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-rw-r--r--package/libertas/src/if_usb.c1043
1 files changed, 1043 insertions, 0 deletions
diff --git a/package/libertas/src/if_usb.c b/package/libertas/src/if_usb.c
new file mode 100644
index 0000000000..02192e8a15
--- /dev/null
+++ b/package/libertas/src/if_usb.c
@@ -0,0 +1,1043 @@
+/**
+ * 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 "cmd.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, NULL, 0))
+ lbs_deb_usb("Setting boot2 version failed\n");
+}
+
+static void if_usb_fw_timeo(unsigned long priv)
+{
+ struct usb_card_rec *cardp = (void *)priv;
+
+ if (cardp->fwdnldover) {
+ lbs_deb_usb("Download complete, no event. Assuming success\n");
+ } else {
+ lbs_pr_err("Download timed out\n");
+ cardp->surprise_removed = 1;
+ }
+ wake_up(&cardp->fw_wq);
+}
+/**
+ * @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;
+ }
+
+ 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 ((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->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;
+ cardp->priv->fw_ready = 1;
+
+ 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;
+
+ if_usb_submit_rx_urb(cardp);
+
+ 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_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) {
+
+ priv->surpriseremoved = 1;
+ lbs_stop_card(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_usb_send_fw_pkt(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)
+{
+ struct cmd_ds_command *cmd = (void *)&cardp->bulk_out_buffer[4];
+ int ret;
+
+ lbs_deb_enter(LBS_DEB_USB);
+
+ *(__le32 *)cardp->bulk_out_buffer = cpu_to_le32(CMD_TYPE_REQUEST);
+
+ cmd->command = cpu_to_le16(CMD_802_11_RESET);
+ cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset) + S_DS_GEN);
+ cmd->result = cpu_to_le16(0);
+ cmd->seqnum = cpu_to_le16(0x5a5a);
+ cmd->params.reset.action = cpu_to_le16(CMD_ACT_HALT);
+ usb_tx_block(cardp, cardp->bulk_out_buffer, 4 + S_DS_GEN + sizeof(struct cmd_ds_802_11_reset));
+
+ msleep(100);
+ ret = usb_reset_device(cardp->udev);
+ msleep(100);
+
+ 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->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.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
+ if (bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_REQUEST) ||
+ bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_DATA) ||
+ bootcmdresp.u32magicnumber == 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.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);
+
+ /* 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;
+}
+
+#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 > 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);
+ /* take care of cur_cmd = NULL case by reading the
+ * data to clear the interrupt */
+ if (!priv->cur_cmd) {
+ cmdbuf = priv->upld_buf;
+ priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
+ } else
+ cmdbuf = (u8 *) priv->cur_cmd->cmdbuf;
+
+ 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);
+ spin_unlock(&priv->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->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->driver_lock);
+ break;
+ }
+ cardp->usb_event_cause <<= 3;
+ cardp->usb_int_cause |= MRVDRV_CARDEVENT;
+ kfree_skb(skb);
+ lbs_interrupt(priv);
+ spin_unlock(&priv->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 priv->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->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;
+
+ /* Send the first firmware packet... */
+ if_usb_send_fw_pkt(cardp);
+
+ /* ... and wait for the process to complete */
+ wait_event_interruptible(cardp->fw_wq, cardp->surprise_removed || cardp->fwdnldover);
+
+ del_timer_sync(&cardp->fw_timeout);
+ usb_kill_urb(cardp->rx_urb);
+
+ 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->psstate != PS_STATE_FULL_POWER)
+ return -1;
+
+ netif_device_detach(priv->dev);
+ netif_device_detach(priv->mesh_dev);
+
+ /* Unlink tx & rx urb */
+ usb_kill_urb(cardp->tx_urb);
+ usb_kill_urb(cardp->rx_urb);
+
+ 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);
+
+ if_usb_submit_rx_urb(cardp);
+
+ netif_device_attach(priv->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 = {
+ .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");