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kernel / pub / scm / linux / kernel / git / wtarreau / linux-2.4 / refs/tags/v2.4.37.11 / . / drivers / bluetooth / bluecard_cs.c
blob: bd17d8adf659f2c51bacfa7a8b3ee8e4d2834e11 [file] [log] [blame]
/*
*
* Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
*
* Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
*
*
* 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>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/ioport.h>
#include <linux/spinlock.h>
#include <linux/skbuff.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 = 0x86bc;
static int irq_list[4] = { -1 };
MODULE_PARM(irq_mask, "i");
MODULE_PARM(irq_list, "1-4i");
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("BlueZ driver for the Anycom BlueCard (LSE039/LSE041)");
MODULE_LICENSE("GPL");
/* ======================== Local structures ======================== */
typedef struct bluecard_info_t {
dev_link_t link;
dev_node_t node;
struct hci_dev hdev;
spinlock_t lock; /* For serializing operations */
struct timer_list timer; /* For LED control */
struct sk_buff_head txq;
unsigned long tx_state;
unsigned long rx_state;
unsigned long rx_count;
struct sk_buff *rx_skb;
unsigned char ctrl_reg;
unsigned long hw_state; /* Status of the hardware and LED control */
} bluecard_info_t;
void bluecard_config(dev_link_t *link);
void bluecard_release(u_long arg);
int bluecard_event(event_t event, int priority, event_callback_args_t *args);
static dev_info_t dev_info = "bluecard_cs";
dev_link_t *bluecard_attach(void);
void bluecard_detach(dev_link_t *);
static dev_link_t *dev_list = NULL;
/* Default baud rate: 57600, 115200, 230400 or 460800 */
#define DEFAULT_BAUD_RATE 230400
/* Hardware states */
#define CARD_READY 1
#define CARD_HAS_PCCARD_ID 4
#define CARD_HAS_POWER_LED 5
#define CARD_HAS_ACTIVITY_LED 6
/* Transmit states */
#define XMIT_SENDING 1
#define XMIT_WAKEUP 2
#define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
#define XMIT_BUF_ONE_READY 6
#define XMIT_BUF_TWO_READY 7
#define XMIT_SENDING_READY 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 packet types */
#define PKT_BAUD_RATE_57600 0x80
#define PKT_BAUD_RATE_115200 0x81
#define PKT_BAUD_RATE_230400 0x82
#define PKT_BAUD_RATE_460800 0x83
/* These are the register offsets */
#define REG_COMMAND 0x20
#define REG_INTERRUPT 0x21
#define REG_CONTROL 0x22
#define REG_RX_CONTROL 0x24
#define REG_CARD_RESET 0x30
#define REG_LED_CTRL 0x30
/* REG_COMMAND */
#define REG_COMMAND_TX_BUF_ONE 0x01
#define REG_COMMAND_TX_BUF_TWO 0x02
#define REG_COMMAND_RX_BUF_ONE 0x04
#define REG_COMMAND_RX_BUF_TWO 0x08
#define REG_COMMAND_RX_WIN_ONE 0x00
#define REG_COMMAND_RX_WIN_TWO 0x10
/* REG_CONTROL */
#define REG_CONTROL_BAUD_RATE_57600 0x00
#define REG_CONTROL_BAUD_RATE_115200 0x01
#define REG_CONTROL_BAUD_RATE_230400 0x02
#define REG_CONTROL_BAUD_RATE_460800 0x03
#define REG_CONTROL_RTS 0x04
#define REG_CONTROL_BT_ON 0x08
#define REG_CONTROL_BT_RESET 0x10
#define REG_CONTROL_BT_RES_PU 0x20
#define REG_CONTROL_INTERRUPT 0x40
#define REG_CONTROL_CARD_RESET 0x80
/* REG_RX_CONTROL */
#define RTS_LEVEL_SHIFT_BITS 0x02
/* ======================== LED handling routines ======================== */
void bluecard_activity_led_timeout(u_long arg)
{
bluecard_info_t *info = (bluecard_info_t *)arg;
unsigned int iobase = info->link.io.BasePort1;
if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
/* Disable activity LED */
outb(0x08 | 0x20, iobase + 0x30);
} else {
/* Disable power LED */
outb(0x00, iobase + 0x30);
}
}
static void bluecard_enable_activity_led(bluecard_info_t *info)
{
unsigned int iobase = info->link.io.BasePort1;
if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
/* Enable activity LED */
outb(0x10 | 0x40, iobase + 0x30);
/* Stop the LED after HZ/4 */
mod_timer(&(info->timer), jiffies + HZ / 4);
} else {
/* Enable power LED */
outb(0x08 | 0x20, iobase + 0x30);
/* Stop the LED after HZ/2 */
mod_timer(&(info->timer), jiffies + HZ / 2);
}
}
/* ======================== Interrupt handling ======================== */
static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
{
int i, actual;
actual = (len > 15) ? 15 : len;
outb_p(actual, iobase + offset);
for (i = 0; i < actual; i++)
outb_p(buf[i], iobase + offset + i + 1);
