/**
* @brief This function downloads data to FW
* @param priv pointer to wlan_private structure
* @param type type of data
* @param buf pointer to data buffer
* @param len number of bytes
* @return 0 or -1
*/
static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
{
int ret = -1;
u32 tmp;
struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
if (type == MVMS_CMD) {
tmp = cpu_to_le32(CMD_TYPE_REQUEST);
priv->dnld_sent = DNLD_CMD_SENT;
memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
MESSAGE_HEADER_LEN);
} else {
tmp = cpu_to_le32(CMD_TYPE_DATA);
priv->dnld_sent = DNLD_DATA_SENT;
memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
MESSAGE_HEADER_LEN);
}
memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
ret =
usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
return ret;
}
/**
* @brief This function transfer the data to the device.
* @param priv pointer to struct lbs_private
* @param payload pointer to payload data
* @param nb data length
* @return 0 or -1
*/
static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, uint16_t nb)
{
int ret = -1;
/* check if device is removed */
if (cardp->surprise_removed) {
lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
goto tx_ret;
}
usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
usb_sndbulkpipe(cardp->udev,
cardp->ep_out),
payload, nb, if_usb_write_bulk_callback, cardp);
cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
ret = -1;
} else {
lbs_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
ret = 0;
}
tx_ret:
return ret;
}
static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
struct sk_buff *skb,
struct if_usb_card *cardp,
struct lbs_private *priv)
{
u8 i;
if (recvlength > LBS_CMD_BUFFER_SIZE) {
lbs_deb_usbd(&cardp->udev->dev,
"The receive buffer is too large\n");
kfree_skb(skb);
return;
}
if (!in_interrupt())
BUG();
spin_lock(&priv->driver_lock);
i = (priv->resp_idx == 0) ? 1 : 0;
BUG_ON(priv->resp_len[i]);
priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN);
memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN,
priv->resp_len[i]);
kfree_skb(skb);
lbs_notify_command_response(priv, i);
spin_unlock(&priv->driver_lock);
lbs_deb_usbd(&cardp->udev->dev,
"Wake up main thread to handle cmd response\n");
}
/**
* @brief This function transfer the data to the device.
* @param priv pointer to wlan_private
* @param payload pointer to payload data
* @param nb data length
* @return 0 or -1
*/
int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
{
/* pointer to card structure */
struct usb_card_rec *cardp = priv->card;
int ret = -1;
/* check if device is removed */
if (priv->adapter->surpriseremoved) {
lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
goto tx_ret;
}
usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
usb_sndbulkpipe(cardp->udev,
cardp->bulk_out_endpointAddr),
payload, nb, if_usb_write_bulk_callback, priv);
cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
/* transfer failed */
lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
ret = -1;
} else {
/* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
ret = 0;
}
tx_ret:
return ret;
}
/**
* @brief This function reads of the packet into the upload buff,
* wake up the main thread and initialise the Rx callack.
*
* @param urb pointer to struct urb
* @return N/A
*/
static void if_usb_receive(struct urb *urb)
{
struct if_usb_card *cardp = urb->context;
struct sk_buff *skb = cardp->rx_skb;
struct lbs_private *priv = cardp->priv;
int recvlength = urb->actual_length;
uint8_t *recvbuff = NULL;
uint32_t recvtype = 0;
__le32 *pkt = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
uint32_t event;
lbs_deb_enter(LBS_DEB_USB);
if (recvlength) {
if (urb->status) {
lbs_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
urb->status);
kfree_skb(skb);
goto setup_for_next;
}
recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
recvtype = le32_to_cpu(pkt[0]);
lbs_deb_usbd(&cardp->udev->dev,
"Recv length = 0x%x, Recv type = 0x%X\n",
recvlength, recvtype);
} else if (urb->status) {
kfree_skb(skb);
goto rx_exit;
}
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 handling */
event = le32_to_cpu(pkt[1]);
lbs_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", event);
kfree_skb(skb);
/* Icky undocumented magic special case */
if (event & 0xffff0000) {
u32 trycount = (event & 0xffff0000) >> 16;
lbs_send_tx_feedback(priv, trycount);
} else
/**
* @brief free resource and cleanup
* @param intf USB interface structure
* @return N/A
*/
static void if_usb_disconnect(struct usb_interface *intf)
{
struct usb_card_rec *cardp = usb_get_intfdata(intf);
wlan_private *priv = (wlan_private *) cardp->priv;
wlan_adapter *adapter = NULL;
adapter = priv->adapter;
/*
* Update Surprise removed to TRUE
*/
adapter->surpriseremoved = 1;
list_del(&cardp->list);
/* card is removed and we can call wlan_remove_card */
lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
