patch-2.4.20 linux-2.4.20/drivers/bluetooth/bt3c_cs.c
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- Lines: 947
- Date:
Thu Nov 28 15:53:12 2002
- Orig file:
linux-2.4.19/drivers/bluetooth/bt3c_cs.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/drivers/bluetooth/bt3c_cs.c linux-2.4.20/drivers/bluetooth/bt3c_cs.c
@@ -0,0 +1,946 @@
+/*
+ *
+ * Driver for the 3Com Bluetooth PCMCIA card
+ *
+ * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
+ * Jose Orlando Pereira <jop@di.uminho.pt>
+ *
+ *
+ * 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;
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#define __KERNEL_SYSCALLS__
+
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/serial.h>
+#include <linux/serial_reg.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+/* Bit map of interrupts to choose from */
+static u_int irq_mask = 0xffff;
+static int irq_list[4] = { -1 };
+
+MODULE_PARM(irq_mask, "i");
+MODULE_PARM(irq_list, "1-4i");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>, Jose Orlando Pereira <jop@di.uminho.pt>");
+MODULE_DESCRIPTION("BlueZ driver for the 3Com Bluetooth PCMCIA card");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+typedef struct bt3c_info_t {
+ dev_link_t link;
+ dev_node_t node;
+
+ struct hci_dev hdev;
+
+ spinlock_t lock; /* For serializing operations */
+
+ struct sk_buff_head txq;
+ unsigned long tx_state;
+
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+} bt3c_info_t;
+
+
+void bt3c_config(dev_link_t *link);
+void bt3c_release(u_long arg);
+int bt3c_event(event_t event, int priority, event_callback_args_t *args);
+
+static dev_info_t dev_info = "bt3c_cs";
+
+dev_link_t *bt3c_attach(void);
+void bt3c_detach(dev_link_t *);
+
+static dev_link_t *dev_list = NULL;
+
+
+/* Transmit states */
+#define XMIT_SENDING 1
+#define XMIT_WAKEUP 2
+#define XMIT_WAITING 8
+
+/* Receiver states */
+#define RECV_WAIT_PACKET_TYPE 0
+#define RECV_WAIT_EVENT_HEADER 1
+#define RECV_WAIT_ACL_HEADER 2
+#define RECV_WAIT_SCO_HEADER 3
+#define RECV_WAIT_DATA 4
+
+
+
+/* ======================== Special I/O functions ======================== */
+
+
+#define DATA_L 0
+#define DATA_H 1
+#define ADDR_L 2
+#define ADDR_H 3
+#define CONTROL 4
+
+
+inline void bt3c_address(unsigned int iobase, unsigned short addr)
+{
+ outb(addr & 0xff, iobase + ADDR_L);
+ outb((addr >> 8) & 0xff, iobase + ADDR_H);
+}
+
+
+inline void bt3c_put(unsigned int iobase, unsigned short value)
+{
+ outb(value & 0xff, iobase + DATA_L);
+ outb((value >> 8) & 0xff, iobase + DATA_H);
+}
+
+
+inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value)
+{
+ bt3c_address(iobase, addr);
+ bt3c_put(iobase, value);
+}
+
+
+inline unsigned short bt3c_get(unsigned int iobase)
+{
+ unsigned short value = inb(iobase + DATA_L);
+
+ value |= inb(iobase + DATA_H) << 8;
+
+ return value;
+}
+
+
+inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr)
+{
+ bt3c_address(iobase, addr);
+
+ return bt3c_get(iobase);
+}
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
+{
+ int actual = 0;
+
+ bt3c_address(iobase, 0x7080);
+
+ /* Fill FIFO with current frame */
+ while (actual < len) {
+ /* Transmit next byte */
+ bt3c_put(iobase, buf[actual]);
+ actual++;
+ }
+
+ bt3c_io_write(iobase, 0x7005, actual);
+
+ return actual;
+}
+
+
+static void bt3c_write_wakeup(bt3c_info_t *info, int from)
+{
+ unsigned long flags;
+
+ if (!info) {
+ printk(KERN_WARNING "bt3c_cs: Call of write_wakeup for unknown device.\n");
+ return;
+ }
+
+ if (test_and_set_bit(XMIT_SENDING, &(info->tx_state)))
+ return;
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ do {
+ register unsigned int iobase = info->link.io.BasePort1;
+ register struct sk_buff *skb;
+ register int len;
+
+ if (!(info->link.state & DEV_PRESENT))
+ break;
+
+
+ if (!(skb = skb_dequeue(&(info->txq)))) {
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+ break;
