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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/cs.c
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/pcmcia/cs.c')
-rw-r--r--drivers/pcmcia/cs.c1917
1 files changed, 1917 insertions, 0 deletions
diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
new file mode 100644
index 000000000000..03fc885db1c5
--- /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, &reg);
+ 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, &reg);
+ 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);
+
+/*====================================================================*/
+