libertas_remove_mesh(priv);
libertas_remove_card(priv);
/* Unlink and free urb */
if_usb_free(cardp);
usb_set_intfdata(intf, NULL);
usb_put_dev(interface_to_usbdev(intf));
return;
}
/* called with adapter->driver_lock held */
static int if_usb_get_int_status(wlan_private * priv, u8 * ireg)
{
struct usb_card_rec *cardp = priv->card;
*ireg = cardp->usb_int_cause;
cardp->usb_int_cause = 0;
lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
return 0;
}
static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
struct sk_buff *skb,
struct usb_card_rec *cardp,
wlan_private *priv)
{
u8 *cmdbuf;
if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
lbs_deb_usbd(&cardp->udev->dev,
"The receive buffer is too large\n");
kfree_skb(skb);
return;
}
if (!in_interrupt())
BUG();
spin_lock(&priv->adapter->driver_lock);
/* take care of cur_cmd = NULL case by reading the
* data to clear the interrupt */
if (!priv->adapter->cur_cmd) {
cmdbuf = priv->upld_buf;
priv->adapter->hisregcpy &= ~his_cmdupldrdy;
} else
cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
cardp->usb_int_cause |= his_cmdupldrdy;
priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
priv->upld_len);
kfree_skb(skb);
libertas_interrupt(priv->dev);
spin_unlock(&priv->adapter->driver_lock);
lbs_deb_usbd(&cardp->udev->dev,
"Wake up main thread to handle cmd response\n");
return;
}
/**
* @brief This function register usb device and initialize parameter
* @param priv pointer to wlan_private
* @return 0 or -1
*/
static int if_usb_register_dev(wlan_private * priv)
{
struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
lbs_deb_enter(LBS_DEB_USB);
cardp->priv = priv;
cardp->eth_dev = priv->dev;
priv->hotplug_device = &(cardp->udev->dev);
lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
cardp->udev);
lbs_deb_leave(LBS_DEB_USB);
return 0;
}
static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
struct if_usb_card *cardp,
struct lbs_private *priv)
{
if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
|| recvlength < MRVDRV_MIN_PKT_LEN) {
lbs_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
kfree_skb(skb);
return;
}
skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
skb_put(skb, recvlength);
skb_pull(skb, MESSAGE_HEADER_LEN);
lbs_process_rxed_packet(priv, skb);
}
static int __if_usb_submit_rx_urb(wlan_private * priv,
void (*callbackfn)
(struct urb *urb))
{
struct usb_card_rec *cardp = priv->card;
struct sk_buff *skb;
struct read_cb_info *rinfo = &cardp->rinfo;
int ret = -1;
if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
lbs_pr_err("No free skb\n");
goto rx_ret;
}
rinfo->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->bulk_in_endpointAddr),
(void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
rinfo);
cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
/* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
/* handle failure conditions */
lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
ret = -1;
} else {
/* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
ret = 0;
}
rx_ret:
return ret;
}
static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
void (*callbackfn)(struct urb *urb))
{
struct sk_buff *skb;
int ret = -1;
if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
lbs_pr_err("No free skb\n");
goto rx_ret;
}
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),
(void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
cardp);
cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
lbs_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb);
if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
kfree_skb(skb);
cardp->rx_skb = NULL;
ret = -1;
} else {
lbs_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
ret = 0;
}
rx_ret:
return ret;
}
/**
* @brief sets the configuration values
* @param ifnum interface number
* @param id pointer to usb_device_id
* @return 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;
wlan_private *priv;
struct usb_card_rec *cardp;
int i;
udev = interface_to_usbdev(intf);
cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
if (!cardp) {
lbs_pr_err("Out of memory allocating private data.\n");
goto error;
}
cardp->udev = udev;
iface_desc = intf->cur_altsetting;
lbs_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 ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
&& ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_BULK)) {
/* we found a bulk in endpoint */
lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
le16_to_cpu(endpoint->wMaxPacketSize));
if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev,
"Rx URB allocation failed\n");
goto dealloc;
}
cardp->rx_urb_recall = 0;
cardp->bulk_in_size =
le16_to_cpu(endpoint->wMaxPacketSize);
cardp->bulk_in_endpointAddr =
(endpoint->
bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
endpoint->bEndpointAddress);
}
if (((endpoint->
bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
