From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001
From: Srikant Patnaik
Date: Sun, 11 Jan 2015 12:28:04 +0530
Subject: Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
---
drivers/net/wireless/libertas_tf/if_usb.c | 929 ++++++++++++++++++++++++++++++
1 file changed, 929 insertions(+)
create mode 100644 drivers/net/wireless/libertas_tf/if_usb.c
(limited to 'drivers/net/wireless/libertas_tf/if_usb.c')
diff --git a/drivers/net/wireless/libertas_tf/if_usb.c b/drivers/net/wireless/libertas_tf/if_usb.c
new file mode 100644
index 00000000..7ced130f
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/if_usb.c
@@ -0,0 +1,929 @@
+/*
+ * Copyright (C) 2008, cozybit Inc.
+ * Copyright (C) 2003-2006, Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+#define DRV_NAME "lbtf_usb"
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "libertas_tf.h"
+#include "if_usb.h"
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/netdevice.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+#define INSANEDEBUG 0
+#define lbtf_deb_usb2(...) do { if (INSANEDEBUG) lbtf_deb_usbd(__VA_ARGS__); } while (0)
+
+#define MESSAGE_HEADER_LEN 4
+
+static char *lbtf_fw_name = "lbtf_usb.bin";
+module_param_named(fw_name, lbtf_fw_name, charp, 0644);
+
+MODULE_FIRMWARE("lbtf_usb.bin");
+
+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 if_usb_card *cardp);
+static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
+ uint8_t *payload, uint16_t nb);
+static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
+ uint16_t nb, u8 data);
+static void if_usb_free(struct if_usb_card *cardp);
+static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
+static int if_usb_reset_device(struct if_usb_card *cardp);
+
+/**
+ * if_usb_wrike_bulk_callback - call back to handle URB status
+ *
+ * @param urb pointer to urb structure
+ */
+static void if_usb_write_bulk_callback(struct urb *urb)
+{
+ if (urb->status != 0) {
+ /* print the failure status number for debug */
+ pr_info("URB in failure status: %d\n", urb->status);
+ } else {
+ lbtf_deb_usb2(&urb->dev->dev, "URB status is successful\n");
+ lbtf_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
+ urb->actual_length);
+ }
+}
+
+/**
+ * if_usb_free - free tx/rx urb, skb and rx buffer
+ *
+ * @param cardp pointer if_usb_card
+ */
+static void if_usb_free(struct if_usb_card *cardp)
+{
+ lbtf_deb_enter(LBTF_DEB_USB);
+
+ /* Unlink tx & rx urb */
+ usb_kill_urb(cardp->tx_urb);
+ usb_kill_urb(cardp->rx_urb);
+ usb_kill_urb(cardp->cmd_urb);
+
+ usb_free_urb(cardp->tx_urb);
+ cardp->tx_urb = NULL;
+
+ usb_free_urb(cardp->rx_urb);
+ cardp->rx_urb = NULL;
+
+ usb_free_urb(cardp->cmd_urb);
+ cardp->cmd_urb = NULL;
+
+ kfree(cardp->ep_out_buf);
+ cardp->ep_out_buf = NULL;
+
+ lbtf_deb_leave(LBTF_DEB_USB);
+}
+
+static void if_usb_setup_firmware(struct lbtf_private *priv)
+{
+ struct if_usb_card *cardp = priv->card;
+ struct cmd_ds_set_boot2_ver b2_cmd;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+
+ if_usb_submit_rx_urb(cardp);
+ b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
+ b2_cmd.action = 0;
+ b2_cmd.version = cardp->boot2_version;
+
+ if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
+ lbtf_deb_usb("Setting boot2 version failed\n");
+
+ lbtf_deb_leave(LBTF_DEB_USB);
+}
+
+static void if_usb_fw_timeo(unsigned long priv)
+{
