linux/drivers/net/wireless/libertas/if_usb.c
David Woodhouse 448a51ae06 libertas: switch lbs_cmd() to take a callback function pointer
All existing code which sends commands is set up to have some function
called with the results, not to get data back. It's more versatile this
way, and providing it with a callback function which involves memcpy()
is hardly difficult.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-28 15:06:16 -08:00

1044 lines
25 KiB
C

/**
* 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/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 char *lbs_fw_name = "usb8388.bin";
module_param_named(fw_name, lbs_fw_name, charp, 0644);
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_prog_firmware(struct usb_card_rec *cardp);
static int if_usb_host_to_card(struct lbs_private *priv,
u8 type,
u8 *payload,
u16 nb);
static int if_usb_get_int_status(struct lbs_private *priv, u8 *);
static int if_usb_read_event_cause(struct lbs_private *);
static int usb_tx_block(struct usb_card_rec *cardp, u8 *payload, u16 nb);
static void if_usb_free(struct usb_card_rec *cardp);
static int if_usb_submit_rx_urb(struct usb_card_rec *cardp);
static int if_usb_reset_device(struct usb_card_rec *cardp);
/**
* @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)
{
struct usb_card_rec *cardp = (struct usb_card_rec *) urb->context;
/* handle the transmission complete validations */
if (urb->status == 0) {
struct lbs_private *priv = cardp->priv;
/*
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);
*/
/* Used for both firmware TX and regular TX. priv isn't
* valid at firmware load time.
*/
if (priv)
lbs_host_to_card_done(priv);
} else {
/* print the failure status number for debug */
lbs_pr_info("URB in failure status: %d\n", urb->status);
}
return;
}
/**
* @brief free tx/rx urb, skb and rx buffer
* @param cardp pointer usb_card_rec
* @return N/A
*/
static 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);
}
static void if_usb_set_boot2_ver(struct lbs_private *priv)
{
struct cmd_ds_set_boot2_ver b2_cmd;
b2_cmd.action = 0;
b2_cmd.version = priv->boot2_version;
if (lbs_cmd(priv, CMD_SET_BOOT2_VER, &b2_cmd, sizeof(b2_cmd), NULL))
lbs_deb_usb("Setting boot2 version failed\n");
}
/**
* @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 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;
}
}
}
/* Upload firmware */
cardp->rinfo.cardp = cardp;
if (if_usb_prog_firmware(cardp)) {
lbs_deb_usbd(&udev->dev, "FW upload failed");
goto err_prog_firmware;
}
if (!(priv = lbs_add_card(cardp, &udev->dev)))
goto err_prog_firmware;
cardp->priv = priv;
if (lbs_add_mesh(priv, &udev->dev))
goto err_add_mesh;
cardp->eth_dev = priv->dev;
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;
priv->boot2_version = udev->descriptor.bcdDevice;
/* Delay 200 ms to waiting for the FW ready */
if_usb_submit_rx_urb(cardp);
msleep_interruptible(200);
priv->adapter->fw_ready = 1;
if (lbs_start_card(priv))
goto err_start_card;
if_usb_set_boot2_ver(priv);
usb_get_dev(udev);
usb_set_intfdata(intf, cardp);
return 0;
err_start_card:
lbs_remove_mesh(priv);
err_add_mesh:
lbs_remove_card(priv);
err_prog_firmware:
if_usb_reset_device(cardp);
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);
struct lbs_private *priv = (struct lbs_private *) cardp->priv;
lbs_deb_enter(LBS_DEB_MAIN);
/* Update Surprise removed to TRUE */
cardp->surprise_removed = 1;
if (priv) {
struct lbs_adapter *adapter = priv->adapter;
adapter->surpriseremoved = 1;
lbs_stop_card(priv);
lbs_remove_mesh(priv);
lbs_remove_card(priv);
}
/* this is (apparently?) necessary for future usage of the device */
lbs_prepare_and_send_command(priv, CMD_802_11_RESET, CMD_ACT_HALT,
0, 0, NULL);
/* Unlink and free urb */
if_usb_free(cardp);
usb_set_intfdata(intf, NULL);
usb_put_dev(interface_to_usbdev(intf));
lbs_deb_leave(LBS_DEB_MAIN);
}
/**
* @brief This function download FW
* @param priv pointer to struct lbs_private
* @return 0
*/
static int if_prog_firmware(struct usb_card_rec *cardp)
{
struct FWData *fwdata;
struct fwheader *fwheader;
u8 *firmware = cardp->fw->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(cardp, 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(cardp, 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 if_usb_reset_device(struct usb_card_rec *cardp)
{
int ret;
struct lbs_private *priv = cardp->priv;
lbs_deb_enter(LBS_DEB_USB);
/* Try a USB port reset first, if that fails send the reset
* command to the firmware.
