1000 lines
25 KiB
C
1000 lines
25 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* This file contains functions used in USB interface module.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <linux/netdevice.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/olpc-ec.h>
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#ifdef CONFIG_OLPC
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#include <asm/olpc.h>
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#endif
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#define DRV_NAME "usb8xxx"
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#include "host.h"
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#include "decl.h"
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#include "defs.h"
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#include "dev.h"
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#include "cmd.h"
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#include "if_usb.h"
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#define INSANEDEBUG 0
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#define lbs_deb_usb2(...) do { if (INSANEDEBUG) lbs_deb_usbd(__VA_ARGS__); } while (0)
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#define MESSAGE_HEADER_LEN 4
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MODULE_FIRMWARE("libertas/usb8388_v9.bin");
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MODULE_FIRMWARE("libertas/usb8388_v5.bin");
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MODULE_FIRMWARE("libertas/usb8388.bin");
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MODULE_FIRMWARE("libertas/usb8682.bin");
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MODULE_FIRMWARE("usb8388.bin");
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enum {
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MODEL_UNKNOWN = 0x0,
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MODEL_8388 = 0x1,
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MODEL_8682 = 0x2
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};
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/* table of firmware file names */
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static const struct lbs_fw_table fw_table[] = {
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{ MODEL_8388, "libertas/usb8388_olpc.bin", NULL },
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{ MODEL_8388, "libertas/usb8388_v9.bin", NULL },
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{ MODEL_8388, "libertas/usb8388_v5.bin", NULL },
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{ MODEL_8388, "libertas/usb8388.bin", NULL },
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{ MODEL_8388, "usb8388.bin", NULL },
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{ MODEL_8682, "libertas/usb8682.bin", NULL },
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{ 0, NULL, NULL }
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};
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static const struct usb_device_id if_usb_table[] = {
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/* Enter the device signature inside */
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{ USB_DEVICE(0x1286, 0x2001), .driver_info = MODEL_8388 },
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{ USB_DEVICE(0x05a3, 0x8388), .driver_info = MODEL_8388 },
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, if_usb_table);
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static void if_usb_receive(struct urb *urb);
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static void if_usb_receive_fwload(struct urb *urb);
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static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
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const struct firmware *fw,
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const struct firmware *unused);
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static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
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uint8_t *payload, uint16_t nb);
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static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
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uint16_t nb);
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static void if_usb_free(struct if_usb_card *cardp);
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static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
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static int if_usb_reset_device(struct if_usb_card *cardp);
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/**
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* if_usb_write_bulk_callback - callback function to handle the status
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* of the URB
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* @urb: pointer to &urb structure
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* returns: N/A
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*/
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static void if_usb_write_bulk_callback(struct urb *urb)
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{
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struct if_usb_card *cardp = (struct if_usb_card *) urb->context;
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/* handle the transmission complete validations */
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if (urb->status == 0) {
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struct lbs_private *priv = cardp->priv;
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lbs_deb_usb2(&urb->dev->dev, "URB status is successful\n");
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lbs_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
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urb->actual_length);
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/* Boot commands such as UPDATE_FW and UPDATE_BOOT2 are not
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* passed up to the lbs level.
