/drivers/pcmcia/cs.c
C | 1917 lines | 1383 code | 299 blank | 235 comment | 321 complexity | 5aa5a5c2978dd148a457c35a574ad6df MD5 | raw file
Possible License(s): CC-BY-SA-3.0, GPL-2.0, LGPL-2.0
- /*
- * 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);
- /*====================================================================*/