static void bluecard_receive(struct bluecard_info *info,
unsigned int offset)
{
unsigned int iobase;
unsigned char buf[31];
int i, len;
if (!info) {
BT_ERR("Unknown device");
return;
}
iobase = info->p_dev->resource[0]->start;
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;
info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
if (!info->rx_skb) {
BT_ERR("Can't allocate mem for new packet");
return;
}
}
if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
bt_cb(info->rx_skb)->pkt_type = buf[i];
switch (bt_cb(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 */
BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(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;
struct hci_event_hdr *eh;
struct hci_acl_hdr *ah;
struct hci_sco_hdr *sh;
switch (info->rx_state) {
case RECV_WAIT_EVENT_HEADER:
eh = hci_event_hdr(info->rx_skb);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = eh->plen;
break;
case RECV_WAIT_ACL_HEADER:
ah = hci_acl_hdr(info->rx_skb);
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);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = sh->dlen;
break;
case RECV_WAIT_DATA:
hci_recv_frame(info->hdev, info->rx_skb);
info->rx_skb = NULL;
break;
}
}
}
}
info->hdev->stat.byte_rx += 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;
}
static void bluecard_write_wakeup(struct bluecard_info *info)
{
if (!info) {
BT_ERR("Unknown device");
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 {
unsigned int iobase = info->p_dev->resource[0]->start;
unsigned int offset;
unsigned char command;
unsigned long ready_bit;
register struct sk_buff *skb;
int len;
clear_bit(XMIT_WAKEUP, &(info->tx_state));
if (!pcmcia_dev_present(info->p_dev))
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;
}
skb = skb_dequeue(&(info->txq));
if (!skb)
break;
if (bt_cb(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 (bt_cb(skb)->pkt_type & 0x80) {
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
DEFINE_WAIT(wait);
unsigned char baud_reg;
switch (bt_cb(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 */
prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
schedule_timeout(HZ/10);
finish_wait(&wq, &wait);
/* 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 */
prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
schedule_timeout(HZ);
finish_wait(&wq, &wait);
}
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 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));
}