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*/
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if (priv && priv->dnld_sent != DNLD_BOOTCMD_SENT)
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lbs_host_to_card_done(priv);
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} else {
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/* print the failure status number for debug */
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pr_info("URB in failure status: %d\n", urb->status);
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}
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}
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/**
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* if_usb_free - free tx/rx urb, skb and rx buffer
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* @cardp: pointer to &if_usb_card
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* returns: N/A
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*/
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static void if_usb_free(struct if_usb_card *cardp)
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{
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/* Unlink tx & rx urb */
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usb_kill_urb(cardp->tx_urb);
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usb_kill_urb(cardp->rx_urb);
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usb_free_urb(cardp->tx_urb);
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cardp->tx_urb = NULL;
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usb_free_urb(cardp->rx_urb);
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cardp->rx_urb = NULL;
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kfree(cardp->ep_out_buf);
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cardp->ep_out_buf = NULL;
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}
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static void if_usb_setup_firmware(struct lbs_private *priv)
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{
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struct if_usb_card *cardp = priv->card;
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struct cmd_ds_set_boot2_ver b2_cmd;
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struct cmd_ds_802_11_fw_wake_method wake_method;
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b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
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b2_cmd.action = 0;
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b2_cmd.version = cardp->boot2_version;
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if (lbs_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
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lbs_deb_usb("Setting boot2 version failed\n");
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priv->wol_gpio = 2; /* Wake via GPIO2... */
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priv->wol_gap = 20; /* ... after 20ms */
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lbs_host_sleep_cfg(priv, EHS_WAKE_ON_UNICAST_DATA,
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(struct wol_config *) NULL);
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wake_method.hdr.size = cpu_to_le16(sizeof(wake_method));
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wake_method.action = cpu_to_le16(CMD_ACT_GET);
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if (lbs_cmd_with_response(priv, CMD_802_11_FW_WAKE_METHOD, &wake_method)) {
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netdev_info(priv->dev, "Firmware does not seem to support PS mode\n");
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priv->fwcapinfo &= ~FW_CAPINFO_PS;
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} else {
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if (le16_to_cpu(wake_method.method) == CMD_WAKE_METHOD_COMMAND_INT) {
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lbs_deb_usb("Firmware seems to support PS with wake-via-command\n");
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} else {
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/* The versions which boot up this way don't seem to
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work even if we set it to the command interrupt */
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priv->fwcapinfo &= ~FW_CAPINFO_PS;
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netdev_info(priv->dev,
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"Firmware doesn't wake via command interrupt; disabling PS mode\n");
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}
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}
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}
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static void if_usb_fw_timeo(struct timer_list *t)
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{
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struct if_usb_card *cardp = from_timer(cardp, t, fw_timeout);
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if (cardp->fwdnldover) {
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lbs_deb_usb("Download complete, no event. Assuming success\n");
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} else {
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pr_err("Download timed out\n");
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cardp->surprise_removed = 1;
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}
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wake_up(&cardp->fw_wq);
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}
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#ifdef CONFIG_OLPC
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static void if_usb_reset_olpc_card(struct lbs_private *priv)
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{
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printk(KERN_CRIT "Resetting OLPC wireless via EC...\n");
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olpc_ec_cmd(0x25, NULL, 0, NULL, 0);
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}
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#endif
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/**
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* if_usb_probe - sets the configuration values
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* @intf: &usb_interface pointer
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* @id: pointer to usb_device_id
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* returns: 0 on success, error code on failure
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*/
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static int if_usb_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct usb_device *udev;
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struct usb_host_interface *iface_desc;
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struct usb_endpoint_descriptor *endpoint;
