mirror of https://gitee.com/openkylin/linux.git
688 lines
14 KiB
C
688 lines
14 KiB
C
/*
|
|
*
|
|
* A driver for Nokia Connectivity Card DTL-1 devices
|
|
*
|
|
* 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/module.h>
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/types.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/moduleparam.h>
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/string.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_reg.h>
|
|
#include <linux/bitops.h>
|
|
#include <asm/system.h>
|
|
#include <asm/io.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 ======================== */
|
|
|
|
|
|
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
|
|
MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
/* ======================== Local structures ======================== */
|
|
|
|
|
|
typedef struct dtl1_info_t {
|
|
struct pcmcia_device *p_dev;
|
|
dev_node_t node;
|
|
|
|
struct hci_dev *hdev;
|
|
|
|
spinlock_t lock; /* For serializing operations */
|
|
|
|
unsigned long flowmask; /* HCI flow mask */
|
|
int ri_latch;
|
|
|
|
struct sk_buff_head txq;
|
|
unsigned long tx_state;
|
|
|
|
unsigned long rx_state;
|
|
unsigned long rx_count;
|
|
struct sk_buff *rx_skb;
|
|
} dtl1_info_t;
|
|
|
|
|
|
static int dtl1_config(struct pcmcia_device *link);
|
|
static void dtl1_release(struct pcmcia_device *link);
|
|
|
|
static void dtl1_detach(struct pcmcia_device *p_dev);
|
|
|
|
|
|
/* Transmit states */
|
|
#define XMIT_SENDING 1
|
|
#define XMIT_WAKEUP 2
|
|
#define XMIT_WAITING 8
|
|
|
|
/* Receiver States */
|
|
#define RECV_WAIT_NSH 0
|
|
#define RECV_WAIT_DATA 1
|
|
|
|
|
|
typedef struct {
|
|
u8 type;
|
|
u8 zero;
|
|
u16 len;
|
|
} __attribute__ ((packed)) nsh_t; /* Nokia Specific Header */
|
|
|
|
#define NSHL 4 /* Nokia Specific Header Length */
|
|
|
|
|
|
|
|
/* ======================== Interrupt handling ======================== */
|
|
|
|
|
|
static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
|
|
{
|
|
int actual = 0;
|
|
|
|
/* Tx FIFO should be empty */
|
|
if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
|
|
return 0;
|
|
|
|
/* Fill FIFO with current frame */
|
|
while ((fifo_size-- > 0) && (actual < len)) {
|
|
/* Transmit next byte */
|
|
outb(buf[actual], iobase + UART_TX);
|
|
actual++;
|
|
}
|
|
|
|
return actual;
|
|
}
|
|
|
|
|
|
static void dtl1_write_wakeup(dtl1_info_t *info)
|
|
{
|
|
if (!info) {
|
|
BT_ERR("Unknown device");
|
|
return;
|
|
}
|
|
|
|
if (test_bit(XMIT_WAITING, &(info->tx_state))) {
|
|
set_bit(XMIT_WAKEUP, &(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->p_dev->io.BasePort1;
|
|
register struct sk_buff *skb;
|
|
register int len;
|
|
|
|
clear_bit(XMIT_WAKEUP, &(info->tx_state));
|
|
|
|
if (!pcmcia_dev_present(info->p_dev))
|
|
return;
|
|
|
|
if (!(skb = skb_dequeue(&(info->txq))))
|
|
break;
|
|
|
|
/* Send frame */
|
|
len = dtl1_write(iobase, 32, skb->data, skb->len);
|
|
|
|
if (len == skb->len) {
|
|
set_bit(XMIT_WAITING, &(info->tx_state));
|
|
kfree_skb(skb);
|
|
} else {
|
|
skb_pull(skb, len);
|
|
skb_queue_head(&(info->txq), skb);
|
|
}
|
|
|
|
info->hdev->stat.byte_tx += len;
|
|
|
|
} while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
|
|
|
|
clear_bit(XMIT_SENDING, &(info->tx_state));
|
|
}
|
|
|
|
|
|
static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
|
|
{
|
|
u8 flowmask = *(u8 *)skb->data;
|
|
int i;
|
|
|
|
printk(KERN_INFO "Bluetooth: Nokia control data =");
|
|
for (i = 0; i < skb->len; i++) {
|
|
printk(" %02x", skb->data[i]);
|
|
}
|
|
printk("\n");
|
|
|
|
/* transition to active state */
|
|
if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