+ struct if_usb_card *cardp = (void *)priv;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+ if (!cardp->fwdnldover) {
+ /* Download timed out */
+ cardp->priv->surpriseremoved = 1;
+ pr_err("Download timed out\n");
+ } else {
+ lbtf_deb_usb("Download complete, no event. Assuming success\n");
+ }
+ wake_up(&cardp->fw_wq);
+ lbtf_deb_leave(LBTF_DEB_USB);
+}
+
+/**
+ * if_usb_probe - sets the configuration values
+ *
+ * @ifnum interface number
+ * @id pointer to usb_device_id
+ *
+ * Returns: 0 on success, error code on failure
+ */
+static int if_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ struct lbtf_private *priv;
+ struct if_usb_card *cardp;
+ int i;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+ udev = interface_to_usbdev(intf);
+
+ cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
+ if (!cardp)
+ goto error;
+
+ setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
+ init_waitqueue_head(&cardp->fw_wq);
+
+ cardp->udev = udev;
+ iface_desc = intf->cur_altsetting;
+
+ lbtf_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
+ " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
+ le16_to_cpu(udev->descriptor.bcdUSB),
+ udev->descriptor.bDeviceClass,
+ udev->descriptor.bDeviceSubClass,
+ udev->descriptor.bDeviceProtocol);
+
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+ if (usb_endpoint_is_bulk_in(endpoint)) {
+ cardp->ep_in_size =
+ le16_to_cpu(endpoint->wMaxPacketSize);
+ cardp->ep_in = usb_endpoint_num(endpoint);
+
+ lbtf_deb_usbd(&udev->dev, "in_endpoint = %d\n",
+ cardp->ep_in);
+ lbtf_deb_usbd(&udev->dev, "Bulk in size is %d\n",
+ cardp->ep_in_size);
+ } else if (usb_endpoint_is_bulk_out(endpoint)) {
+ cardp->ep_out_size =
+ le16_to_cpu(endpoint->wMaxPacketSize);
+ cardp->ep_out = usb_endpoint_num(endpoint);
+
+ lbtf_deb_usbd(&udev->dev, "out_endpoint = %d\n",
+ cardp->ep_out);
+ lbtf_deb_usbd(&udev->dev, "Bulk out size is %d\n",
+ cardp->ep_out_size);
+ }
+ }
+ if (!cardp->ep_out_size || !cardp->ep_in_size) {
+ lbtf_deb_usbd(&udev->dev, "Endpoints not found\n");
+ /* Endpoints not found */
+ goto dealloc;
+ }
+
+ cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!cardp->rx_urb) {
+ lbtf_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
+ goto dealloc;
+ }
+
+ cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!cardp->tx_urb) {
+ lbtf_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
+ goto dealloc;
+ }
+
+ cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!cardp->cmd_urb) {
+ lbtf_deb_usbd(&udev->dev, "Cmd URB allocation failed\n");
+ goto dealloc;
+ }
+
+ cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
+ GFP_KERNEL);
+ if (!cardp->ep_out_buf) {
+ lbtf_deb_usbd(&udev->dev, "Could not allocate buffer\n");
+ goto dealloc;
+ }
+
+ priv = lbtf_add_card(cardp, &udev->dev);
+ if (!priv)
+ goto dealloc;
+
+ cardp->priv = priv;
+
+ priv->hw_host_to_card = if_usb_host_to_card;
+ priv->hw_prog_firmware = if_usb_prog_firmware;
+ priv->hw_reset_device = if_usb_reset_device;
+ cardp->boot2_version = udev->descriptor.bcdDevice;
+
+ usb_get_dev(udev);
+ usb_set_intfdata(intf, cardp);
+
+ return 0;
+
+dealloc:
+ if_usb_free(cardp);
+error:
+lbtf_deb_leave(LBTF_DEB_MAIN);
+ return -ENOMEM;
+}
+
+/**
+ * if_usb_disconnect - free resource and cleanup
+ *
+ * @intf USB interface structure
+ */
+static void if_usb_disconnect(struct usb_interface *intf)
+{
+ struct if_usb_card *cardp = usb_get_intfdata(intf);