USB_DIR_OUT)
&& ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_BULK)) {
/* We found bulk out endpoint */
if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev,
"Tx URB allocation failed\n");
goto dealloc;
}
cardp->bulk_out_size =
le16_to_cpu(endpoint->wMaxPacketSize);
lbs_deb_usbd(&udev->dev,
"Bulk out size is %d\n",
le16_to_cpu(endpoint->wMaxPacketSize));
cardp->bulk_out_endpointAddr =
endpoint->bEndpointAddress;
lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
endpoint->bEndpointAddress);
cardp->bulk_out_buffer =
kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
GFP_KERNEL);
if (!cardp->bulk_out_buffer) {
lbs_deb_usbd(&udev->dev,
"Could not allocate buffer\n");
goto dealloc;
}
}
}
if (!(priv = libertas_add_card(cardp, &udev->dev)))
goto dealloc;
if (libertas_add_mesh(priv, &udev->dev))
goto err_add_mesh;
priv->hw_register_dev = if_usb_register_dev;
priv->hw_unregister_dev = if_usb_unregister_dev;
priv->hw_prog_firmware = if_usb_prog_firmware;
priv->hw_host_to_card = if_usb_host_to_card;
priv->hw_get_int_status = if_usb_get_int_status;
priv->hw_read_event_cause = if_usb_read_event_cause;
if (libertas_activate_card(priv, libertas_fw_name))
goto err_activate_card;
list_add_tail(&cardp->list, &usb_devices);
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
return 0;
err_activate_card:
libertas_remove_mesh(priv);
err_add_mesh:
free_netdev(priv->dev);
kfree(priv->adapter);
dealloc:
if_usb_free(cardp);
error:
return -ENOMEM;
}
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 bootcmdresp;
if (urb->status) {
lbs_deb_usbd(&cardp->udev->dev,
"URB status is failed during fw load\n");
kfree_skb(skb);
return;
}
if (cardp->fwdnldover) {
__le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
lbs_pr_info("Firmware ready event received\n");
wake_up(&cardp->fw_wq);
} else {
lbs_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);
return;
}
if (cardp->bootcmdresp <= 0) {
memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
sizeof(bootcmdresp));
if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(cardp);
cardp->bootcmdresp = 1;
lbs_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
return;
}
if (bootcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
if (bootcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
bootcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
bootcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
if (!cardp->bootcmdresp)
lbs_pr_info("Firmware already seems alive; resetting\n");
cardp->bootcmdresp = -1;
} else {
lbs_pr_info("boot cmd response wrong magic number (0x%x)\n",
le32_to_cpu(bootcmdresp.magic));
}
} else if (bootcmdresp.cmd != BOOT_CMD_FW_BY_USB) {
lbs_pr_info("boot cmd response cmd_tag error (%d)\n",
bootcmdresp.cmd);
} else if (bootcmdresp.result != BOOT_CMD_RESP_OK) {
lbs_pr_info("boot cmd response result error (%d)\n",
bootcmdresp.result);
} else {
cardp->bootcmdresp = 1;
lbs_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
}
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(cardp);
return;
}
syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
if (!syncfwheader) {
lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
kfree_skb(skb);
return;
}
memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
sizeof(struct fwsyncheader));
if (!syncfwheader->cmd) {
lbs_deb_usb2(&cardp->udev->dev, "FW received Blk with correct CRC\n");
lbs_deb_usb2(&cardp->udev->dev, "FW received Blk seqnum = %d\n",
le32_to_cpu(syncfwheader->seqnum));
cardp->CRC_OK = 1;
} else {
lbs_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);
return;
}
static void if_usb_receive_fwload(struct urb *urb)
{
struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
wlan_private *priv = rinfo->priv;
struct sk_buff *skb = rinfo->skb;
struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
struct fwsyncheader *syncfwheader;
struct bootcmdrespStr bootcmdresp;
if (urb->status) {
lbs_deb_usbd(&cardp->udev->dev,
"URB status is failed during fw load\n");
kfree_skb(skb);
return;
}
if (cardp->bootcmdresp == 0) {
memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
sizeof(bootcmdresp));
if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(priv);
cardp->bootcmdresp = 1;
lbs_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
return;
}
if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
lbs_pr_info(
"boot cmd response wrong magic number (0x%x)\n",
le32_to_cpu(bootcmdresp.u32magicnumber));
} else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
lbs_pr_info(
"boot cmd response cmd_tag error (%d)\n",
bootcmdresp.u8cmd_tag);
} else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
lbs_pr_info(
"boot cmd response result error (%d)\n",
bootcmdresp.u8result);
} else {
cardp->bootcmdresp = 1;
lbs_deb_usbd(&cardp->udev->dev,
"Received valid boot command response\n");
}
kfree_skb(skb);
if_usb_submit_rx_urb_fwload(priv);
return;
}
syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
if (!syncfwheader) {
lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
kfree_skb(skb);
return;
}
memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
sizeof(struct fwsyncheader));
if (!syncfwheader->cmd) {
/*
lbs_deb_usbd(&cardp->udev->dev,
"FW received Blk with correct CRC\n");
lbs_deb_usbd(&cardp->udev->dev,
"FW received Blk seqnum = %d\n",
syncfwheader->seqnum);
*/
cardp->CRC_OK = 1;
} else {
lbs_deb_usbd(&cardp->udev->dev,
"FW received Blk with CRC error\n");
cardp->CRC_OK = 0;
}
kfree_skb(skb);
if (cardp->fwfinalblk) {
cardp->fwdnldover = 1;
goto exit;
}
if_prog_firmware(priv);
if_usb_submit_rx_urb_fwload(priv);
exit:
kfree(syncfwheader);
return;
}
/**
* @brief sets the configuration values
* @param ifnum interface number
* @param id pointer to usb_device_id
* @return 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 lbs_private *priv;
struct if_usb_card *cardp;
int i;
udev = interface_to_usbdev(intf);
cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
if (!cardp) {
lbs_pr_err("Out of memory allocating private data.\n");
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;
lbs_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);
lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in);
lbs_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);
lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out);
lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", cardp->ep_out_size);
}
}
if (!cardp->ep_out_size || !cardp->ep_in_size) {
lbs_deb_usbd(&udev->dev, "Endpoints not found\n");
goto dealloc;
}
if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
goto dealloc;
}
if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
goto dealloc;
}
cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL);
if (!cardp->ep_out_buf) {
lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n");
goto dealloc;
}
/* Upload firmware */
if (if_usb_prog_firmware(cardp)) {
lbs_deb_usbd(&udev->dev, "FW upload failed\n");
goto err_prog_firmware;
}
if (!(priv = lbs_add_card(cardp, &udev->dev)))
goto err_prog_firmware;
cardp->priv = priv;
cardp->priv->fw_ready = 1;
priv->hw_host_to_card = if_usb_host_to_card;
#ifdef CONFIG_OLPC
if (machine_is_olpc())
priv->reset_card = if_usb_reset_olpc_card;
#endif
cardp->boot2_version = udev->descriptor.bcdDevice;
if_usb_submit_rx_urb(cardp);
if (lbs_start_card(priv))
goto err_start_card;
if_usb_setup_firmware(priv);
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
return 0;
err_start_card:
lbs_remove_card(priv);
err_prog_firmware:
if_usb_reset_device(cardp);
dealloc:
if_usb_free(cardp);
error:
return -ENOMEM;
}
/**
* if_usb_probe - sets the configuration values
* @intf: &usb_interface pointer
* @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 lbs_private *priv;
struct if_usb_card *cardp;
int i;
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;
cardp->model = (uint32_t) id->driver_info;
iface_desc = intf->cur_altsetting;
lbs_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);
lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in);
lbs_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);
lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out);
lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", cardp->ep_out_size);
}
}
if (!cardp->ep_out_size || !cardp->ep_in_size) {
lbs_deb_usbd(&udev->dev, "Endpoints not found\n");
goto dealloc;
}
if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
goto dealloc;
}
if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
goto dealloc;
}
cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL);
if (!cardp->ep_out_buf) {
lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n");
goto dealloc;
}
/* Upload firmware */
kparam_block_sysfs_write(fw_name);
if (__if_usb_prog_firmware(cardp, lbs_fw_name, BOOT_CMD_FW_BY_USB)) {
kparam_unblock_sysfs_write(fw_name);
lbs_deb_usbd(&udev->dev, "FW upload failed\n");
goto err_prog_firmware;
}
kparam_unblock_sysfs_write(fw_name);
if (!(priv = lbs_add_card(cardp, &intf->dev)))
goto err_prog_firmware;
cardp->priv = priv;
cardp->priv->fw_ready = 1;
priv->hw_host_to_card = if_usb_host_to_card;
priv->enter_deep_sleep = NULL;
priv->exit_deep_sleep = NULL;
priv->reset_deep_sleep_wakeup = NULL;
#ifdef CONFIG_OLPC
if (machine_is_olpc())
priv->reset_card = if_usb_reset_olpc_card;
#endif
cardp->boot2_version = udev->descriptor.bcdDevice;
if_usb_submit_rx_urb(cardp);
if (lbs_start_card(priv))
goto err_start_card;
if_usb_setup_firmware(priv);
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
if (device_create_file(&priv->dev->dev, &dev_attr_lbs_flash_fw))
netdev_err(priv->dev,
"cannot register lbs_flash_fw attribute\n");
if (device_create_file(&priv->dev->dev, &dev_attr_lbs_flash_boot2))
netdev_err(priv->dev,
"cannot register lbs_flash_boot2 attribute\n");
/*
* EHS_REMOVE_WAKEUP is not supported on all versions of the firmware.