|
|
clear_bit(XMIT_WAITING, &(info->tx_state));
|
|
dtl1_write_wakeup(info);
|
|
}
|
|
|
|
info->flowmask = flowmask;
|
|
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
|
|
static void dtl1_receive(dtl1_info_t *info)
|
|
{
|
|
unsigned int iobase;
|
|
nsh_t *nsh;
|
|
int boguscount = 0;
|
|
|
|
if (!info) {
|
|
BT_ERR("Unknown device");
|
|
return;
|
|
}
|
|
|
|
iobase = info->p_dev->io.BasePort1;
|
|
|
|
do {
|
|
info->hdev->stat.byte_rx++;
|
|
|
|
/* Allocate packet */
|
|
if (info->rx_skb == NULL)
|
|
if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
|
|
BT_ERR("Can't allocate mem for new packet");
|
|
info->rx_state = RECV_WAIT_NSH;
|
|
info->rx_count = NSHL;
|
|
return;
|
|
}
|
|
|
|
*skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
|
|
nsh = (nsh_t *)info->rx_skb->data;
|
|
|
|
info->rx_count--;
|
|
|
|
if (info->rx_count == 0) {
|
|
|
|
switch (info->rx_state) {
|
|
case RECV_WAIT_NSH:
|
|
info->rx_state = RECV_WAIT_DATA;
|
|
info->rx_count = nsh->len + (nsh->len & 0x0001);
|
|
break;
|
|
case RECV_WAIT_DATA:
|
|
bt_cb(info->rx_skb)->pkt_type = nsh->type;
|
|
|
|
/* remove PAD byte if it exists */
|
|
if (nsh->len & 0x0001) {
|
|
info->rx_skb->tail--;
|
|
info->rx_skb->len--;
|
|
}
|
|
|
|
/* remove NSH */
|
|
skb_pull(info->rx_skb, NSHL);
|
|
|
|
switch (bt_cb(info->rx_skb)->pkt_type) {
|
|
case 0x80:
|
|
/* control data for the Nokia Card */
|
|
dtl1_control(info, info->rx_skb);
|
|
break;
|
|
case 0x82:
|
|
case 0x83:
|
|
case 0x84:
|
|
/* send frame to the HCI layer */
|
|
info->rx_skb->dev = (void *) info->hdev;
|
|
bt_cb(info->rx_skb)->pkt_type &= 0x0f;
|
|
hci_recv_frame(info->rx_skb);
|
|
break;
|
|
default:
|
|
/* unknown packet */
|
|
BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
|
|
kfree_skb(info->rx_skb);
|
|
break;
|
|
}
|
|
|
|
info->rx_state = RECV_WAIT_NSH;
|
|
info->rx_count = NSHL;
|
|
info->rx_skb = NULL;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
/* Make sure we don't stay here too long */
|
|
if (boguscount++ > 32)
|
|
break;
|
|
|
|
} while (inb(iobase + UART_LSR) & UART_LSR_DR);
|
|
}
|
|
|
|
|
|
static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
|
|
{
|
|
dtl1_info_t *info = dev_inst;
|
|
unsigned int iobase;
|
|
unsigned char msr;
|
|
int boguscount = 0;
|
|
int iir, lsr;
|
|
irqreturn_t r = IRQ_NONE;
|
|
|
|
if (!info || !info->hdev)
|
|
/* our irq handler is shared */
|
|
return IRQ_NONE;
|
|
|
|
iobase = info->p_dev->io.BasePort1;
|
|
|
|
spin_lock(&(info->lock));
|
|
|
|
iir = inb(iobase + UART_IIR) & UART_IIR_ID;
|
|
while (iir) {
|
|
|
|
r = IRQ_HANDLED;
|
|
/* Clear interrupt */
|
|
lsr = inb(iobase + UART_LSR);
|
|
|
|
switch (iir) {
|
|
case UART_IIR_RLSI:
|
|
BT_ERR("RLSI");
|
|
break;
|
|
case UART_IIR_RDI:
|
|
/* Receive interrupt */
|
|
dtl1_receive(info);
|
|
break;
|
|
case UART_IIR_THRI:
|
|
if (lsr & UART_LSR_THRE) {
|
|
/* Transmitter ready for data */
|
|
dtl1_write_wakeup(info);
|
|
}
|
|
break;
|
|
default:
|
|
BT_ERR("Unhandled IIR=%#x", iir);
|
|
break;
|
|
}
|
|
|
|
/* Make sure we don't stay here too long */
|
|
if (boguscount++ > 100)
|
|
break;
|
|
|
|
iir = inb(iobase + UART_IIR) & UART_IIR_ID;
|
|
|
|
}
|
|
|
|
msr = inb(iobase + UART_MSR);
|
|
|
|
if (info->ri_latch ^ (msr & UART_MSR_RI)) {
|
|
info->ri_latch = msr & UART_MSR_RI;
|
|
clear_bit(XMIT_WAITING, &(info->tx_state));
|
|
dtl1_write_wakeup(info);
|
|
r = IRQ_HANDLED;
|
|
}
|
|
|
|
spin_unlock(&(info->lock));
|
|
|
|
return r;
|
|
}
|
|
|
|
|
|
|
|
/* ======================== HCI interface ======================== */
|
|
|
|
|
|
static int dtl1_hci_open(struct hci_dev *hdev)
|
|
{
|
|