+ }
+
+ /* Send frame */
+ len = bt3c_write(iobase, 256, skb->data, skb->len);
+
+ if (len != skb->len) {
+ printk(KERN_WARNING "bt3c_cs: very strange\n");
+ }
+
+ kfree_skb(skb);
+
+ info->hdev.stat.byte_tx += len;
+
+ } while (0);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+}
+
+
+static void bt3c_receive(bt3c_info_t *info)
+{
+ unsigned int iobase;
+ int size = 0, avail;
+
+ if (!info) {
+ printk(KERN_WARNING "bt3c_cs: Call of receive for unknown device.\n");
+ return;
+ }
+
+ iobase = info->link.io.BasePort1;
+
+ avail = bt3c_read(iobase, 0x7006);
+ //printk("bt3c_cs: receiving %d bytes\n", avail);
+
+ bt3c_address(iobase, 0x7480);
+ while (size < avail) {
+ size++;
+ info->hdev.stat.byte_rx++;
+
+ /* Allocate packet */
+ if (info->rx_skb == NULL) {
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ if (!(info->rx_skb = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
+ printk(KERN_WARNING "bt3c_cs: Can't allocate mem for new packet.\n");
+ return;
+ }
+ }
+
+
+ if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
+
+ info->rx_skb->dev = (void *)&(info->hdev);
+ info->rx_skb->pkt_type = inb(iobase + DATA_L);
+ inb(iobase + DATA_H);
+ //printk("bt3c: PACKET_TYPE=%02x\n", info->rx_skb->pkt_type);
+
+ switch (info->rx_skb->pkt_type) {
+
+ case HCI_EVENT_PKT:
+ info->rx_state = RECV_WAIT_EVENT_HEADER;
+ info->rx_count = HCI_EVENT_HDR_SIZE;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ info->rx_state = RECV_WAIT_ACL_HEADER;
+ info->rx_count = HCI_ACL_HDR_SIZE;
+ break;
+
+ case HCI_SCODATA_PKT:
+ info->rx_state = RECV_WAIT_SCO_HEADER;
+ info->rx_count = HCI_SCO_HDR_SIZE;
+ break;
+
+ default:
+ /* Unknown packet */
+ printk(KERN_WARNING "bt3c_cs: Unknown HCI packet with type 0x%02x received.\n", info->rx_skb->pkt_type);
+ info->hdev.stat.err_rx++;
+ clear_bit(HCI_RUNNING, &(info->hdev.flags));
+
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ } else {
+
+ __u8 x = inb(iobase + DATA_L);
+
+ *skb_put(info->rx_skb, 1) = x;
+ inb(iobase + DATA_H);
+ info->rx_count--;
+
+ if (info->rx_count == 0) {
+
+ int dlen;
+ hci_event_hdr *eh;
+ hci_acl_hdr *ah;
+ hci_sco_hdr *sh;
+
+ switch (info->rx_state) {
+
+ case RECV_WAIT_EVENT_HEADER:
+ eh = (hci_event_hdr *)(info->rx_skb->data);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = eh->plen;
+ break;
+
+ case RECV_WAIT_ACL_HEADER:
+ ah = (hci_acl_hdr *)(info->rx_skb->data);
+ dlen = __le16_to_cpu(ah->dlen);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = dlen;
+ break;
+
+ case RECV_WAIT_SCO_HEADER:
+ sh = (hci_sco_hdr *)(info->rx_skb->data);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = sh->dlen;
+ break;
+
+ case RECV_WAIT_DATA:
+ hci_recv_frame(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ }
+
+ }
+
+ }
+
+ bt3c_io_write(iobase, 0x7006, 0x0000);
+}
+
+
+void bt3c_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
+{
+ bt3c_info_t *info = dev_inst;
+ unsigned int iobase;
+ int iir;
+
+ if (!info) {
+ printk(KERN_WARNING "bt3c_cs: Call of irq %d for unknown device.\n", irq);
+ return;
+ }
+
+ iobase = info->link.io.BasePort1;
+
+ spin_lock(&(info->lock));
+
+ iir = inb(iobase + CONTROL);
+ if (iir & 0x80) {
+ int stat = bt3c_read(iobase, 0x7001);
+
+ if ((stat & 0xff) == 0x7f) {
+ printk(KERN_WARNING "bt3c_cs: STRANGE stat=%04x\n", stat);
+ } else if ((stat & 0xff) != 0xff) {
+ if (stat & 0x0020) {
+ int stat = bt3c_read(iobase, 0x7002) & 0x10;
+ printk(KERN_WARNING "bt3c_cs: antena %s\n", stat ? "OUT" : "IN");
+ }
+ if (stat & 0x0001)
+ bt3c_receive(info);
+ if (stat & 0x0002) {
+ //printk("bt3c_cs: ACK %04x\n", stat);
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+ bt3c_write_wakeup(info, 1);
+ }
+
+ bt3c_io_write(iobase, 0x7001, 0x0000);
+
+ outb(iir, iobase + CONTROL);
+ }
+ }
+
+ spin_unlock(&(info->lock));
+}
+
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int bt3c_hci_flush(struct hci_dev *hdev)