*/
priv->wol_criteria = EHS_REMOVE_WAKEUP;
if (lbs_host_sleep_cfg(priv, priv->wol_criteria, NULL))
priv->ehs_remove_supported = false;
return 0;
err_start_card:
lbs_remove_card(priv);
err_prog_firmware:
if_usb_reset_device(cardp);
dealloc:
if_usb_free(cardp);
error:
return -ENOMEM;
}
static int if_usb_prog_firmware(wlan_private * priv)
{
struct usb_card_rec *cardp = priv->card;
int i = 0;
static int reset_count = 10;
int ret = 0;
lbs_deb_enter(LBS_DEB_USB);
cardp->rinfo.priv = priv;
restart:
if (if_usb_submit_rx_urb_fwload(priv) < 0) {
lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
ret = -1;
goto done;
}
cardp->bootcmdresp = 0;
do {
int j = 0;
i++;
/* Issue Boot command = 1, Boot from Download-FW */
if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
/* wait for command response */
do {
j++;
msleep_interruptible(100);
} while (cardp->bootcmdresp == 0 && j < 10);
} while (cardp->bootcmdresp == 0 && i < 5);
if (cardp->bootcmdresp == 0) {
if (--reset_count >= 0) {
libertas_do_reset(priv);
goto restart;
}
return -1;
}
i = 0;
priv->adapter->fw_ready = 0;
cardp->totalbytes = 0;
cardp->fwlastblksent = 0;
cardp->CRC_OK = 1;
cardp->fwdnldover = 0;
cardp->fwseqnum = -1;
cardp->totalbytes = 0;
cardp->fwfinalblk = 0;
if_prog_firmware(priv);
do {
lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
i++;
msleep_interruptible(100);
if (priv->adapter->surpriseremoved || i >= 20)
break;
} while (!cardp->fwdnldover);
if (!cardp->fwdnldover) {
lbs_pr_info("failed to load fw, resetting device!\n");
if (--reset_count >= 0) {
libertas_do_reset(priv);
goto restart;
}
lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
ret = -1;
goto done;
}
if_usb_submit_rx_urb(priv);
/* Delay 200 ms to waiting for the FW ready */
msleep_interruptible(200);
priv->adapter->fw_ready = 1;
done:
lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
return ret;
}
/**
* @brief This function reads of the packet into the upload buff,
* wake up the main thread and initialise the Rx callack.
*
* @param urb pointer to struct urb
* @return N/A
*/
static void if_usb_receive(struct urb *urb)
{
struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
wlan_private *priv = rinfo->priv;
struct sk_buff *skb = rinfo->skb;
struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
int recvlength = urb->actual_length;
u8 *recvbuff = NULL;
u32 recvtype;
lbs_deb_enter(LBS_DEB_USB);
if (recvlength) {
if (urb->status) {
lbs_deb_usbd(&cardp->udev->dev,
"URB status is failed\n");
kfree_skb(skb);
goto setup_for_next;
}
recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
memcpy(&recvtype, recvbuff, sizeof(u32));
lbs_deb_usbd(&cardp->udev->dev,
"Recv length = 0x%x\n", recvlength);
lbs_deb_usbd(&cardp->udev->dev,
"Receive type = 0x%X\n", recvtype);
recvtype = le32_to_cpu(recvtype);
lbs_deb_usbd(&cardp->udev->dev,
"Receive type after = 0x%X\n", recvtype);
} else if (urb->status)
goto rx_exit;
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 */
spin_lock(&priv->adapter->driver_lock);
cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
cardp->usb_event_cause);
if (cardp->usb_event_cause & 0xffff0000) {
libertas_send_tx_feedback(priv);
spin_unlock(&priv->adapter->driver_lock);
break;
}
cardp->usb_event_cause <<= 3;
cardp->usb_int_cause |= his_cardevent;
kfree_skb(skb);
libertas_interrupt(priv->dev);
spin_unlock(&priv->adapter->driver_lock);
goto rx_exit;
default:
kfree_skb(skb);
break;
}
setup_for_next:
if_usb_submit_rx_urb(priv);
rx_exit:
lbs_deb_leave(LBS_DEB_USB);
}