staging: r8188eu: Add files for new driver - part 20 (c2478d39) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/staging/rtl8188eu/os_dep/usb_intf.c

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		/******************************************************************************
		*
		* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of version 2 of the GNU General Public License as
		* published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful, but WITHOUT
		* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
		* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
		* more details.
		*
		* You should have received a copy of the GNU General Public License along with
		* this program; if not, write to the Free Software Foundation, Inc.,
		* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
		*
		*
		******************************************************************************/
		#define _HCI_INTF_C_

		#include <osdep_service.h>
		#include <drv_types.h>
		#include <recv_osdep.h>
		#include <xmit_osdep.h>
		#include <hal_intf.h>
		#include <rtw_version.h>
		#include <linux/usb.h>
		#include <osdep_intf.h>

		#include <usb_vendor_req.h>
		#include <usb_ops.h>
		#include <usb_osintf.h>
		#include <usb_hal.h>
		#include <rtw_ioctl.h>

		int ui_pid[3] = {0, 0, 0};

		static int rtw_suspend(struct usb_interface *intf, pm_message_t message);
		static int rtw_resume(struct usb_interface *intf);


		static int rtw_drv_init(struct usb_interface pusb_intf, const struct usb_device_id pdid);
		static void rtw_dev_remove(struct usb_interface *pusb_intf);


		#define USB_VENDER_ID_REALTEK 0x0bda

		/* DID_USB_v916_20130116 */
		static struct usb_device_id rtw_usb_id_tbl[] = {
		/=== Realtek demoboard ===/
		{USB_DEVICE(USB_VENDER_ID_REALTEK, 0x8179)}, /* 8188EUS */
		{USB_DEVICE(USB_VENDER_ID_REALTEK, 0x0179)}, /* 8188ETV */
		/=== Customer ID ===/
		/**** 8188EUS ******/
		{USB_DEVICE(0x8179, 0x07B8)}, /* Abocom - Abocom */
		{} /* Terminating entry */
		};

		MODULE_DEVICE_TABLE(usb, rtw_usb_id_tbl);

		static struct specific_device_id specific_device_id_tbl[] = {
		{} /* empty table for now */
		};

		struct rtw_usb_drv {
		struct usb_driver usbdrv;
		int drv_registered;
		struct mutex hw_init_mutex;
		};

		static struct rtw_usb_drv rtl8188e_usb_drv = {
		.usbdrv.name = (char *)"r8188eu",
		.usbdrv.probe = rtw_drv_init,
		.usbdrv.disconnect = rtw_dev_remove,
		.usbdrv.id_table = rtw_usb_id_tbl,
		.usbdrv.suspend = rtw_suspend,
		.usbdrv.resume = rtw_resume,
		.usbdrv.reset_resume = rtw_resume,
		};

		static struct rtw_usb_drv *usb_drv = &rtl8188e_usb_drv;

		static inline int RT_usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
		{
		return (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN;
		}

		static inline int RT_usb_endpoint_dir_out(const struct usb_endpoint_descriptor *epd)
		{
		return (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT;
		}

		static inline int RT_usb_endpoint_xfer_int(const struct usb_endpoint_descriptor *epd)
		{
		return (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT;
		}

		static inline int RT_usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor *epd)
		{
		return (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK;
		}

		static inline int RT_usb_endpoint_is_bulk_in(const struct usb_endpoint_descriptor *epd)
		{
		return RT_usb_endpoint_xfer_bulk(epd) && RT_usb_endpoint_dir_in(epd);
		}

		static inline int RT_usb_endpoint_is_bulk_out(const struct usb_endpoint_descriptor *epd)
		{
		return RT_usb_endpoint_xfer_bulk(epd) && RT_usb_endpoint_dir_out(epd);
		}

		static inline int usb_endpoint_is_int(const struct usb_endpoint_descriptor *epd)
		{
		return RT_usb_endpoint_xfer_int(epd) && RT_usb_endpoint_dir_in(epd);
		}

		static inline int RT_usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
		{
		return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
		}

		static u8 rtw_init_intf_priv(struct dvobj_priv *dvobj)
		{
		u8 rst = _SUCCESS;

