/**
* if_usb_receive_hw_spec - read data received from the device.
*
* @urb pointer to struct urb
*/
static void if_usb_receive_cmd_response(struct urb *urb)
{
struct if_usb_card *cardp = urb->context;
struct sk_buff *skb = cardp->rx_skb;
int recvlength = urb->actual_length;
uint8_t *recvbuff = NULL;
uint32_t recvtype = 0;
__le32 *pkt = (__le32 *)(skb->data);
struct cmd_ds_get_hw_spec *cmd;
lbtf_deb_enter(LBTF_DEB_USB);
if (recvlength>0) {
if (urb->status) {
lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
urb->status);
kfree_skb(skb);
goto setup_for_next;
}
recvbuff = skb->data;
recvtype = le32_to_cpu(pkt[0]);
lbtf_deb_usb("Recv length = 0x%x, Recv type = 0x%X",
recvlength, recvtype);
lbtf_deb_hex(LBTF_DEB_CMD, "CMD Data ", recvbuff, min_t(unsigned int, recvlength, 100));
} else if (urb->status) {
/**
* usb_tx_block - transfer data to the device
*
* @priv pointer to struct lbtf_private
* @payload pointer to payload data
* @nb data length
* @data non-zero for data, zero for commands
*
* Returns: 0 on success, nonzero otherwise.
*/
static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
uint16_t nb, u8 data)
{
int ret = -1;
struct urb *urb;
lbtf_deb_enter(LBTF_DEB_USB);
/* check if device is removed */
if (cardp->priv->surpriseremoved) {
lbtf_deb_usbd(&cardp->udev->dev, "Device removed\n");
goto tx_ret;
}
if (data)
urb = cardp->tx_urb;
else
urb = cardp->cmd_urb;
usb_fill_bulk_urb(urb, cardp->udev,
usb_sndbulkpipe(cardp->udev,
cardp->ep_out),
payload, nb, if_usb_write_bulk_callback, cardp);
urb->transfer_flags |= URB_ZERO_PACKET;
if (usb_submit_urb(urb, GFP_ATOMIC)) {
lbtf_deb_usbd(&cardp->udev->dev,
"usb_submit_urb failed: %d\n", ret);
goto tx_ret;
}
lbtf_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
ret = 0;
tx_ret:
lbtf_deb_leave(LBTF_DEB_USB);
return ret;
}
static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
struct if_usb_card *cardp,
struct lbtf_private *priv)
{
if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
|| recvlength < MRVDRV_MIN_PKT_LEN) {
lbtf_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
kfree_skb(skb);
return;
}
skb_put(skb, recvlength);
skb_pull(skb, MESSAGE_HEADER_LEN);
lbtf_rx(priv, skb);
}
static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
void (*callbackfn)(struct urb *urb))
{
struct sk_buff *skb;
int ret = -1;
lbtf_deb_enter(LBTF_DEB_USB);
skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
if (!skb) {
pr_err("No free skb\n");
lbtf_deb_leave(LBTF_DEB_USB);
return -1;
}
cardp->rx_skb = skb;
/* Fill the receive configuration URB and initialise the Rx call back */
usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
skb_tail_pointer(skb),
MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
lbtf_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n",
cardp->rx_urb);
ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC);
if (ret) {
lbtf_deb_usbd(&cardp->udev->dev,
"Submit Rx URB failed: %d\n", ret);
kfree_skb(skb);
cardp->rx_skb = NULL;
lbtf_deb_leave(LBTF_DEB_USB);
return -1;
} else {
lbtf_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
lbtf_deb_leave(LBTF_DEB_USB);
return 0;
}
}
static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
struct sk_buff *skb,
struct if_usb_card *cardp,
struct lbtf_private *priv)
{
if (recvlength > LBS_CMD_BUFFER_SIZE) {
lbtf_deb_usbd(&cardp->udev->dev,
"The receive buffer is too large\n");
kfree_skb(skb);
return;
}
BUG_ON(!in_interrupt());
spin_lock(&priv->driver_lock);
memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
recvlength - MESSAGE_HEADER_LEN);
kfree_skb(skb);
lbtf_cmd_response_rx(priv);
spin_unlock(&priv->driver_lock);
}
/**
* if_usb_receive - read data received from the device.