set_bit(HCI_RUNNING, &(hdev->flags));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int dtl1_hci_flush(struct hci_dev *hdev)
|
|
{
|
|
dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
|
|
|
|
/* Drop TX queue */
|
|
skb_queue_purge(&(info->txq));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int dtl1_hci_close(struct hci_dev *hdev)
|
|
{
|
|
if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
|
|
return 0;
|
|
|
|
dtl1_hci_flush(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int dtl1_hci_send_frame(struct sk_buff *skb)
|
|
{
|
|
dtl1_info_t *info;
|
|
struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
|
|
struct sk_buff *s;
|
|
nsh_t nsh;
|
|
|
|
if (!hdev) {
|
|
BT_ERR("Frame for unknown HCI device (hdev=NULL)");
|
|
return -ENODEV;
|
|
}
|
|
|
|
info = (dtl1_info_t *)(hdev->driver_data);
|
|
|
|
switch (bt_cb(skb)->pkt_type) {
|
|
case HCI_COMMAND_PKT:
|
|
hdev->stat.cmd_tx++;
|
|
nsh.type = 0x81;
|
|
break;
|
|
case HCI_ACLDATA_PKT:
|
|
hdev->stat.acl_tx++;
|
|
nsh.type = 0x82;
|
|
break;
|
|
case HCI_SCODATA_PKT:
|
|
hdev->stat.sco_tx++;
|
|
nsh.type = 0x83;
|
|
break;
|
|
default:
|
|
return -EILSEQ;
|
|
};
|
|
|
|
nsh.zero = 0;
|
|
nsh.len = skb->len;
|
|
|
|
s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
|
|
if (!s)
|
|
return -ENOMEM;
|
|
|
|
skb_reserve(s, NSHL);
|
|
skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len);
|
|
if (skb->len & 0x0001)
|
|
*skb_put(s, 1) = 0; /* PAD */
|
|
|
|
/* Prepend skb with Nokia frame header and queue */
|
|
memcpy(skb_push(s, NSHL), &nsh, NSHL);
|
|
skb_queue_tail(&(info->txq), s);
|
|
|
|
dtl1_write_wakeup(info);
|
|
|
|
kfree_skb(skb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void dtl1_hci_destruct(struct hci_dev *hdev)
|
|
{
|
|
}
|
|
|
|
|
|
static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
|
|
{
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
|
|
|
|
/* ======================== Card services HCI interaction ======================== */
|
|
|
|
|
|
static int dtl1_open(dtl1_info_t *info)
|
|
{
|
|
unsigned long flags;
|
|
unsigned int iobase = info->p_dev->io.BasePort1;
|
|
struct hci_dev *hdev;
|
|
|
|
spin_lock_init(&(info->lock));
|
|
|
|
skb_queue_head_init(&(info->txq));
|
|
|
|
info->rx_state = RECV_WAIT_NSH;
|
|
info->rx_count = NSHL;
|
|
info->rx_skb = NULL;
|
|
|
|
set_bit(XMIT_WAITING, &(info->tx_state));
|
|
|
|
/* Initialize HCI device */
|
|
hdev = hci_alloc_dev();
|
|
if (!hdev) {
|
|
BT_ERR("Can't allocate HCI device");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->hdev = hdev;
|
|
|
|
hdev->type = HCI_PCCARD;
|
|
hdev->driver_data = info;
|
|
SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
|
|
|
|
hdev->open = dtl1_hci_open;
|
|
hdev->close = dtl1_hci_close;
|
|
hdev->flush = dtl1_hci_flush;
|
|
hdev->send = dtl1_hci_send_frame;
|
|
hdev->destruct = dtl1_hci_destruct;
|
|
hdev->ioctl = dtl1_hci_ioctl;
|
|
|
|
hdev->owner = THIS_MODULE;
|
|
|
|
spin_lock_irqsave(&(info->lock), flags);
|
|
|
|
/* Reset UART */
|
|
outb(0, iobase + UART_MCR);
|
|
|
|
/* Turn off interrupts */
|
|
outb(0, iobase + UART_IER);
|
|
|
|
/* Initialize UART */
|
|
outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */
|
|
outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
|
|
|
|
info->ri_latch = inb(info->p_dev->io.BasePort1 + UART_MSR) & UART_MSR_RI;
|
|
|
|
/* Turn on interrupts */
|
|
outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
|
|
|
|
spin_unlock_irqrestore(&(info->lock), flags);
|
|
|
|
/* Timeout before it is safe to send the first HCI packet */
|
|
msleep(2000);
|
|
|
|
/* Register HCI device */
|
|
if (hci_register_dev(hdev) < 0) {
|
|
BT_ERR("Can't register HCI device");
|
|
info->hdev = NULL;
|