+{
+ bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data);
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ return 0;
+}
+
+
+static int bt3c_hci_open(struct hci_dev *hdev)
+{
+ set_bit(HCI_RUNNING, &(hdev->flags));
+
+ return 0;
+}
+
+
+static int bt3c_hci_close(struct hci_dev *hdev)
+{
+ if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
+ return 0;
+
+ bt3c_hci_flush(hdev);
+
+ return 0;
+}
+
+
+static int bt3c_hci_send_frame(struct sk_buff *skb)
+{
+ bt3c_info_t *info;
+ struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
+
+ if (!hdev) {
+ printk(KERN_WARNING "bt3c_cs: Frame for unknown HCI device (hdev=NULL).");
+ return -ENODEV;
+ }
+
+ info = (bt3c_info_t *) (hdev->driver_data);
+
+ switch (skb->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ };
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
+ skb_queue_tail(&(info->txq), skb);
+
+ bt3c_write_wakeup(info, 0);
+
+ return 0;
+}
+
+
+static void bt3c_hci_destruct(struct hci_dev *hdev)
+{
+}
+
+
+static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
+{
+ return -ENOIOCTLCMD;
+}
+
+
+
+/* ======================== User mode firmware loader ======================== */
+
+
+#define FW_LOADER "/sbin/bluefw"
+static int errno;
+
+
+static int bt3c_fw_loader_exec(void *dev)
+{
+ char *argv[] = { FW_LOADER, "pccard", dev, NULL };
+ char *envp[] = { "HOME=/", "TERM=linux", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
+ int err;
+
+ err = exec_usermodehelper(FW_LOADER, argv, envp);
+ if (err)
+ printk(KERN_WARNING "bt3c_cs: Failed to exec \"%s pccard %s\".\n", FW_LOADER, (char *)dev);
+
+ return err;
+}
+
+
+static int bt3c_firmware_load(bt3c_info_t *info)
+{
+ sigset_t tmpsig;
+ char dev[16];
+ pid_t pid;
+ int result;
+
+ /* Check if root fs is mounted */
+ if (!current->fs->root) {
+ printk(KERN_WARNING "bt3c_cs: Root filesystem is not mounted.\n");
+ return -EPERM;
+ }
+
+ sprintf(dev, "%04x", info->link.io.BasePort1);
+
+ pid = kernel_thread(bt3c_fw_loader_exec, (void *)dev, 0);
+ if (pid < 0) {
+ printk(KERN_WARNING "bt3c_cs: Forking of kernel thread failed (errno=%d).\n", -pid);
+ return pid;
+ }
+
+ /* Block signals, everything but SIGKILL/SIGSTOP */
+ spin_lock_irq(¤t->sigmask_lock);
+ tmpsig = current->blocked;
+ siginitsetinv(¤t->blocked, sigmask(SIGKILL) | sigmask(SIGSTOP));
+ recalc_sigpending(current);
+ spin_unlock_irq(¤t->sigmask_lock);
+
+ result = waitpid(pid, NULL, __WCLONE);
+
+ /* Allow signals again */
+ spin_lock_irq(¤t->sigmask_lock);
+ current->blocked = tmpsig;
+ recalc_sigpending(current);
+ spin_unlock_irq(¤t->sigmask_lock);
+
+ if (result != pid) {
+ printk(KERN_WARNING "bt3c_cs: Waiting for pid %d failed (errno=%d).\n", pid, -result);
+ return -result;
+ }
+
+ return 0;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+int bt3c_open(bt3c_info_t *info)
+{
+ struct hci_dev *hdev;
+ int err;
+
+ spin_lock_init(&(info->lock));
+
+ skb_queue_head_init(&(info->txq));
+
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = NULL;
+
+ /* Load firmware */
+
+ if ((err = bt3c_firmware_load(info)) < 0)
+ return err;
+
+ /* Timeout before it is safe to send the first HCI packet */
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ);
+
+
+ /* Initialize and register HCI device */
+
+ hdev = &(info->hdev);
+
+ hdev->type = HCI_PCCARD;
+ hdev->driver_data = info;
+
+ hdev->open = bt3c_hci_open;
+ hdev->close = bt3c_hci_close;
+ hdev->flush = bt3c_hci_flush;
+ hdev->send = bt3c_hci_send_frame;
+ hdev->destruct = bt3c_hci_destruct;
+ hdev->ioctl = bt3c_hci_ioctl;
+
+ if (hci_register_dev(hdev) < 0) {
+ printk(KERN_WARNING "bt3c_cs: Can't register HCI device %s.\n", hdev->name);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+
+int bt3c_close(bt3c_info_t *info)
+{
+ struct hci_dev *hdev = &(info->hdev);
+
+ bt3c_hci_close(hdev);
+