		_rtw_mutex_init(&dvobj->usb_vendor_req_mutex);

		dvobj->usb_alloc_vendor_req_buf = rtw_zmalloc(MAX_USB_IO_CTL_SIZE);
		if (dvobj->usb_alloc_vendor_req_buf == NULL) {
		DBG_88E("alloc usb_vendor_req_buf failed... /n");
		rst = _FAIL;
		goto exit;
		}
		dvobj->usb_vendor_req_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(dvobj->usb_alloc_vendor_req_buf), ALIGNMENT_UNIT);
		exit:
		return rst;
		}

		static u8 rtw_deinit_intf_priv(struct dvobj_priv *dvobj)
		{
		u8 rst = _SUCCESS;

		kfree(dvobj->usb_alloc_vendor_req_buf);
		_rtw_mutex_free(&dvobj->usb_vendor_req_mutex);
		return rst;
		}

		static struct dvobj_priv usb_dvobj_init(struct usb_interface usb_intf)
		{
		int i;
		int status = _FAIL;
		struct dvobj_priv *pdvobjpriv;
		struct usb_host_config *phost_conf;
		struct usb_config_descriptor *pconf_desc;
		struct usb_host_interface *phost_iface;
		struct usb_interface_descriptor *piface_desc;
		struct usb_host_endpoint *phost_endp;
		struct usb_endpoint_descriptor *pendp_desc;
		struct usb_device *pusbd;

		_func_enter_;

		pdvobjpriv = (struct dvobj_priv )rtw_zmalloc(sizeof(pdvobjpriv));
		if (pdvobjpriv == NULL)
		goto exit;

		pdvobjpriv->pusbintf = usb_intf;
		pusbd = interface_to_usbdev(usb_intf);
		pdvobjpriv->pusbdev = pusbd;
		usb_set_intfdata(usb_intf, pdvobjpriv);

		pdvobjpriv->RtNumInPipes = 0;
		pdvobjpriv->RtNumOutPipes = 0;

		phost_conf = pusbd->actconfig;
		pconf_desc = &phost_conf->desc;

		phost_iface = &usb_intf->altsetting[0];
		piface_desc = &phost_iface->desc;

		pdvobjpriv->NumInterfaces = pconf_desc->bNumInterfaces;
		pdvobjpriv->InterfaceNumber = piface_desc->bInterfaceNumber;
		pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;

		for (i = 0; i < pdvobjpriv->nr_endpoint; i++) {
		phost_endp = phost_iface->endpoint + i;
		if (phost_endp) {
		pendp_desc = &phost_endp->desc;

		DBG_88E("\nusb_endpoint_descriptor(%d):\n", i);
		DBG_88E("bLength=%x\n", pendp_desc->bLength);
		DBG_88E("bDescriptorType=%x\n",
		pendp_desc->bDescriptorType);
		DBG_88E("bEndpointAddress=%x\n",
		pendp_desc->bEndpointAddress);
		DBG_88E("wMaxPacketSize=%d\n",
		le16_to_cpu(pendp_desc->wMaxPacketSize));
		DBG_88E("bInterval=%x\n", pendp_desc->bInterval);

		if (RT_usb_endpoint_is_bulk_in(pendp_desc)) {
		DBG_88E("RT_usb_endpoint_is_bulk_in = %x\n",
		RT_usb_endpoint_num(pendp_desc));
		pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = RT_usb_endpoint_num(pendp_desc);
		pdvobjpriv->RtNumInPipes++;
		} else if (usb_endpoint_is_int(pendp_desc)) {
		DBG_88E("usb_endpoint_is_int = %x, Interval = %x\n",
		RT_usb_endpoint_num(pendp_desc),
		pendp_desc->bInterval);
		pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = RT_usb_endpoint_num(pendp_desc);
		pdvobjpriv->RtNumInPipes++;
		} else if (RT_usb_endpoint_is_bulk_out(pendp_desc)) {
		DBG_88E("RT_usb_endpoint_is_bulk_out = %x\n",
		RT_usb_endpoint_num(pendp_desc));
		pdvobjpriv->RtOutPipe[pdvobjpriv->RtNumOutPipes] = RT_usb_endpoint_num(pendp_desc);
		pdvobjpriv->RtNumOutPipes++;
		}
		pdvobjpriv->ep_num[i] = RT_usb_endpoint_num(pendp_desc);
		}
		}

		DBG_88E("nr_endpoint=%d, in_num=%d, out_num=%d\n\n",
		pdvobjpriv->nr_endpoint, pdvobjpriv->RtNumInPipes,
		pdvobjpriv->RtNumOutPipes);

		if (pusbd->speed == USB_SPEED_HIGH) {
		pdvobjpriv->ishighspeed = true;
		DBG_88E("USB_SPEED_HIGH\n");
		} else {
		pdvobjpriv->ishighspeed = false;
		DBG_88E("NON USB_SPEED_HIGH\n");
		}

		if (rtw_init_intf_priv(pdvobjpriv) == _FAIL) {
		RT_TRACE(_module_os_intfs_c_, _drv_err_,
		("\n Can't INIT rtw_init_intf_priv\n"));
		goto free_dvobj;
		}