|
hci_free_dev(hdev);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int dtl1_close(dtl1_info_t *info)
|
|
{
|
|
unsigned long flags;
|
|
unsigned int iobase = info->p_dev->io.BasePort1;
|
|
struct hci_dev *hdev = info->hdev;
|
|
|
|
if (!hdev)
|
|
return -ENODEV;
|
|
|
|
dtl1_hci_close(hdev);
|
|
|
|
spin_lock_irqsave(&(info->lock), flags);
|
|
|
|
/* Reset UART */
|
|
outb(0, iobase + UART_MCR);
|
|
|
|
/* Turn off interrupts */
|
|
outb(0, iobase + UART_IER);
|
|
|
|
spin_unlock_irqrestore(&(info->lock), flags);
|
|
|
|
if (hci_unregister_dev(hdev) < 0)
|
|
BT_ERR("Can't unregister HCI device %s", hdev->name);
|
|
|
|
hci_free_dev(hdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dtl1_probe(struct pcmcia_device *link)
|
|
{
|
|
dtl1_info_t *info;
|
|
|
|
/* Create new info device */
|
|
info = kzalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->p_dev = link;
|
|
link->priv = info;
|
|
|
|
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
|
|
link->io.NumPorts1 = 8;
|
|
link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
|
|
|
|
link->irq.Handler = dtl1_interrupt;
|
|
|
|
link->conf.Attributes = CONF_ENABLE_IRQ;
|
|
link->conf.IntType = INT_MEMORY_AND_IO;
|
|
|
|
return dtl1_config(link);
|
|
}
|
|
|
|
|
|
static void dtl1_detach(struct pcmcia_device *link)
|
|
{
|
|
dtl1_info_t *info = link->priv;
|
|
|
|
dtl1_release(link);
|
|
|
|
kfree(info);
|
|
}
|
|
|
|
static int dtl1_confcheck(struct pcmcia_device *p_dev,
|
|
cistpl_cftable_entry_t *cf,
|
|
cistpl_cftable_entry_t *dflt,
|
|
unsigned int vcc,
|
|
void *priv_data)
|
|
{
|
|
if ((cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
|
|
p_dev->io.BasePort1 = cf->io.win[0].base;
|
|
p_dev->io.NumPorts1 = cf->io.win[0].len; /*yo */
|
|
p_dev->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
|
|
if (!pcmcia_request_io(p_dev, &p_dev->io))
|
|
return 0;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int dtl1_config(struct pcmcia_device *link)
|
|
{
|
|
dtl1_info_t *info = link->priv;
|
|
int i;
|
|
|
|
/* Look for a generic full-sized window */
|
|
link->io.NumPorts1 = 8;
|
|
if (pcmcia_loop_config(link, dtl1_confcheck, NULL) < 0)
|
|
goto failed;
|
|
|
|
i = pcmcia_request_irq(link, &link->irq);
|
|
if (i != 0)
|
|
link->irq.AssignedIRQ = 0;
|
|
|
|
i = pcmcia_request_configuration(link, &link->conf);
|
|
if (i != 0)
|
|
goto failed;
|
|
|
|
if (dtl1_open(info) != 0)
|
|
goto failed;
|
|
|
|
strcpy(info->node.dev_name, info->hdev->name);
|
|
link->dev_node = &info->node;
|
|
|
|
return 0;
|
|
|
|
failed:
|
|
dtl1_release(link);
|
|
return -ENODEV;
|
|
}
|
|
|
|
|
|
static void dtl1_release(struct pcmcia_device *link)
|
|
{
|
|
dtl1_info_t *info = link->priv;
|
|
|
|
dtl1_close(info);
|
|
|
|
pcmcia_disable_device(link);
|
|
}
|
|
|
|
|
|
static struct pcmcia_device_id dtl1_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
|
|
PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-4", 0xe1bfdd64, 0x9102bc82),
|
|
PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
|
|
PCMCIA_DEVICE_PROD_ID12("Socket", "CF+ Personal Network Card", 0xb38bcc2e, 0xe732bae3),
|
|
PCMCIA_DEVICE_NULL
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);
|
|
|
|
static struct pcmcia_driver dtl1_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "dtl1_cs",
|
|
},
|
|
.probe = dtl1_probe,
|
|
.remove = dtl1_detach,
|
|
.id_table = dtl1_ids,
|
|
};
|
|
|
|
static int __init init_dtl1_cs(void)
|
|
{
|
|
return pcmcia_register_driver(&dtl1_driver);
|
|
}
|
|
|
|
|
|
static void __exit exit_dtl1_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&dtl1_driver);
|
|
}
|
|
|
|
module_init(init_dtl1_cs);
|
|
module_exit(exit_dtl1_cs);
|