+ if (hci_unregister_dev(hdev) < 0)
+ printk(KERN_WARNING "bt3c_cs: Can't unregister HCI device %s.\n", hdev->name);
+
+ return 0;
+}
+
+
+
+/* ======================== Card services ======================== */
+
+
+static void cs_error(client_handle_t handle, int func, int ret)
+{
+ error_info_t err = { func, ret };
+
+ CardServices(ReportError, handle, &err);
+}
+
+
+dev_link_t *bt3c_attach(void)
+{
+ bt3c_info_t *info;
+ client_reg_t client_reg;
+ dev_link_t *link;
+ int i, ret;
+
+ /* Create new info device */
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return NULL;
+ memset(info, 0, sizeof(*info));
+
+ link = &info->link;
+ link->priv = info;
+
+ link->release.function = &bt3c_release;
+ link->release.data = (u_long)link;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.NumPorts1 = 8;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+ link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
+
+ if (irq_list[0] == -1)
+ link->irq.IRQInfo2 = irq_mask;
+ else
+ for (i = 0; i < 4; i++)
+ link->irq.IRQInfo2 |= 1 << irq_list[i];
+
+ link->irq.Handler = bt3c_interrupt;
+ link->irq.Instance = info;
+
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.Vcc = 50;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+ client_reg.EventMask =
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &bt3c_event;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+
+ ret = CardServices(RegisterClient, &link->handle, &client_reg);
+ if (ret != CS_SUCCESS) {
+ cs_error(link->handle, RegisterClient, ret);
+ bt3c_detach(link);
+ return NULL;
+ }
+
+ return link;
+}
+
+
+void bt3c_detach(dev_link_t *link)
+{
+ bt3c_info_t *info = link->priv;
+ dev_link_t **linkp;
+ int ret;
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link)
+ break;
+
+ if (*linkp == NULL)
+ return;
+
+ del_timer(&link->release);
+
+ if (link->state & DEV_CONFIG)
+ bt3c_release((u_long)link);
+
+ if (link->handle) {
+ ret = CardServices(DeregisterClient, link->handle);
+ if (ret != CS_SUCCESS)
+ cs_error(link->handle, DeregisterClient, ret);
+ }
+
+ /* Unlink device structure, free bits */
+ *linkp = link->next;
+
+ kfree(info);
+}
+
+
+static int get_tuple(int fn, client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
+{
+ int i;
+
+ i = CardServices(fn, handle, tuple);
+ if (i != CS_SUCCESS)
+ return CS_NO_MORE_ITEMS;
+
+ i = CardServices(GetTupleData, handle, tuple);
+ if (i != CS_SUCCESS)
+ return i;
+
+ return CardServices(ParseTuple, handle, tuple, parse);
+}
+
+
+#define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
+#define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
+
+void bt3c_config(dev_link_t *link)
+{
+ static ioaddr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+ client_handle_t handle = link->handle;
+ bt3c_info_t *info = link->priv;
+ tuple_t tuple;
+ u_short buf[256];
+ cisparse_t parse;
+ cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+ config_info_t config;
+ int i, j, try, last_ret, last_fn;
+
+ tuple.TupleData = (cisdata_t *)buf;
+ tuple.TupleOffset = 0;
+ tuple.TupleDataMax = 255;
+ tuple.Attributes = 0;
+
+ /* Get configuration register information */
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ last_ret = first_tuple(handle, &tuple, &parse);
+ if (last_ret != CS_SUCCESS) {
+ last_fn = ParseTuple;
+ goto cs_failed;
+ }
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+ i = CardServices(GetConfigurationInfo, handle, &config);
+ link->conf.Vcc = config.Vcc;
+
+ /* First pass: look for a config entry that looks normal. */
+ tuple.TupleData = (cisdata_t *)buf;
+ tuple.TupleOffset = 0;
+ tuple.TupleDataMax = 255;
+ tuple.Attributes = 0;
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ /* Two tries: without IO aliases, then with aliases */
+ for (try = 0; try < 2; try++) {
+ i = first_tuple(handle, &tuple, &parse);
+ while (i != CS_NO_MORE_ITEMS) {