+ struct lbtf_private *priv = (struct lbtf_private *) cardp->priv;
+
+ lbtf_deb_enter(LBTF_DEB_MAIN);
+
+ if_usb_reset_device(cardp);
+
+ if (priv)
+ lbtf_remove_card(priv);
+
+ /* Unlink and free urb */
+ if_usb_free(cardp);
+
+ usb_set_intfdata(intf, NULL);
+ usb_put_dev(interface_to_usbdev(intf));
+
+ lbtf_deb_leave(LBTF_DEB_MAIN);
+}
+
+/**
+ * if_usb_send_fw_pkt - This function downloads the FW
+ *
+ * @priv pointer to struct lbtf_private
+ *
+ * Returns: 0
+ */
+static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
+{
+ struct fwdata *fwdata = cardp->ep_out_buf;
+ u8 *firmware = (u8 *) cardp->fw->data;
+
+ lbtf_deb_enter(LBTF_DEB_FW);
+
+ /* If we got a CRC failure on the last block, back
+ up and retry it */
+ if (!cardp->CRC_OK) {
+ cardp->totalbytes = cardp->fwlastblksent;
+ cardp->fwseqnum--;
+ }
+
+ lbtf_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
+ cardp->totalbytes);
+
+ /* struct fwdata (which we sent to the card) has an
+ extra __le32 field in between the header and the data,
+ which is not in the struct fwheader in the actual
+ firmware binary. Insert the seqnum in the middle... */
+ memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
+ sizeof(struct fwheader));
+
+ cardp->fwlastblksent = cardp->totalbytes;
+ cardp->totalbytes += sizeof(struct fwheader);
+
+ memcpy(fwdata->data, &firmware[cardp->totalbytes],
+ le32_to_cpu(fwdata->hdr.datalength));
+
+ lbtf_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
+ le32_to_cpu(fwdata->hdr.datalength));
+
+ fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
+ cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
+
+ usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
+ le32_to_cpu(fwdata->hdr.datalength), 0);
+
+ if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
+ lbtf_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
+ lbtf_deb_usb2(&cardp->udev->dev,
+ "seqnum = %d totalbytes = %d\n",
+ cardp->fwseqnum, cardp->totalbytes);
+ } else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
+ lbtf_deb_usb2(&cardp->udev->dev,
+ "Host has finished FW downloading\n");
+ lbtf_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n");
+
+ /* Host has finished FW downloading
+ * Donwloading FW JUMP BLOCK
+ */
+ cardp->fwfinalblk = 1;
+ }
+
+ lbtf_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
+ cardp->totalbytes);
+
+ lbtf_deb_leave(LBTF_DEB_FW);
+ return 0;
+}
+
+static int if_usb_reset_device(struct if_usb_card *cardp)
+{
+ struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
+ int ret;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+
+ *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
+
+ cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
+ cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset));
+ cmd->hdr.result = cpu_to_le16(0);
+ cmd->hdr.seqnum = cpu_to_le16(0x5a5a);
+ cmd->action = cpu_to_le16(CMD_ACT_HALT);
+ usb_tx_block(cardp, cardp->ep_out_buf,
+ 4 + sizeof(struct cmd_ds_802_11_reset), 0);
+
+ msleep(100);
+ ret = usb_reset_device(cardp->udev);
+ msleep(100);
+
+ lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(if_usb_reset_device);
+
+/**
+ * usb_tx_block - transfer data to the device
+ *
+ * @priv pointer to struct lbtf_private
+ * @payload pointer to payload data
+ * @nb data length
+ * @data non-zero for data, zero for commands
+ *
+ * Returns: 0 on success, nonzero otherwise.