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struct lbs_private *priv;
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struct if_usb_card *cardp;
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int r = -ENOMEM;
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int i;
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udev = interface_to_usbdev(intf);
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cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
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if (!cardp)
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goto error;
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timer_setup(&cardp->fw_timeout, if_usb_fw_timeo, 0);
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init_waitqueue_head(&cardp->fw_wq);
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cardp->udev = udev;
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cardp->model = (uint32_t) id->driver_info;
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iface_desc = intf->cur_altsetting;
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lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
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" bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
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le16_to_cpu(udev->descriptor.bcdUSB),
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udev->descriptor.bDeviceClass,
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udev->descriptor.bDeviceSubClass,
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udev->descriptor.bDeviceProtocol);
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for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
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endpoint = &iface_desc->endpoint[i].desc;
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if (usb_endpoint_is_bulk_in(endpoint)) {
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cardp->ep_in_size = le16_to_cpu(endpoint->wMaxPacketSize);
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cardp->ep_in = usb_endpoint_num(endpoint);
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lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in);
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lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n", cardp->ep_in_size);
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} else if (usb_endpoint_is_bulk_out(endpoint)) {
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cardp->ep_out_size = le16_to_cpu(endpoint->wMaxPacketSize);
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cardp->ep_out = usb_endpoint_num(endpoint);
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lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out);
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lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", cardp->ep_out_size);
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}
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}
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if (!cardp->ep_out_size || !cardp->ep_in_size) {
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lbs_deb_usbd(&udev->dev, "Endpoints not found\n");
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goto dealloc;
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}
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if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
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lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
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goto dealloc;
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}
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if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
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lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
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goto dealloc;
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}
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cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL);
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if (!cardp->ep_out_buf) {
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lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n");
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goto dealloc;
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}
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priv = lbs_add_card(cardp, &intf->dev);
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if (IS_ERR(priv)) {
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r = PTR_ERR(priv);
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goto err_add_card;
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}
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cardp->priv = priv;
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priv->hw_host_to_card = if_usb_host_to_card;
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priv->enter_deep_sleep = NULL;
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priv->exit_deep_sleep = NULL;
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priv->reset_deep_sleep_wakeup = NULL;
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priv->is_polling = false;
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#ifdef CONFIG_OLPC
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if (machine_is_olpc())
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priv->reset_card = if_usb_reset_olpc_card;
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#endif
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cardp->boot2_version = udev->descriptor.bcdDevice;
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usb_get_dev(udev);
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usb_set_intfdata(intf, cardp);
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r = lbs_get_firmware_async(priv, &udev->dev, cardp->model,
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fw_table, if_usb_prog_firmware);
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if (r)
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goto err_get_fw;
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return 0;
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err_get_fw:
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usb_put_dev(udev);
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lbs_remove_card(priv);
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err_add_card:
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if_usb_reset_device(cardp);
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dealloc:
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if_usb_free(cardp);
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kfree(cardp);
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error:
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return r;