*/
ret = usb_reset_device(cardp->udev);
if (!ret && priv) {
msleep(10);
ret = lbs_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 struct lbs_private
* @param payload pointer to payload data
* @param nb data length
* @return 0 or -1
*/
static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 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->bulk_out_endpointAddr),
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))) {
/* transfer failed */
lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
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(struct usb_card_rec *cardp,
void (*callbackfn)(struct urb *urb))
{
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: %d\n", ret);
kfree_skb(skb);
rinfo->skb = NULL;
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_fwload(struct usb_card_rec *cardp)
{
return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
}
static int if_usb_submit_rx_urb(struct usb_card_rec *cardp)
{
return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
}
static void if_usb_receive_fwload(struct urb *urb)
{
struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
struct sk_buff *skb = rinfo->skb;
struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp;
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(cardp);
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(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_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(cardp);
if_usb_submit_rx_urb_fwload(cardp);
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,
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);
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,
struct lbs_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 &= ~MRVDRV_CMD_UPLD_RDY;
} else
cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
priv->upld_len);
kfree_skb(skb);
lbs_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;
struct sk_buff *skb = rinfo->skb;
struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp;
struct lbs_private *priv = cardp->priv;
int recvlength = urb->actual_length;
u8 *recvbuff = NULL;
u32 recvtype = 0;
lbs_deb_enter(LBS_DEB_USB);
if (recvlength) {
__le32 tmp;
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(&tmp, recvbuff, sizeof(u32));
recvtype = le32_to_cpu(tmp);
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 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) {
lbs_send_tx_feedback(priv);
spin_unlock(&priv->adapter->driver_lock);
break;
}
cardp->usb_event_cause <<= 3;
cardp->usb_int_cause |= MRVDRV_CARDEVENT;
kfree_skb(skb);
lbs_interrupt(priv->dev);
spin_unlock(&priv->adapter->driver_lock);
goto rx_exit;
default:
lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
recvtype);
kfree_skb(skb);
break;
}
setup_for_next:
if_usb_submit_rx_urb(cardp);
rx_exit:
lbs_deb_leave(LBS_DEB_USB);
}
/**
* @brief This function downloads data to FW
* @param priv pointer to struct lbs_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(struct lbs_private *priv,
u8 type,
u8 *payload,
u16 nb)
{
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) {
__le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
priv->dnld_sent = DNLD_CMD_SENT;
memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
MESSAGE_HEADER_LEN);
} else {
__le32 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);
return usb_tx_block(cardp, cardp->bulk_out_buffer,
nb + MESSAGE_HEADER_LEN);
}
/* called with adapter->driver_lock held */
static int if_usb_get_int_status(struct lbs_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(struct lbs_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(cardp);
return 0;
}
/**
* @brief This function issues Boot command to the Boot2 code
* @param ivalue 1:Boot from FW by USB-Download
* 2:Boot from FW in EEPROM
* @return 0
*/
static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue)
{
struct bootcmdstr sbootcmd;
int i;
/* Prepare command */
sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
sbootcmd.u8cmd_tag = ivalue;
for (i=0; i<11; i++)
sbootcmd.au8dumy[i]=0x00;
memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
/* Issue command */
usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
return 0;
}
/**
* @brief This function checks the validity of Boot2/FW image.