		/* 3 misc */
		_rtw_init_sema(&(pdvobjpriv->usb_suspend_sema), 0);
		rtw_reset_continual_urb_error(pdvobjpriv);

		usb_get_dev(pusbd);

		status = _SUCCESS;

		free_dvobj:
		if (status != _SUCCESS && pdvobjpriv) {
		usb_set_intfdata(usb_intf, NULL);
		kfree(pdvobjpriv);
		pdvobjpriv = NULL;
		}
		exit:
		_func_exit_;
		return pdvobjpriv;
		}

		static void usb_dvobj_deinit(struct usb_interface *usb_intf)
		{
		struct dvobj_priv *dvobj = usb_get_intfdata(usb_intf);

		_func_enter_;

		usb_set_intfdata(usb_intf, NULL);
		if (dvobj) {
		/* Modify condition for 92DU DMDP 2010.11.18, by Thomas */
		if ((dvobj->NumInterfaces != 2 &&
		dvobj->NumInterfaces != 3) \|\|
		(dvobj->InterfaceNumber == 1)) {
		if (interface_to_usbdev(usb_intf)->state !=
		USB_STATE_NOTATTACHED) {
		/* If we didn't unplug usb dongle and
		* remove/insert module, driver fails
		* on sitesurvey for the first time when
		* device is up . Reset usb port for sitesurvey
		* fail issue. */
		DBG_88E("usb attached..., try to reset usb device\n");
		usb_reset_device(interface_to_usbdev(usb_intf));
		}
		}
		rtw_deinit_intf_priv(dvobj);
		kfree(dvobj);
		}

		usb_put_dev(interface_to_usbdev(usb_intf));

		_func_exit_;
		}

		static void chip_by_usb_id(struct adapter *padapter,
		const struct usb_device_id *pdid)
		{
		padapter->chip_type = NULL_CHIP_TYPE;
		hal_set_hw_type(padapter);
		}

		static void usb_intf_start(struct adapter *padapter)
		{
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+usb_intf_start\n"));

		rtw_hal_inirp_init(padapter);

		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-usb_intf_start\n"));
		}

		static void usb_intf_stop(struct adapter *padapter)
		{
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+usb_intf_stop\n"));

		/* disabel_hw_interrupt */
		if (!padapter->bSurpriseRemoved) {
		/* device still exists, so driver can do i/o operation */
		/* TODO: */
		RT_TRACE(_module_hci_intfs_c_, _drv_err_,
		("SurpriseRemoved == false\n"));
		}

		/* cancel in irp */
		rtw_hal_inirp_deinit(padapter);

		/* cancel out irp */
		rtw_write_port_cancel(padapter);

		/* todo:cancel other irps */

		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-usb_intf_stop\n"));
		}

		static void rtw_dev_unload(struct adapter *padapter)
		{
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_dev_unload\n"));

		if (padapter->bup) {
		DBG_88E("===> rtw_dev_unload\n");
		padapter->bDriverStopped = true;
		if (padapter->xmitpriv.ack_tx)
		rtw_ack_tx_done(&padapter->xmitpriv, RTW_SCTX_DONE_DRV_STOP);
		/* s3. */
		if (padapter->intf_stop)
		padapter->intf_stop(padapter);
		/* s4. */
		if (!padapter->pwrctrlpriv.bInternalAutoSuspend)
		rtw_stop_drv_threads(padapter);

		/* s5. */
		if (!padapter->bSurpriseRemoved) {
		rtw_hal_deinit(padapter);
		padapter->bSurpriseRemoved = true;
		}

		padapter->bup = false;
		} else {
		RT_TRACE(_module_hci_intfs_c_, _drv_err_,
		("r871x_dev_unload():padapter->bup == false\n"));
		}

		DBG_88E("<=== rtw_dev_unload\n");

		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-rtw_dev_unload\n"));
		}

		static void process_spec_devid(const struct usb_device_id *pdid)
		{
		u16 vid, pid;
		u32 flags;
		int i;
		int num = sizeof(specific_device_id_tbl) /
		sizeof(struct specific_device_id);

		for (i = 0; i < num; i++) {
		vid = specific_device_id_tbl[i].idVendor;
		pid = specific_device_id_tbl[i].idProduct;
		flags = specific_device_id_tbl[i].flags;

		if ((pdid->idVendor == vid) && (pdid->idProduct == pid) &&
		(flags&SPEC_DEV_ID_DISABLE_HT)) {
		rtw_ht_enable = 0;
		rtw_cbw40_enable = 0;
		rtw_ampdu_enable = 0;
		}
		}
		}

		int rtw_hw_suspend(struct adapter *padapter)
		{
		struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
		struct net_device *pnetdev = padapter->pnetdev;