return actual;
}
static void bluecard_write_wakeup(bluecard_info_t *info)
{
if (!info) {
printk(KERN_WARNING "bluecard_cs: Call of write_wakeup for unknown device.\n");
return;
}
if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
return;
if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
set_bit(XMIT_WAKEUP, &(info->tx_state));
return;
}
do {
register unsigned int iobase = info->link.io.BasePort1;
register unsigned int offset;
register unsigned char command;
register unsigned long ready_bit;
register struct sk_buff *skb;
register int len;
clear_bit(XMIT_WAKEUP, &(info->tx_state));
if (!(info->link.state & DEV_PRESENT))
return;
if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
break;
offset = 0x10;
command = REG_COMMAND_TX_BUF_TWO;
ready_bit = XMIT_BUF_TWO_READY;
} else {
if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
break;
offset = 0x00;
command = REG_COMMAND_TX_BUF_ONE;
ready_bit = XMIT_BUF_ONE_READY;
}
if (!(skb = skb_dequeue(&(info->txq))))
break;
if (skb->pkt_type & 0x80) {
/* Disable RTS */
info->ctrl_reg |= REG_CONTROL_RTS;
outb(info->ctrl_reg, iobase + REG_CONTROL);
}
/* Activate LED */
bluecard_enable_activity_led(info);
/* Send frame */
len = bluecard_write(iobase, offset, skb->data, skb->len);
/* Tell the FPGA to send the data */
outb_p(command, iobase + REG_COMMAND);
/* Mark the buffer as dirty */
clear_bit(ready_bit, &(info->tx_state));
if (skb->pkt_type & 0x80) {
wait_queue_head_t wait;
unsigned char baud_reg;
switch (skb->pkt_type) {
case PKT_BAUD_RATE_460800:
baud_reg = REG_CONTROL_BAUD_RATE_460800;
break;
case PKT_BAUD_RATE_230400:
baud_reg = REG_CONTROL_BAUD_RATE_230400;
break;
case PKT_BAUD_RATE_115200:
baud_reg = REG_CONTROL_BAUD_RATE_115200;
break;
case PKT_BAUD_RATE_57600:
/* Fall through... */
default:
baud_reg = REG_CONTROL_BAUD_RATE_57600;
break;
}
/* Wait until the command reaches the baseband */
init_waitqueue_head(&wait);
interruptible_sleep_on_timeout(&wait, HZ / 10);
/* Set baud on baseband */
info->ctrl_reg &= ~0x03;
info->ctrl_reg |= baud_reg;
outb(info->ctrl_reg, iobase + REG_CONTROL);
/* Enable RTS */
info->ctrl_reg &= ~REG_CONTROL_RTS;
outb(info->ctrl_reg, iobase + REG_CONTROL);
/* Wait before the next HCI packet can be send */
interruptible_sleep_on_timeout(&wait, HZ);
}
if (len == skb->len) {
kfree_skb(skb);
} else {
skb_pull(skb, len);
skb_queue_head(&(info->txq), skb);
}
info->hdev.stat.byte_tx += len;
/* Change buffer */
change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
} while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
clear_bit(XMIT_SENDING, &(info->tx_state));
}
static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
{
int i, n, len;
outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
len = inb(iobase + offset);
n = 0;
i = 1;
while (n < len) {
if (i == 16) {
outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
i = 0;
}
buf[n] = inb(iobase + offset + i);
n++;
i++;
}
return len;
}
static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
{
unsigned int iobase;
unsigned char buf[31];
int i, len;
if (!info) {
printk(KERN_WARNING "bluecard_cs: Call of receive for unknown device.\n");
return;
}
iobase = info->link.io.BasePort1;
if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
bluecard_enable_activity_led(info);
len = bluecard_read(iobase, offset, buf, sizeof(buf));
for (i = 0; i < len; i++) {
/* 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 "bluecard_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 = buf[i];
switch (info->rx_skb->pkt_type) {
case 0x00:
/* init packet */
if (offset != 0x00) {
set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
set_bit(XMIT_SENDING_READY, &(info->tx_state));
bluecard_write_wakeup(info);
}
kfree_skb(info->rx_skb);
info->rx_skb = NULL;
break;
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 "bluecard_cs: Unknown HCI packet with type 0x%02x received.\n", info->rx_skb->pkt_type);
info->hdev.stat.err_rx++;
kfree_skb(info->rx_skb);
info->rx_skb = NULL;
break;
}
} else {
*skb_put(info->rx_skb, 1) = buf[i];
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;
}
}
}
}
info->hdev.stat.byte_rx += len;
}
void bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
{
bluecard_info_t *info = dev_inst;
unsigned int iobase;
unsigned char reg;
