTION_REQUEST, CS_EVENT_PRI_LOW); + if (ret != 0) { + ret = -EINVAL; + break; + } + + socket_remove(skt); + ret = 0; + } while (0); + up(&skt->skt_sem); + + return ret; +} /* eject_card */ + +int pcmcia_insert_card(struct pcmcia_socket *skt) +{ + int ret; + + cs_dbg(skt, 1, "user insert request\n"); + + down(&skt->skt_sem); + do { + if (skt->state & SOCKET_PRESENT) { + ret = -EBUSY; + break; + } + if (socket_insert(skt) == CS_NO_CARD) { + ret = -ENODEV; + break; + } + ret = 0; + } while (0); + up(&skt->skt_sem); + + return ret; +} /* insert_card */ + +/*====================================================================== + + OS-specific module glue goes here + +======================================================================*/ +/* in alpha order */ +EXPORT_SYMBOL(pcmcia_eject_card); +EXPORT_SYMBOL(pcmcia_get_card_services_info); +EXPORT_SYMBOL(pcmcia_get_mem_page); +EXPORT_SYMBOL(pcmcia_insert_card); +EXPORT_SYMBOL(pcmcia_map_mem_page); +EXPORT_SYMBOL(pcmcia_modify_configuration); +EXPORT_SYMBOL(pcmcia_release_configuration); +EXPORT_SYMBOL(pcmcia_release_io); +EXPORT_SYMBOL(pcmcia_release_irq); +EXPORT_SYMBOL(pcmcia_release_window); +EXPORT_SYMBOL(pcmcia_replace_cis); +EXPORT_SYMBOL(pcmcia_request_configuration); +EXPORT_SYMBOL(pcmcia_request_io); +EXPORT_SYMBOL(pcmcia_request_irq); +EXPORT_SYMBOL(pcmcia_request_window); +EXPORT_SYMBOL(pcmcia_resume_card); +EXPORT_SYMBOL(pcmcia_suspend_card); + +EXPORT_SYMBOL(dead_socket); +EXPORT_SYMBOL(pcmcia_parse_events); + +struct class pcmcia_socket_class = { + .name = "pcmcia_socket", + .release = pcmcia_release_socket, +}; +EXPORT_SYMBOL(pcmcia_socket_class); + + +static int __init init_pcmcia_cs(void) +{ + int ret; + printk(KERN_INFO "%s\n", release); + printk(KERN_INFO " %s\n", options); + + ret = class_register(&pcmcia_socket_class); + if (ret) + return (ret); + return class_interface_register(&pccard_sysfs_interface); +} + +static void __exit exit_pcmcia_cs(void) +{ + printk(KERN_INFO "unloading Kernel Card Services\n"); + class_interface_unregister(&pccard_sysfs_interface); + class_unregister(&pcmcia_socket_class); +} + +subsys_initcall(init_pcmcia_cs); +module_exit(exit_pcmcia_cs); + +/*====================================================================*/ + |