+ */
+static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
+ uint16_t nb, u8 data)
+{
+ int ret = -1;
+ struct urb *urb;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+ /* check if device is removed */
+ if (cardp->priv->surpriseremoved) {
+ lbtf_deb_usbd(&cardp->udev->dev, "Device removed\n");
+ goto tx_ret;
+ }
+
+ if (data)
+ urb = cardp->tx_urb;
+ else
+ urb = cardp->cmd_urb;
+
+ usb_fill_bulk_urb(urb, cardp->udev,
+ usb_sndbulkpipe(cardp->udev,
+ cardp->ep_out),
+ payload, nb, if_usb_write_bulk_callback, cardp);
+
+ urb->transfer_flags |= URB_ZERO_PACKET;
+
+ if (usb_submit_urb(urb, GFP_ATOMIC)) {
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "usb_submit_urb failed: %d\n", ret);
+ goto tx_ret;
+ }
+
+ lbtf_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
+
+ ret = 0;
+
+tx_ret:
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return ret;
+}
+
+static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
+ void (*callbackfn)(struct urb *urb))
+{
+ struct sk_buff *skb;
+ int ret = -1;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+
+ skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
+ if (!skb) {
+ pr_err("No free skb\n");
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return -1;
+ }
+
+ cardp->rx_skb = skb;
+
+ /* Fill the receive configuration URB and initialise the Rx call back */
+ usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
+ usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
+ skb_tail_pointer(skb),
+ MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
+
+ cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
+
+ lbtf_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n",
+ cardp->rx_urb);
+ ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC);
+ if (ret) {
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "Submit Rx URB failed: %d\n", ret);
+ kfree_skb(skb);
+ cardp->rx_skb = NULL;
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return -1;
+ } else {
+ lbtf_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return 0;
+ }
+}
+
+static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
+{
+ return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
+}
+
+static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
+{
+ return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
+}
+
+static void if_usb_receive_fwload(struct urb *urb)
+{
+ struct if_usb_card *cardp = urb->context;
+ struct sk_buff *skb = cardp->rx_skb;
+ struct fwsyncheader *syncfwheader;
+ struct bootcmdresp bcmdresp;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+ if (urb->status) {
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "URB status is failed during fw load\n");
+ kfree_skb(skb);
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return;
+ }
+
+ if (cardp->fwdnldover) {
+ __le32 *tmp = (__le32 *)(skb->data);
+
+ if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
+ tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
+ /* Firmware ready event received */
+ pr_info("Firmware ready event received\n");
+ wake_up(&cardp->fw_wq);
+ } else {
+ lbtf_deb_usb("Waiting for confirmation; got %x %x\n",
+ le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
+ if_usb_submit_rx_urb_fwload(cardp);
+ }
+ kfree_skb(skb);
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return;
+ }
+ if (cardp->bootcmdresp <= 0) {
+ memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
+
+ if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
+ kfree_skb(skb);
+ if_usb_submit_rx_urb_fwload(cardp);
+ cardp->bootcmdresp = 1;
+ /* Received valid boot command response */
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "Received valid boot command response\n");
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return;
+ }
+ if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
+ if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
+ bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
+ bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
+ if (!cardp->bootcmdresp)