+ if (i != CS_SUCCESS)
+ goto next_entry;
+ if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))
+ link->conf.Vpp1 = link->conf.Vpp2 = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;
+ if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && (cf->io.win[0].base != 0)) {
+ link->conf.ConfigIndex = cf->index;
+ link->io.BasePort1 = cf->io.win[0].base;
+ link->io.IOAddrLines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK;
+ i = CardServices(RequestIO, link->handle, &link->io);
+ if (i == CS_SUCCESS)
+ goto found_port;
+ }
+next_entry:
+ i = next_tuple(handle, &tuple, &parse);
+ }
+ }
+
+ /* Second pass: try to find an entry that isn't picky about
+ its base address, then try to grab any standard serial port
+ address, and finally try to get any free port. */
+ i = first_tuple(handle, &tuple, &parse);
+ while (i != CS_NO_MORE_ITEMS) {
+ if ((i == CS_SUCCESS) && (cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
+ link->conf.ConfigIndex = cf->index;
+ for (j = 0; j < 5; j++) {
+ link->io.BasePort1 = base[j];
+ link->io.IOAddrLines = base[j] ? 16 : 3;
+ i = CardServices(RequestIO, link->handle, &link->io);
+ if (i == CS_SUCCESS)
+ goto found_port;
+ }
+ }
+ i = next_tuple(handle, &tuple, &parse);
+ }
+
+found_port:
+ if (i != CS_SUCCESS) {
+ printk(KERN_NOTICE "bt3c_cs: No usable port range found. Giving up.\n");
+ cs_error(link->handle, RequestIO, i);
+ goto failed;
+ }
+
+ i = CardServices(RequestIRQ, link->handle, &link->irq);
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestIRQ, i);
+ link->irq.AssignedIRQ = 0;
+ }
+
+ i = CardServices(RequestConfiguration, link->handle, &link->conf);
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestConfiguration, i);
+ goto failed;
+ }
+
+ MOD_INC_USE_COUNT;
+
+ if (bt3c_open(info) != 0)
+ goto failed;
+
+ strcpy(info->node.dev_name, info->hdev.name);
+ link->dev = &info->node;
+ link->state &= ~DEV_CONFIG_PENDING;
+
+ return;
+
+cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+
+failed:
+ bt3c_release((u_long)link);
+}
+
+
+void bt3c_release(u_long arg)
+{
+ dev_link_t *link = (dev_link_t *)arg;
+ bt3c_info_t *info = link->priv;
+
+ if (link->state & DEV_PRESENT)
+ bt3c_close(info);
+
+ MOD_DEC_USE_COUNT;
+
+ link->dev = NULL;
+
+ CardServices(ReleaseConfiguration, link->handle);
+ CardServices(ReleaseIO, link->handle, &link->io);
+ CardServices(ReleaseIRQ, link->handle, &link->irq);
+
+ link->state &= ~DEV_CONFIG;
+}
+
+
+int bt3c_event(event_t event, int priority, event_callback_args_t *args)
+{
+ dev_link_t *link = args->client_data;
+ bt3c_info_t *info = link->priv;
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ link->state &= ~DEV_PRESENT;
+ if (link->state & DEV_CONFIG) {
+ bt3c_close(info);
+ mod_timer(&link->release, jiffies + HZ / 20);
+ }
+ break;
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ bt3c_config(link);
+ break;
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ if (link->state & DEV_CONFIG)
+ CardServices(ReleaseConfiguration, link->handle);
+ break;
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (DEV_OK(link))
+ CardServices(RequestConfiguration, link->handle, &link->conf);
+ break;
+ }
+
+ return 0;
+}
+
+
+
+/* ======================== Module initialization ======================== */
+
+
+int __init init_bt3c_cs(void)
+{
+ servinfo_t serv;
+ int err;
+
+ CardServices(GetCardServicesInfo, &serv);
+ if (serv.Revision != CS_RELEASE_CODE) {
+ printk(KERN_NOTICE "bt3c_cs: Card Services release does not match!\n");
+ return -1;
+ }
+
+ err = register_pccard_driver(&dev_info, &bt3c_attach, &bt3c_detach);
+
+ return err;
+}
+
+
+void __exit exit_bt3c_cs(void)
+{
+ unregister_pccard_driver(&dev_info);
+
+ while (dev_list != NULL)
+ bt3c_detach(dev_list);
+}
+
+
+module_init(init_bt3c_cs);
+module_exit(exit_bt3c_cs);
+
+EXPORT_NO_SYMBOLS;
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)