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}
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/**
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* if_usb_disconnect - free resource and cleanup
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* @intf: USB interface structure
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* returns: N/A
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*/
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static void if_usb_disconnect(struct usb_interface *intf)
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{
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struct if_usb_card *cardp = usb_get_intfdata(intf);
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struct lbs_private *priv = cardp->priv;
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cardp->surprise_removed = 1;
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if (priv) {
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lbs_stop_card(priv);
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lbs_remove_card(priv);
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}
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/* Unlink and free urb */
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if_usb_free(cardp);
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kfree(cardp);
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usb_set_intfdata(intf, NULL);
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usb_put_dev(interface_to_usbdev(intf));
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}
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/**
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* if_usb_send_fw_pkt - download FW
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* @cardp: pointer to &struct if_usb_card
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* returns: 0
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*/
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static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
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{
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struct fwdata *fwdata = cardp->ep_out_buf;
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const uint8_t *firmware = cardp->fw->data;
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/* If we got a CRC failure on the last block, back
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up and retry it */
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if (!cardp->CRC_OK) {
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cardp->totalbytes = cardp->fwlastblksent;
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cardp->fwseqnum--;
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}
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lbs_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
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cardp->totalbytes);
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/* struct fwdata (which we sent to the card) has an
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extra __le32 field in between the header and the data,
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which is not in the struct fwheader in the actual
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firmware binary. Insert the seqnum in the middle... */
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memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
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sizeof(struct fwheader));
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cardp->fwlastblksent = cardp->totalbytes;
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cardp->totalbytes += sizeof(struct fwheader);
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memcpy(fwdata->data, &firmware[cardp->totalbytes],
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le32_to_cpu(fwdata->hdr.datalength));
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lbs_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
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le32_to_cpu(fwdata->hdr.datalength));
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fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
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cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
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usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
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le32_to_cpu(fwdata->hdr.datalength));
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if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
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lbs_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
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lbs_deb_usb2(&cardp->udev->dev, "seqnum = %d totalbytes = %d\n",
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cardp->fwseqnum, cardp->totalbytes);
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} else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
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lbs_deb_usb2(&cardp->udev->dev, "Host has finished FW downloading\n");
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lbs_deb_usb2(&cardp->udev->dev, "Downloading FW JUMP BLOCK\n");
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cardp->fwfinalblk = 1;
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}
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lbs_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
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cardp->totalbytes);
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return 0;
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}
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static int if_usb_reset_device(struct if_usb_card *cardp)
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{
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struct cmd_header *cmd = cardp->ep_out_buf + 4;
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int ret;
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*(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
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cmd->command = cpu_to_le16(CMD_802_11_RESET);
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cmd->size = cpu_to_le16(sizeof(cmd));
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cmd->result = cpu_to_le16(0);
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cmd->seqnum = cpu_to_le16(0x5a5a);
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usb_tx_block(cardp, cardp->ep_out_buf, 4 + sizeof(struct cmd_header));
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msleep(100);
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ret = usb_reset_device(cardp->udev);
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msleep(100);
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#ifdef CONFIG_OLPC