+ pr_info("Firmware already seems alive; resetting\n");
+ cardp->bootcmdresp = -1;
+ } else {
+ pr_info("boot cmd response wrong magic number (0x%x)\n",
+ le32_to_cpu(bcmdresp.magic));
+ }
+ } else if (bcmdresp.cmd != BOOT_CMD_FW_BY_USB) {
+ pr_info("boot cmd response cmd_tag error (%d)\n",
+ bcmdresp.cmd);
+ } else if (bcmdresp.result != BOOT_CMD_RESP_OK) {
+ pr_info("boot cmd response result error (%d)\n",
+ bcmdresp.result);
+ } else {
+ cardp->bootcmdresp = 1;
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "Received valid boot command response\n");
+ }
+
+ kfree_skb(skb);
+ if_usb_submit_rx_urb_fwload(cardp);
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return;
+ }
+
+ syncfwheader = kmemdup(skb->data, sizeof(struct fwsyncheader),
+ GFP_ATOMIC);
+ if (!syncfwheader) {
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "Failure to allocate syncfwheader\n");
+ kfree_skb(skb);
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return;
+ }
+
+ if (!syncfwheader->cmd) {
+ lbtf_deb_usb2(&cardp->udev->dev,
+ "FW received Blk with correct CRC\n");
+ lbtf_deb_usb2(&cardp->udev->dev,
+ "FW received Blk seqnum = %d\n",
+ le32_to_cpu(syncfwheader->seqnum));
+ cardp->CRC_OK = 1;
+ } else {
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "FW received Blk with CRC error\n");
+ cardp->CRC_OK = 0;
+ }
+
+ kfree_skb(skb);
+
+ /* reschedule timer for 200ms hence */
+ mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
+
+ if (cardp->fwfinalblk) {
+ cardp->fwdnldover = 1;
+ goto exit;
+ }
+
+ if_usb_send_fw_pkt(cardp);
+
+ exit:
+ if_usb_submit_rx_urb_fwload(cardp);
+
+ kfree(syncfwheader);
+
+ lbtf_deb_leave(LBTF_DEB_USB);
+}
+
+#define MRVDRV_MIN_PKT_LEN 30
+
+static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
+ struct if_usb_card *cardp,
+ struct lbtf_private *priv)
+{
+ if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
+ || recvlength < MRVDRV_MIN_PKT_LEN) {
+ lbtf_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ skb_put(skb, recvlength);
+ skb_pull(skb, MESSAGE_HEADER_LEN);
+ lbtf_rx(priv, skb);
+}
+
+static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
+ struct sk_buff *skb,
+ struct if_usb_card *cardp,
+ struct lbtf_private *priv)
+{
+ if (recvlength > LBS_CMD_BUFFER_SIZE) {
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "The receive buffer is too large\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ BUG_ON(!in_interrupt());
+
+ spin_lock(&priv->driver_lock);
+ memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
+ recvlength - MESSAGE_HEADER_LEN);
+ kfree_skb(skb);
+ lbtf_cmd_response_rx(priv);
+ spin_unlock(&priv->driver_lock);
+}
+
+/**
+ * if_usb_receive - read data received from the device.
+ *
+ * @urb pointer to struct urb
+ */
+static void if_usb_receive(struct urb *urb)
+{
+ struct if_usb_card *cardp = urb->context;
+ struct sk_buff *skb = cardp->rx_skb;
+ struct lbtf_private *priv = cardp->priv;
+ int recvlength = urb->actual_length;
+ uint8_t *recvbuff = NULL;
+ uint32_t recvtype = 0;
+ __le32 *pkt = (__le32 *) skb->data;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+
+ if (recvlength) {
+ if (urb->status) {
+ lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
+ urb->status);
+ kfree_skb(skb);
+ goto setup_for_next;
+ }
+
+ recvbuff = skb->data;
+ recvtype = le32_to_cpu(pkt[0]);
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "Recv length = 0x%x, Recv type = 0x%X\n",
+ recvlength, recvtype);
+ } else if (urb->status) {
+ kfree_skb(skb);
+ lbtf_deb_leave(LBTF_DEB_USB);
+ return;
+ }
+
+ switch (recvtype) {
+ case CMD_TYPE_DATA:
+ process_cmdtypedata(recvlength, skb, cardp, priv);
+ break;
+
+ case CMD_TYPE_REQUEST:
+ process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
+ break;
+
+ case CMD_TYPE_INDICATION:
+ {
+ /* Event cause handling */
+ u32 event_cause = le32_to_cpu(pkt[1]);
+ lbtf_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n",
+ event_cause);
+
+ /* Icky undocumented magic special case */
+ if (event_cause & 0xffff0000) {