*
* @param data pointer to image
* len image length
* @return 0 or -1
*/
static int check_fwfile_format(u8 *data, u32 totlen)
{
u32 bincmd, exit;
u32 blksize, offset, len;
int ret;
ret = 1;
exit = len = 0;
do {
struct fwheader *fwh = (void *)data;
bincmd = le32_to_cpu(fwh->dnldcmd);
blksize = le32_to_cpu(fwh->datalength);
switch (bincmd) {
case FW_HAS_DATA_TO_RECV:
offset = sizeof(struct fwheader) + blksize;
data += offset;
len += offset;
if (len >= totlen)
exit = 1;
break;
case FW_HAS_LAST_BLOCK:
exit = 1;
ret = 0;
break;
default:
exit = 1;
break;
}
} while (!exit);
if (ret)
lbs_pr_err("firmware file format check FAIL\n");
else
lbs_deb_fw("firmware file format check PASS\n");
return ret;
}
static int if_usb_prog_firmware(struct usb_card_rec *cardp)
{
int i = 0;
static int reset_count = 10;
int ret = 0;
lbs_deb_enter(LBS_DEB_USB);
if ((ret = request_firmware(&cardp->fw, lbs_fw_name,
&cardp->udev->dev)) < 0) {
lbs_pr_err("request_firmware() failed with %#x\n", ret);
lbs_pr_err("firmware %s not found\n", lbs_fw_name);
goto done;
}
if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
goto release_fw;
restart:
if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
ret = -1;
goto release_fw;
}
cardp->bootcmdresp = 0;
do {
int j = 0;
i++;
/* Issue Boot command = 1, Boot from Download-FW */
if_usb_issue_boot_command(cardp, 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) {
if_usb_reset_device(cardp);
goto restart;
}
return -1;
}
i = 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(cardp);
do {
lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
i++;
msleep_interruptible(100);
if (cardp->surprise_removed || i >= 20)
break;
} while (!cardp->fwdnldover);
if (!cardp->fwdnldover) {
lbs_pr_info("failed to load fw, resetting device!\n");
if (--reset_count >= 0) {
if_usb_reset_device(cardp);
goto restart;
}
lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
ret = -1;
goto release_fw;
}
release_fw:
release_firmware(cardp->fw);
cardp->fw = NULL;
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);
struct lbs_private *priv = cardp->priv;
lbs_deb_enter(LBS_DEB_USB);
if (priv->adapter->psstate != PS_STATE_FULL_POWER)
return -1;
if (priv->mesh_dev && !priv->mesh_autostart_enabled) {
/* Mesh autostart must be activated while sleeping
* On resume it will go back to the current state
*/
struct cmd_ds_mesh_access mesh_access;
memset(&mesh_access, 0, sizeof(mesh_access));
mesh_access.data[0] = cpu_to_le32(1);
lbs_prepare_and_send_command(priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
}
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);
struct lbs_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);
if (priv->mesh_dev && !priv->mesh_autostart_enabled) {
/* Mesh autostart was activated while sleeping
* Disable it if appropriate
*/
struct cmd_ds_mesh_access mesh_access;
memset(&mesh_access, 0, sizeof(mesh_access));
mesh_access.data[0] = cpu_to_le32(0);
lbs_prepare_and_send_command(priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
}
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 = {
.name = DRV_NAME,
.probe = if_usb_probe,
.disconnect = if_usb_disconnect,
.id_table = if_usb_table,
.suspend = if_usb_suspend,
.resume = if_usb_resume,
};
static int __init if_usb_init_module(void)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_MAIN);
ret = usb_register(&if_usb_driver);
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
static void __exit if_usb_exit_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
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");