*
* @urb pointer to struct urb
*/
static void if_usb_receive(struct urb *urb)
{
struct if_usb_card *cardp = urb->context;
struct sk_buff *skb = cardp->rx_skb;
struct lbtf_private *priv = cardp->priv;
int recvlength = urb->actual_length;
uint8_t *recvbuff = NULL;
uint32_t recvtype = 0;
__le32 *pkt = (__le32 *) skb->data;
lbtf_deb_enter(LBTF_DEB_USB);
if (recvlength) {
if (urb->status) {
lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
urb->status);
kfree_skb(skb);
goto setup_for_next;
}
recvbuff = skb->data;
recvtype = le32_to_cpu(pkt[0]);
lbtf_deb_usbd(&cardp->udev->dev,
"Recv length = 0x%x, Recv type = 0x%X\n",
recvlength, recvtype);
} else if (urb->status) {
kfree_skb(skb);
lbtf_deb_leave(LBTF_DEB_USB);
return;
}
switch (recvtype) {
case CMD_TYPE_DATA:
process_cmdtypedata(recvlength, skb, cardp, priv);
break;
case CMD_TYPE_REQUEST:
process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
break;
case CMD_TYPE_INDICATION:
{
/* Event cause handling */
u32 event_cause = le32_to_cpu(pkt[1]);
lbtf_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n",
event_cause);
/* Icky undocumented magic special case */
if (event_cause & 0xffff0000) {
u16 tmp;
u8 retrycnt;
u8 failure;
tmp = event_cause >> 16;
retrycnt = tmp & 0x00ff;
failure = (tmp & 0xff00) >> 8;
lbtf_send_tx_feedback(priv, retrycnt, failure);
} else if (event_cause == LBTF_EVENT_BCN_SENT)
lbtf_bcn_sent(priv);
else
lbtf_deb_usbd(&cardp->udev->dev,
"Unsupported notification %d received\n",
event_cause);
kfree_skb(skb);
break;
}
static void if_usb_receive_fwload(struct urb *urb)
{
struct if_usb_card *cardp = urb->context;
struct sk_buff *skb = cardp->rx_skb;
struct fwsyncheader *syncfwheader;
struct bootcmdresp bcmdresp;
lbtf_deb_enter(LBTF_DEB_USB);
if (urb->status) {
lbtf_deb_usbd(&cardp->udev->dev,
"URB status is failed during fw load\n");
kfree_skb(skb);
lbtf_deb_leave(LBTF_DEB_USB);
return;
}
if (cardp->fwdnldover) {
__le32 *tmp = (__le32 *)(skb->data);
if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
/* Firmware ready event received */
pr_info("Firmware ready event received\n");
wake_up(&cardp->fw_wq);
} else {
lbtf_deb_usb("Waiting for confirmation; got %x %x\n",
le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
if_usb_submit_rx_urb_fwload(cardp);
}
kfree_skb(skb);
lbtf_deb_leave(LBTF_DEB_USB);
return;
}
if (cardp->bootcmdresp <= 0) {
memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(cardp);
cardp->bootcmdresp = 1;
/* Received valid boot command response */
lbtf_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
lbtf_deb_leave(LBTF_DEB_USB);
return;
}
if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
if (!cardp->bootcmdresp)
pr_info("Firmware already seems alive; resetting\n");
cardp->bootcmdresp = -1;
} else {
pr_info("boot cmd response wrong magic number (0x%x)\n",
le32_to_cpu(bcmdresp.magic));
}
} else if (bcmdresp.cmd != BOOT_CMD_FW_BY_USB) {
pr_info("boot cmd response cmd_tag error (%d)\n",
bcmdresp.cmd);
} else if (bcmdresp.result != BOOT_CMD_RESP_OK) {
pr_info("boot cmd response result error (%d)\n",
bcmdresp.result);
} else {
cardp->bootcmdresp = 1;
lbtf_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
}
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(cardp);
lbtf_deb_leave(LBTF_DEB_USB);
return;
}
syncfwheader = kmemdup(skb->data, sizeof(struct fwsyncheader),
GFP_ATOMIC);
if (!syncfwheader) {
lbtf_deb_usbd(&cardp->udev->dev,
