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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [bluetooth/] [bluecard_cs.c] - Blame information for rev 1774

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/*
 *
 *  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);
 
        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;
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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [bluetooth/] [bluecard_cs.c] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`*`
3			`* Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)`
4			`*`
5			`* Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>`
6			`*`
7			`*`
8			`* This program is free software; you can redistribute it and/or modify`
9			`* it under the terms of the GNU General Public License version 2 as`
10			`* published by the Free Software Foundation;`
11			`*`
12			`* Software distributed under the License is distributed on an "AS`
13			`* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or`
14			`* implied. See the License for the specific language governing`
15			`* rights and limitations under the License.`
16			`*`
17			`* The initial developer of the original code is David A. Hinds`
18			`* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds`
19			`* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.`
20			`*`
21			`*/`
22
23			`#include <linux/config.h>`
24			`#include <linux/module.h>`
25
26			`#include <linux/kernel.h>`
27			`#include <linux/init.h>`
28			`#include <linux/slab.h>`
29			`#include <linux/types.h>`
30			`#include <linux/sched.h>`
31			`#include <linux/timer.h>`
32			`#include <linux/errno.h>`
33			`#include <linux/ptrace.h>`
34			`#include <linux/ioport.h>`
35			`#include <linux/spinlock.h>`
36			`#include <linux/skbuff.h>`
37			`#include <asm/io.h>`
38
39			`#include <pcmcia/version.h>`
40			`#include <pcmcia/cs_types.h>`