if (!info) {
printk(KERN_WARNING "bluecard_cs: Call of irq %d for unknown device.\n", irq);
return;
}
if (!test_bit(CARD_READY, &(info->hw_state)))
return;
iobase = info->link.io.BasePort1;
spin_lock(&(info->lock));
/* Disable interrupt */
info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
outb(info->ctrl_reg, iobase + REG_CONTROL);
reg = inb(iobase + REG_INTERRUPT);
if ((reg != 0x00) && (reg != 0xff)) {
if (reg & 0x04) {
bluecard_receive(info, 0x00);
outb(0x04, iobase + REG_INTERRUPT);
outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
}
if (reg & 0x08) {
bluecard_receive(info, 0x10);
outb(0x08, iobase + REG_INTERRUPT);
outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
}
if (reg & 0x01) {
set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
outb(0x01, iobase + REG_INTERRUPT);
bluecard_write_wakeup(info);
}
if (reg & 0x02) {
set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
outb(0x02, iobase + REG_INTERRUPT);
bluecard_write_wakeup(info);
}
}
/* Enable interrupt */
info->ctrl_reg |= REG_CONTROL_INTERRUPT;
outb(info->ctrl_reg, iobase + REG_CONTROL);
spin_unlock(&(info->lock));
}
/* ======================== Device specific HCI commands ======================== */
static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
{
bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
struct sk_buff *skb;
/* Ericsson baud rate command */
unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
if (!(skb = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
printk(KERN_WARNING "bluecard_cs: Can't allocate mem for new packet.\n");
return -1;
}
switch (baud) {
case 460800:
cmd[4] = 0x00;
skb->pkt_type = PKT_BAUD_RATE_460800;
break;
case 230400:
cmd[4] = 0x01;
skb->pkt_type = PKT_BAUD_RATE_230400;
break;
case 115200:
cmd[4] = 0x02;
skb->pkt_type = PKT_BAUD_RATE_115200;
break;
case 57600:
/* Fall through... */
default:
cmd[4] = 0x03;
skb->pkt_type = PKT_BAUD_RATE_57600;
break;
}
memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
skb_queue_tail(&(info->txq), skb);
bluecard_write_wakeup(info);
return 0;
}
/* ======================== HCI interface ======================== */
static int bluecard_hci_flush(struct hci_dev *hdev)
{
bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
/* Drop TX queue */
skb_queue_purge(&(info->txq));
return 0;
}
static int bluecard_hci_open(struct hci_dev *hdev)
{
bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
unsigned int iobase = info->link.io.BasePort1;
bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
return 0;
/* Enable LED */
outb(0x08 | 0x20, iobase + 0x30);
return 0;
}
static int bluecard_hci_close(struct hci_dev *hdev)
{
bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
unsigned int iobase = info->link.io.BasePort1;
if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
return 0;
bluecard_hci_flush(hdev);
/* Disable LED */
outb(0x00, iobase + 0x30);
return 0;
}
static int bluecard_hci_send_frame(struct sk_buff *skb)
{
bluecard_info_t *info;
struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
if (!hdev) {
printk(KERN_WARNING "bluecard_cs: Frame for unknown HCI device (hdev=NULL).");
return -ENODEV;
}
info = (bluecard_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);
bluecard_write_wakeup(info);
return 0;
}
static void bluecard_hci_destruct(struct hci_dev *hdev)
{
}
static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
{
return -ENOIOCTLCMD;
}
/* ======================== Card services HCI interaction ======================== */
int bluecard_open(bluecard_info_t *info)
{
unsigned int iobase = info->link.io.BasePort1;
struct hci_dev *hdev;
unsigned char id;
spin_lock_init(&(info->lock));
init_timer(&(info->timer));
info->timer.function = &bluecard_activity_led_timeout;
info->timer.data = (u_long)info;
skb_queue_head_init(&(info->txq));
info->rx_state = RECV_WAIT_PACKET_TYPE;
info->rx_count = 0;
info->rx_skb = NULL;
id = inb(iobase + 0x30);
if ((id & 0x0f) == 0x02)
set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
if (id & 0x10)
set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
if (id & 0x20)
set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
/* Reset card */
info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
outb(info->ctrl_reg, iobase + REG_CONTROL);
/* Turn FPGA off */