"Failure to allocate syncfwheader\n");
kfree_skb(skb);
lbtf_deb_leave(LBTF_DEB_USB);
return;
}
if (!syncfwheader->cmd) {
lbtf_deb_usb2(&cardp->udev->dev,
"FW received Blk with correct CRC\n");
lbtf_deb_usb2(&cardp->udev->dev,
"FW received Blk seqnum = %d\n",
le32_to_cpu(syncfwheader->seqnum));
cardp->CRC_OK = 1;
} else {
lbtf_deb_usbd(&cardp->udev->dev,
"FW received Blk with CRC error\n");
cardp->CRC_OK = 0;
}
kfree_skb(skb);
/* reschedule timer for 200ms hence */
mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
if (cardp->fwfinalblk) {
cardp->fwdnldover = 1;
goto exit;
}
if_usb_send_fw_pkt(cardp);
exit:
if_usb_submit_rx_urb_fwload(cardp);
kfree(syncfwheader);
lbtf_deb_leave(LBTF_DEB_USB);
}
/**
* if_usb_probe - sets the configuration values
*
* @ifnum interface number
* @id pointer to usb_device_id
*
* Returns: 0 on success, error code on failure
*/
static int if_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
struct lbtf_private *priv;
struct if_usb_card *cardp;
int i;
lbtf_deb_enter(LBTF_DEB_USB);
udev = interface_to_usbdev(intf);
cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
if (!cardp)
goto error;
setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
init_waitqueue_head(&cardp->fw_wq);
cardp->udev = udev;
iface_desc = intf->cur_altsetting;
lbtf_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
" bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
le16_to_cpu(udev->descriptor.bcdUSB),
udev->descriptor.bDeviceClass,
udev->descriptor.bDeviceSubClass,
udev->descriptor.bDeviceProtocol);
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
endpoint = &iface_desc->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(endpoint)) {
cardp->ep_in_size =
le16_to_cpu(endpoint->wMaxPacketSize);
cardp->ep_in = usb_endpoint_num(endpoint);
lbtf_deb_usbd(&udev->dev, "in_endpoint = %d\n",
cardp->ep_in);
lbtf_deb_usbd(&udev->dev, "Bulk in size is %d\n",
cardp->ep_in_size);
} else if (usb_endpoint_is_bulk_out(endpoint)) {
cardp->ep_out_size =
le16_to_cpu(endpoint->wMaxPacketSize);
cardp->ep_out = usb_endpoint_num(endpoint);
lbtf_deb_usbd(&udev->dev, "out_endpoint = %d\n",
cardp->ep_out);
lbtf_deb_usbd(&udev->dev, "Bulk out size is %d\n",
cardp->ep_out_size);
}
}
if (!cardp->ep_out_size || !cardp->ep_in_size) {
lbtf_deb_usbd(&udev->dev, "Endpoints not found\n");
/* Endpoints not found */
goto dealloc;
}
cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!cardp->rx_urb) {
lbtf_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
goto dealloc;
}
cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!cardp->tx_urb) {
lbtf_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
goto dealloc;
}
cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!cardp->cmd_urb) {
lbtf_deb_usbd(&udev->dev, "Cmd URB allocation failed\n");
goto dealloc;
}
cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
GFP_KERNEL);
if (!cardp->ep_out_buf) {
lbtf_deb_usbd(&udev->dev, "Could not allocate buffer\n");
goto dealloc;
}
priv = lbtf_add_card(cardp, &udev->dev);
if (!priv)
goto dealloc;
cardp->priv = priv;
priv->hw_host_to_card = if_usb_host_to_card;
priv->hw_prog_firmware = if_usb_prog_firmware;
priv->hw_reset_device = if_usb_reset_device;
cardp->boot2_version = udev->descriptor.bcdDevice;
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
return 0;
dealloc:
if_usb_free(cardp);
error:
lbtf_deb_leave(LBTF_DEB_MAIN);
return -ENOMEM;
}