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if (ret && machine_is_olpc())
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if_usb_reset_olpc_card(NULL);
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#endif
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return ret;
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}
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/**
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* usb_tx_block - transfer the data to the device
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* @cardp: pointer to &struct if_usb_card
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* @payload: pointer to payload data
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* @nb: data length
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* returns: 0 for success or negative error code
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*/
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static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, uint16_t nb)
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{
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int ret;
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/* check if device is removed */
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if (cardp->surprise_removed) {
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lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
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ret = -ENODEV;
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goto tx_ret;
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}
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usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
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usb_sndbulkpipe(cardp->udev,
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cardp->ep_out),
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payload, nb, if_usb_write_bulk_callback, cardp);
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cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
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if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
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lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
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} else {
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lbs_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
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ret = 0;
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}
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tx_ret:
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return ret;
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}
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static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
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void (*callbackfn)(struct urb *urb))
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{
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struct sk_buff *skb;
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int ret = -1;
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if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
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pr_err("No free skb\n");
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goto rx_ret;
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}
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cardp->rx_skb = skb;
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/* Fill the receive configuration URB and initialise the Rx call back */
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usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
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usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
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skb->data + IPFIELD_ALIGN_OFFSET,
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MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
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cardp);
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lbs_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb);
|
|
if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
|
|
lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
|
|
kfree_skb(skb);
|
|
cardp->rx_skb = NULL;
|
|
ret = -1;
|
|
} else {
|
|
lbs_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
|
|
ret = 0;
|
|
}
|
|
|
|
rx_ret:
|
|
return ret;
|
|
}
|
|
|
|
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 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)) {
|
|
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 = BOOT_CMD_RESP_OK;
|
|
lbs_deb_usbd(&cardp->udev->dev,
|
|
"Received valid boot command response\n");
|
|
return;
|
|
}
|
|
if (bootcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
|
|
if (bootcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
|
|
bootcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
|
|
bootcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
|
|
if (!cardp->bootcmdresp)
|
|
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(bootcmdresp.magic));
|
|
}
|
|
} else if ((bootcmdresp.cmd != BOOT_CMD_FW_BY_USB) &&
|
|
(bootcmdresp.cmd != BOOT_CMD_UPDATE_FW) &&
|
|
(bootcmdresp.cmd != BOOT_CMD_UPDATE_BOOT2)) {
|
|
pr_info("boot cmd response cmd_tag error (%d)\n",
|
|
bootcmdresp.cmd);
|
|
} else if (bootcmdresp.result != BOOT_CMD_RESP_OK) {
|
|
pr_info("boot cmd response result error (%d)\n",
|
|
bootcmdresp.result);
|
|
} else {
|
|
cardp->bootcmdresp = 1;
|
|
lbs_deb_usbd(&cardp->udev->dev,
|
|
"Received valid boot command response\n");
|
|
}
|
|
kfree_skb(skb);
|
|
if_usb_submit_rx_urb_fwload(cardp);
|
|
return;
|
|
}
|
|
|
|
syncfwheader = kmemdup(skb->data + IPFIELD_ALIGN_OFFSET,
|
|
sizeof(struct fwsyncheader), GFP_ATOMIC);
|
|
if (!syncfwheader) {
|
|
lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
if (!syncfwheader->cmd) {
|
|
lbs_deb_usb2(&cardp->udev->dev, "FW received Blk with correct CRC\n");
|
|
lbs_deb_usb2(&cardp->udev->dev, "FW received Blk seqnum = %d\n",
|
|
le32_to_cpu(syncfwheader->seqnum));
|
|
cardp->CRC_OK = 1;
|
|
} else {
|
|
lbs_deb_usbd(&cardp->udev->dev, "FW received Blk with CRC error\n");
|
|
cardp->CRC_OK = 0;
|
|
}
|
|
|
|
kfree_skb(skb);
|
|
|
|
/* Give device 5s to either write firmware to its RAM or eeprom */
|
|
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);
|
|
}
|
|
|
|
#define MRVDRV_MIN_PKT_LEN 30
|
|
|
|
static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
|
|
struct if_usb_card *cardp,
|
|
struct lbs_private *priv)
|
|
{
|
|
if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
|
|
|| recvlength < MRVDRV_MIN_PKT_LEN) {
|
|
lbs_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
|
|
skb_put(skb, recvlength);
|
|
skb_pull(skb, MESSAGE_HEADER_LEN);
|
|
|
|
lbs_process_rxed_packet(priv, skb);
|
|
}
|
|
|
|
static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