+ u16 tmp;
+ u8 retrycnt;
+ u8 failure;
+
+ tmp = event_cause >> 16;
+ retrycnt = tmp & 0x00ff;
+ failure = (tmp & 0xff00) >> 8;
+ lbtf_send_tx_feedback(priv, retrycnt, failure);
+ } else if (event_cause == LBTF_EVENT_BCN_SENT)
+ lbtf_bcn_sent(priv);
+ else
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "Unsupported notification %d received\n",
+ event_cause);
+ kfree_skb(skb);
+ break;
+ }
+ default:
+ lbtf_deb_usbd(&cardp->udev->dev,
+ "libertastf: unknown command type 0x%X\n", recvtype);
+ kfree_skb(skb);
+ break;
+ }
+
+setup_for_next:
+ if_usb_submit_rx_urb(cardp);
+ lbtf_deb_leave(LBTF_DEB_USB);
+}
+
+/**
+ * if_usb_host_to_card - Download data to the device
+ *
+ * @priv pointer to struct lbtf_private structure
+ * @type type of data
+ * @buf pointer to data buffer
+ * @len number of bytes
+ *
+ * Returns: 0 on success, nonzero otherwise
+ */
+static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
+ uint8_t *payload, uint16_t nb)
+{
+ struct if_usb_card *cardp = priv->card;
+ u8 data = 0;
+
+ lbtf_deb_usbd(&cardp->udev->dev, "*** type = %u\n", type);
+ lbtf_deb_usbd(&cardp->udev->dev, "size after = %d\n", nb);
+
+ if (type == MVMS_CMD) {
+ *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
+ } else {
+ *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
+ data = 1;
+ }
+
+ memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
+
+ return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN,
+ data);
+}
+
+/**
+ * if_usb_issue_boot_command - Issue boot command to Boot2.
+ *
+ * @ivalue 1 boots from FW by USB-Download, 2 boots from FW in EEPROM.
+ *
+ * Returns: 0
+ */
+static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
+{
+ struct bootcmd *bootcmd = cardp->ep_out_buf;
+
+ /* Prepare command */
+ bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
+ bootcmd->cmd = ivalue;
+ memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
+
+ /* Issue command */
+ usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0);
+
+ return 0;
+}
+
+
+/**
+ * check_fwfile_format - Check the validity of Boot2/FW image.
+ *
+ * @data pointer to image
+ * @totlen image length
+ *
+ * Returns: 0 if the image is valid, nonzero otherwise.
+ */
+static int check_fwfile_format(const 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)
+ pr_err("firmware file format check FAIL\n");
+ else
+ lbtf_deb_fw("firmware file format check PASS\n");
+
+ return ret;
+}
+
+
+static int if_usb_prog_firmware(struct if_usb_card *cardp)
+{
+ int i = 0;
+ static int reset_count = 10;
+ int ret = 0;
+
+ lbtf_deb_enter(LBTF_DEB_USB);
+
+ kparam_block_sysfs_write(fw_name);
+ ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
+ if (ret < 0) {
+ pr_err("request_firmware() failed with %#x\n", ret);
+ pr_err("firmware %s not found\n", lbtf_fw_name);
+ kparam_unblock_sysfs_write(fw_name);
+ goto done;
+ }
+ kparam_unblock_sysfs_write(fw_name);
+
+ if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
+ goto release_fw;
+
+restart:
+ if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
+ lbtf_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->priv->surpriseremoved ||
+ cardp->fwdnldover);
+
+ del_timer_sync(&cardp->fw_timeout);
+ usb_kill_urb(cardp->rx_urb);
+
+ if (!cardp->fwdnldover) {
+ pr_info("failed to load fw, resetting device!\n");
+ if (--reset_count >= 0) {
+ if_usb_reset_device(cardp);
+ goto restart;
+ }
+
+ pr_info("FW download failure, time = %d ms\n", i * 100);
+ ret = -1;
+ goto release_fw;
+ }
+
+ cardp->priv->fw_ready = 1;
+
+ release_fw:
+ release_firmware(cardp->fw);
+ cardp->fw = NULL;
+
+ if_usb_setup_firmware(cardp->priv);
+
+ done:
+ lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(if_usb_prog_firmware);
+
+
+#define if_usb_suspend NULL
+#define if_usb_resume NULL
+
+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,
+};
+
+module_usb_driver(if_usb_driver);
+
+MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver");
+MODULE_AUTHOR("Cozybit Inc.");
+MODULE_LICENSE("GPL");
--
cgit