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OpenCloudOS-Kernel/drivers/net/wireless/libertas/if_usb.c

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/**
* This file contains functions used in USB interface module.
*/
#include <linux/delay.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include <linux/netdevice.h>
#include <linux/list.h>
#include <linux/usb.h>
#define DRV_NAME "usb8xxx"
#include "host.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "if_usb.h"
#define MESSAGE_HEADER_LEN 4
static const char usbdriver_name[] = "usb8xxx";
static u8 *default_fw_name = "usb8388.bin";
char *libertas_fw_name = NULL;
module_param_named(fw_name, libertas_fw_name, charp, 0644);
/*
* We need to send a RESET command to all USB devices before
* we tear down the USB connection. Otherwise we would not
* be able to re-init device the device if the module gets
* loaded again. This is a list of all initialized USB devices,
* for the reset code see if_usb_reset_device()
*/
static LIST_HEAD(usb_devices);
static struct usb_device_id if_usb_table[] = {
/* Enter the device signature inside */
{ USB_DEVICE(0x1286, 0x2001) },
{ USB_DEVICE(0x05a3, 0x8388) },
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, if_usb_table);
static void if_usb_receive(struct urb *urb);
static void if_usb_receive_fwload(struct urb *urb);
static int if_usb_reset_device(wlan_private *priv);
static int if_usb_register_dev(wlan_private * priv);
static int if_usb_unregister_dev(wlan_private *);
static int if_usb_prog_firmware(wlan_private *);
static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb);
static int if_usb_get_int_status(wlan_private * priv, u8 *);
static int if_usb_read_event_cause(wlan_private *);
/**
* @brief call back function to handle the status of the URB
* @param urb pointer to urb structure
* @return N/A
*/
static void if_usb_write_bulk_callback(struct urb *urb)
{
wlan_private *priv = (wlan_private *) (urb->context);
wlan_adapter *adapter = priv->adapter;
struct net_device *dev = priv->dev;
/* handle the transmission complete validations */
if (urb->status != 0) {
/* print the failure status number for debug */
lbs_pr_info("URB in failure status: %d\n", urb->status);
} else {
/*
lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
urb->actual_length);
*/
priv->dnld_sent = DNLD_RES_RECEIVED;
/* Wake main thread if commands are pending */
if (!adapter->cur_cmd)
wake_up_interruptible(&priv->mainthread.waitq);
if ((adapter->connect_status == libertas_connected)) {
netif_wake_queue(dev);
netif_wake_queue(priv->mesh_dev);
}
}
return;
}
/**
* @brief free tx/rx urb, skb and rx buffer
* @param cardp pointer usb_card_rec
* @return N/A
*/
void if_usb_free(struct usb_card_rec *cardp)
{
lbs_deb_enter(LBS_DEB_USB);
/* Unlink tx & rx urb */
usb_kill_urb(cardp->tx_urb);
usb_kill_urb(cardp->rx_urb);
usb_free_urb(cardp->tx_urb);
cardp->tx_urb = NULL;
usb_free_urb(cardp->rx_urb);
cardp->rx_urb = NULL;
kfree(cardp->bulk_out_buffer);
cardp->bulk_out_buffer = NULL;
lbs_deb_leave(LBS_DEB_USB);
}
/**
* @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;
}
/**
* @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;
}
/**
* @brief This function download FW
* @param priv pointer to wlan_private
* @return 0
*/
static int if_prog_firmware(wlan_private * priv)
{
struct usb_card_rec *cardp = priv->card;
struct FWData *fwdata;
struct fwheader *fwheader;
u8 *firmware = priv->firmware->data;
fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
if (!fwdata)
return -1;
fwheader = &fwdata->fwheader;
if (!cardp->CRC_OK) {
cardp->totalbytes = cardp->fwlastblksent;
cardp->fwseqnum = cardp->lastseqnum - 1;
}
/*
lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
cardp->totalbytes);
*/
memcpy(fwheader, &firmware[cardp->totalbytes],
sizeof(struct fwheader));
cardp->fwlastblksent = cardp->totalbytes;
cardp->totalbytes += sizeof(struct fwheader);
/* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
memcpy(fwdata->data, &firmware[cardp->totalbytes],
le32_to_cpu(fwdata->fwheader.datalength));
/*
lbs_deb_usbd(&cardp->udev->dev,
"Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
*/
cardp->fwseqnum = cardp->fwseqnum + 1;
fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
cardp->lastseqnum = cardp->fwseqnum;
cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
/*
lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
lbs_deb_usbd(&cardp->udev->dev,
"seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
cardp->totalbytes);
*/
memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