|
|
struct sk_buff *skb,
|
|
struct if_usb_card *cardp,
|
|
struct lbs_private *priv)
|
|
{
|
|
unsigned long flags;
|
|
u8 i;
|
|
|
|
if (recvlength > LBS_CMD_BUFFER_SIZE) {
|
|
lbs_deb_usbd(&cardp->udev->dev,
|
|
"The receive buffer is too large\n");
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->driver_lock, flags);
|
|
|
|
i = (priv->resp_idx == 0) ? 1 : 0;
|
|
BUG_ON(priv->resp_len[i]);
|
|
priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN);
|
|
memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN,
|
|
priv->resp_len[i]);
|
|
dev_kfree_skb_irq(skb);
|
|
lbs_notify_command_response(priv, i);
|
|
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
|
|
|
lbs_deb_usbd(&cardp->udev->dev,
|
|
"Wake up main thread to handle cmd response\n");
|
|
}
|
|
|
|
/**
|
|
* if_usb_receive - read the packet into the upload buffer,
|
|
* wake up the main thread and initialise the Rx callack
|
|
*
|
|
* @urb: pointer to &struct urb
|
|
* returns: N/A
|
|
*/
|
|
static void if_usb_receive(struct urb *urb)
|
|
{
|
|
struct if_usb_card *cardp = urb->context;
|
|
struct sk_buff *skb = cardp->rx_skb;
|
|
struct lbs_private *priv = cardp->priv;
|
|
int recvlength = urb->actual_length;
|
|
uint8_t *recvbuff = NULL;
|
|
uint32_t recvtype = 0;
|
|
__le32 *pkt = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
|
|
uint32_t event;
|
|
|
|
if (recvlength) {
|
|
if (urb->status) {
|
|
lbs_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
|
|
urb->status);
|
|
kfree_skb(skb);
|
|
goto setup_for_next;
|
|
}
|
|
|
|
recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
|
|
recvtype = le32_to_cpu(pkt[0]);
|
|
lbs_deb_usbd(&cardp->udev->dev,
|
|
"Recv length = 0x%x, Recv type = 0x%X\n",
|
|
recvlength, recvtype);
|
|
} else if (urb->status) {
|
|
kfree_skb(skb);
|
|
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 handling */
|
|
event = le32_to_cpu(pkt[1]);
|
|
lbs_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", event);
|
|
kfree_skb(skb);
|
|
|
|
/* Icky undocumented magic special case */
|
|
if (event & 0xffff0000) {
|
|
u32 trycount = (event & 0xffff0000) >> 16;
|
|
|
|
lbs_send_tx_feedback(priv, trycount);
|
|
} else
|
|
lbs_queue_event(priv, event & 0xFF);
|
|
break;
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* if_usb_host_to_card - downloads data to FW
|
|
* @priv: pointer to &struct lbs_private structure
|
|
* @type: type of data
|
|
* @payload: pointer to data buffer
|
|
* @nb: number of bytes
|
|
* returns: 0 for success or negative error code
|
|
*/
|
|
static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
|
|
uint8_t *payload, uint16_t nb)
|
|
{
|
|
struct if_usb_card *cardp = 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 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
|
|
priv->dnld_sent = DNLD_CMD_SENT;
|
|
} else {
|
|
*(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
|
|
priv->dnld_sent = DNLD_DATA_SENT;
|
|
}
|
|
|
|
memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
|
|
|
|
return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN);
|
|
}
|
|
|
|
/**
|
|
* if_usb_issue_boot_command - issues Boot command to the Boot2 code
|
|
* @cardp: pointer to &if_usb_card
|
|
* @ivalue: 1:Boot from FW by USB-Download
|
|
* 2:Boot from FW in EEPROM
|
|
* returns: 0 for success or negative error code
|
|
*/
|
|
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));
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* check_fwfile_format - check the validity of Boot2/FW image
|
|
*
|
|
* @data: pointer to image
|
|
* @totlen: image length
|
|
* returns: 0 (good) or 1 (failure)
|
|
*/
|
|
static int check_fwfile_format(const uint8_t *data, uint32_t totlen)
|
|
{
|
|
uint32_t bincmd, exit;
|
|
uint32_t 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
|
|
lbs_deb_fw("firmware file format check PASS\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
|
|
const struct firmware *fw,
|
|
const struct firmware *unused)
|
|
{
|
|
struct if_usb_card *cardp = priv->card;
|
|
int i = 0;
|
|
static int reset_count = 10;
|
|
|
|
if (ret) {
|
|
pr_err("failed to find firmware (%d)\n", ret);
|
|
goto done;
|
|
}
|
|
|
|
cardp->fw = fw;
|
|
if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) {
|
|
ret = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
/* Cancel any pending usb business */
|
|
usb_kill_urb(cardp->rx_urb);
|
|
usb_kill_urb(cardp->tx_urb);
|
|
|
|
cardp->fwlastblksent = 0;
|
|
cardp->fwdnldover = 0;
|
|
cardp->totalbytes = 0;
|
|
cardp->fwfinalblk = 0;
|
|
cardp->bootcmdresp = 0;
|
|
|
|
restart:
|
|
if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
|
|
lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
cardp->bootcmdresp = 0;
|
|
do {
|
|
int j = 0;
|
|
i++;
|
|
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 == BOOT_CMD_RESP_NOT_SUPPORTED) {
|
|
/* Return to normal operation */
|
|
ret = -EOPNOTSUPP;
|
|
usb_kill_urb(cardp->rx_urb);
|
|
usb_kill_urb(cardp->tx_urb);
|
|
if (if_usb_submit_rx_urb(cardp) < 0)
|
|
ret = -EIO;
|
|
goto done;
|
|
} else if (cardp->bootcmdresp <= 0) {
|
|
if (--reset_count >= 0) {
|
|
if_usb_reset_device(cardp);
|
|
goto restart;
|
|
}
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
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) {
|
|
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 = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
cardp->priv->fw_ready = 1;
|
|
if_usb_submit_rx_urb(cardp);
|
|
|
|
if (lbs_start_card(priv))
|
|
goto done;
|
|
|
|
if_usb_setup_firmware(priv);
|
|
|
|
/*
|
|
* EHS_REMOVE_WAKEUP is not supported on all versions of the firmware.
|
|
*/
|
|
priv->wol_criteria = EHS_REMOVE_WAKEUP;
|
|
if (lbs_host_sleep_cfg(priv, priv->wol_criteria, NULL))
|
|
priv->ehs_remove_supported = false;
|
|
|
|
done:
|
|
cardp->fw = NULL;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct if_usb_card *cardp = usb_get_intfdata(intf);
|
|
struct lbs_private *priv = cardp->priv;
|
|
int ret;
|
|
|
|
if (priv->psstate != PS_STATE_FULL_POWER) {
|
|
ret = -1;
|
|
goto out;
|
|
}
|
|
|
|
#ifdef CONFIG_OLPC
|
|
if (machine_is_olpc()) {
|
|
if (priv->wol_criteria == EHS_REMOVE_WAKEUP)
|
|
olpc_ec_wakeup_clear(EC_SCI_SRC_WLAN);
|
|
else
|
|
olpc_ec_wakeup_set(EC_SCI_SRC_WLAN);
|
|
}
|
|
#endif
|
|
|
|
ret = lbs_suspend(priv);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Unlink tx & rx urb */
|
|
usb_kill_urb(cardp->tx_urb);
|
|
usb_kill_urb(cardp->rx_urb);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int if_usb_resume(struct usb_interface *intf)
|
|
{
|
|
struct if_usb_card *cardp = usb_get_intfdata(intf);
|
|
struct lbs_private *priv = cardp->priv;
|
|
|
|
if_usb_submit_rx_urb(cardp);
|
|
|
|
lbs_resume(priv);
|
|
|
|
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,
|
|
.reset_resume = if_usb_resume,
|
|
.disable_hub_initiated_lpm = 1,
|
|
};
|
|
|
|
module_usb_driver(if_usb_driver);
|
|
|
|
MODULE_DESCRIPTION("8388 USB WLAN Driver");
|
|
MODULE_AUTHOR("Marvell International Ltd. and Red Hat, Inc.");
|
|
MODULE_LICENSE("GPL");
|