outb(0x80, iobase + 0x30);
/* Wait some time */
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ / 100);
/* Turn FPGA on */
outb(0x00, iobase + 0x30);
/* Activate card */
info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
outb(info->ctrl_reg, iobase + REG_CONTROL);
/* Enable interrupt */
outb(0xff, iobase + REG_INTERRUPT);
info->ctrl_reg |= REG_CONTROL_INTERRUPT;
outb(info->ctrl_reg, iobase + REG_CONTROL);
/* Start the RX buffers */
outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
/* Signal that the hardware is ready */
set_bit(CARD_READY, &(info->hw_state));
/* Drop TX queue */
skb_queue_purge(&(info->txq));
/* Control the point at which RTS is enabled */
outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
/* Timeout before it is safe to send the first HCI packet */
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout((HZ * 5) / 4); // or set it to 3/2
/* Initialize and register HCI device */
hdev = &(info->hdev);
hdev->type = HCI_PCCARD;
hdev->driver_data = info;
hdev->open = bluecard_hci_open;
hdev->close = bluecard_hci_close;
hdev->flush = bluecard_hci_flush;
hdev->send = bluecard_hci_send_frame;
hdev->destruct = bluecard_hci_destruct;
hdev->ioctl = bluecard_hci_ioctl;
if (hci_register_dev(hdev) < 0) {
printk(KERN_WARNING "bluecard_cs: Can't register HCI device %s.\n", hdev->name);
return -ENODEV;
}
return 0;
}
int bluecard_close(bluecard_info_t *info)
{
unsigned int iobase = info->link.io.BasePort1;
struct hci_dev *hdev = &(info->hdev);
if (info->link.state & DEV_CONFIG_PENDING)
return -ENODEV;
bluecard_hci_close(hdev);
clear_bit(CARD_READY, &(info->hw_state));
/* Reset card */
info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
outb(info->ctrl_reg, iobase + REG_CONTROL);
/* Turn FPGA off */
outb(0x80, iobase + 0x30);
if (hci_unregister_dev(hdev) < 0)
printk(KERN_WARNING "bluecard_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 *bluecard_attach(void)
{
bluecard_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 = &bluecard_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 = bluecard_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 = &bluecard_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);
bluecard_detach(link);
return NULL;
}
return link;
}
void bluecard_detach(dev_link_t *link)
{
bluecard_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)
bluecard_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 bluecard_config(dev_link_t *link)
{
client_handle_t handle = link->handle;
bluecard_info_t *info = link->priv;
tuple_t tuple;
u_short buf[256];
cisparse_t parse;
config_info_t config;
int i, n, 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;
link->conf.ConfigIndex = 0x20;
link->io.NumPorts1 = 64;
link->io.IOAddrLines = 6;
for (n = 0; n < 0x400; n += 0x40) {
link->io.BasePort1 = n ^ 0x300;
i = CardServices(RequestIO, link->handle, &link->io);
if (i == CS_SUCCESS)
break;
}
if (i != CS_SUCCESS) {
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 (bluecard_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:
bluecard_release((u_long)link);
}
void bluecard_release(u_long arg)
{
dev_link_t *link = (dev_link_t *)arg;
bluecard_info_t *info = link->priv;
if (link->state & DEV_PRESENT)
bluecard_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 bluecard_event(event_t event, int priority, event_callback_args_t *args)
{
dev_link_t *link = args->client_data;
bluecard_info_t *info = link->priv;
switch (event) {
case CS_EVENT_CARD_REMOVAL:
link->state &= ~DEV_PRESENT;
if (link->state & DEV_CONFIG) {
bluecard_close(info);
mod_timer(&link->release, jiffies + HZ / 20);
}
break;
case CS_EVENT_CARD_INSERTION:
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
bluecard_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_bluecard_cs(void)
{
servinfo_t serv;
int err;
CardServices(GetCardServicesInfo, &serv);
if (serv.Revision != CS_RELEASE_CODE) {
printk(KERN_NOTICE "bluecard_cs: Card Services release does not match!\n");
return -1;
}
err = register_pccard_driver(&dev_info, &bluecard_attach, &bluecard_detach);
return err;
}
void __exit exit_bluecard_cs(void)
{
unregister_pccard_driver(&dev_info);
while (dev_list != NULL)
bluecard_detach(dev_list);
}
module_init(init_bluecard_cs);
module_exit(exit_bluecard_cs);
EXPORT_NO_SYMBOLS;