} else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
/*
lbs_deb_usbd(&cardp->udev->dev,
"Host has finished FW downloading\n");
lbs_deb_usbd(&cardp->udev->dev,
"Donwloading FW JUMP BLOCK\n");
*/
memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
cardp->fwfinalblk = 1;
}
/*
lbs_deb_usbd(&cardp->udev->dev,
"The firmware download is done size is %d\n",
cardp->totalbytes);
*/
kfree(fwdata);
return 0;
}
static int libertas_do_reset(wlan_private *priv)
{
int ret;
struct usb_card_rec *cardp = priv->card;
lbs_deb_enter(LBS_DEB_USB);
ret = usb_reset_device(cardp->udev);
if (!ret) {
msleep(10);
if_usb_reset_device(priv);
msleep(10);
}
lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
return ret;
}
/**
* @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;
}
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 inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
{
return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
}
static inline int if_usb_submit_rx_urb(wlan_private * priv)
{
return __if_usb_submit_rx_urb(priv, &if_usb_receive);
}
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;
}
#define MRVDRV_MIN_PKT_LEN 30
static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
struct usb_card_rec *cardp,
wlan_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);
libertas_process_rxed_packet(priv, skb);
priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
}
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 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);
}
/**
* @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;
}
/* 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 int if_usb_read_event_cause(wlan_private * priv)
{
struct usb_card_rec *cardp = priv->card;
priv->adapter->eventcause = cardp->usb_event_cause;
/* Re-submit rx urb here to avoid event lost issue */
if_usb_submit_rx_urb(priv);
return 0;
}
static int if_usb_reset_device(wlan_private *priv)
{
int ret;
lbs_deb_enter(LBS_DEB_USB);
ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
cmd_act_halt, 0, 0, NULL);
msleep_interruptible(10);
lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
return ret;
}
static int if_usb_unregister_dev(wlan_private * priv)
{
int ret = 0;
/* Need to send a Reset command to device before USB resources freed
* and wlan_remove_card() called, then device can handle FW download
* again.
*/
if (priv)
if_usb_reset_device(priv);
return ret;
}
/**
* @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 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;
}
#ifdef CONFIG_PM
static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usb_card_rec *cardp = usb_get_intfdata(intf);
wlan_private *priv = cardp->priv;
lbs_deb_enter(LBS_DEB_USB);
if (priv->adapter->psstate != PS_STATE_FULL_POWER)
return -1;
netif_device_detach(cardp->eth_dev);
netif_device_detach(priv->mesh_dev);
/* Unlink tx & rx urb */
usb_kill_urb(cardp->tx_urb);
usb_kill_urb(cardp->rx_urb);
cardp->rx_urb_recall = 1;
lbs_deb_leave(LBS_DEB_USB);
return 0;
}
static int if_usb_resume(struct usb_interface *intf)
{
struct usb_card_rec *cardp = usb_get_intfdata(intf);
wlan_private *priv = cardp->priv;
lbs_deb_enter(LBS_DEB_USB);
cardp->rx_urb_recall = 0;
if_usb_submit_rx_urb(cardp->priv);
netif_device_attach(cardp->eth_dev);
netif_device_attach(priv->mesh_dev);
lbs_deb_leave(LBS_DEB_USB);
return 0;
}
#else
#define if_usb_suspend NULL
#define if_usb_resume NULL
#endif
static struct usb_driver if_usb_driver = {
/* driver name */
.name = usbdriver_name,
/* probe function name */
.probe = if_usb_probe,
/* disconnect function name */
.disconnect = if_usb_disconnect,
/* device signature table */
.id_table = if_usb_table,
.suspend = if_usb_suspend,
.resume = if_usb_resume,
};
static int if_usb_init_module(void)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_MAIN);
if (libertas_fw_name == NULL) {
libertas_fw_name = default_fw_name;
}
ret = usb_register(&if_usb_driver);
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
static void if_usb_exit_module(void)
{
struct usb_card_rec *cardp, *cardp_temp;
lbs_deb_enter(LBS_DEB_MAIN);
list_for_each_entry_safe(cardp, cardp_temp, &usb_devices, list)
if_usb_reset_device((wlan_private *) cardp->priv);
/* API unregisters the driver from USB subsystem */
usb_deregister(&if_usb_driver);
lbs_deb_leave(LBS_DEB_MAIN);
}
module_init(if_usb_init_module);
module_exit(if_usb_exit_module);
MODULE_DESCRIPTION("8388 USB WLAN Driver");
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_LICENSE("GPL");
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