		_func_enter_;

		if ((!padapter->bup) \|\| (padapter->bDriverStopped) \|\|
		(padapter->bSurpriseRemoved)) {
		DBG_88E("padapter->bup=%d bDriverStopped=%d bSurpriseRemoved = %d\n",
		padapter->bup, padapter->bDriverStopped,
		padapter->bSurpriseRemoved);
		goto error_exit;
		}

		if (padapter) { /* system suspend */
		LeaveAllPowerSaveMode(padapter);

		DBG_88E("==> rtw_hw_suspend\n");
		_enter_pwrlock(&pwrpriv->lock);
		pwrpriv->bips_processing = true;
		/* s1. */
		if (pnetdev) {
		netif_carrier_off(pnetdev);
		rtw_netif_stop_queue(pnetdev);
		}

		/* s2. */
		rtw_disassoc_cmd(padapter, 500, false);

		/* s2-2. indicate disconnect to os */
		{
		struct mlme_priv *pmlmepriv = &padapter->mlmepriv;

		if (check_fwstate(pmlmepriv, _FW_LINKED)) {
		_clr_fwstate_(pmlmepriv, _FW_LINKED);

		rtw_led_control(padapter, LED_CTL_NO_LINK);

		rtw_os_indicate_disconnect(padapter);

		/* donnot enqueue cmd */
		rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_DISCONNECT, 0);
		}
		}
		/* s2-3. */
		rtw_free_assoc_resources(padapter, 1);

		/* s2-4. */
		rtw_free_network_queue(padapter, true);
		rtw_ips_dev_unload(padapter);
		pwrpriv->rf_pwrstate = rf_off;
		pwrpriv->bips_processing = false;

		_exit_pwrlock(&pwrpriv->lock);
		} else {
		goto error_exit;
		}
		_func_exit_;
		return 0;

		error_exit:
		DBG_88E("%s, failed\n", __func__);
		return -1;
		}

		int rtw_hw_resume(struct adapter *padapter)
		{
		struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
		struct net_device *pnetdev = padapter->pnetdev;

		_func_enter_;

		if (padapter) { /* system resume */
		DBG_88E("==> rtw_hw_resume\n");
		_enter_pwrlock(&pwrpriv->lock);
		pwrpriv->bips_processing = true;
		rtw_reset_drv_sw(padapter);

		if (pm_netdev_open(pnetdev, false) != 0) {
		_exit_pwrlock(&pwrpriv->lock);
		goto error_exit;
		}

		netif_device_attach(pnetdev);
		netif_carrier_on(pnetdev);

		if (!netif_queue_stopped(pnetdev))
		netif_start_queue(pnetdev);
		else
		netif_wake_queue(pnetdev);

		pwrpriv->bkeepfwalive = false;
		pwrpriv->brfoffbyhw = false;

		pwrpriv->rf_pwrstate = rf_on;
		pwrpriv->bips_processing = false;

		_exit_pwrlock(&pwrpriv->lock);
		} else {
		goto error_exit;
		}

		_func_exit_;

		return 0;
		error_exit:
		DBG_88E("%s, Open net dev failed\n", __func__);
		return -1;
		}

		static int rtw_suspend(struct usb_interface *pusb_intf, pm_message_t message)
		{
		struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
		struct adapter *padapter = dvobj->if1;
		struct net_device *pnetdev = padapter->pnetdev;
		struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
		struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;

		int ret = 0;
		u32 start_time = rtw_get_current_time();

		_func_enter_;

		DBG_88E("==> %s (%s:%d)\n", __func__, current->comm, current->pid);

		if ((!padapter->bup) \|\| (padapter->bDriverStopped) \|\|
		(padapter->bSurpriseRemoved)) {
		DBG_88E("padapter->bup=%d bDriverStopped=%d bSurpriseRemoved = %d\n",
		padapter->bup, padapter->bDriverStopped,
		padapter->bSurpriseRemoved);
		goto exit;
		}

		pwrpriv->bInSuspend = true;
		rtw_cancel_all_timer(padapter);
		LeaveAllPowerSaveMode(padapter);

		_enter_pwrlock(&pwrpriv->lock);
		/* s1. */
		if (pnetdev) {
		netif_carrier_off(pnetdev);
		rtw_netif_stop_queue(pnetdev);
		}

		/* s2. */
		rtw_disassoc_cmd(padapter, 0, false);

		if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) &&
		check_fwstate(pmlmepriv, _FW_LINKED)) {
		DBG_88E("%s:%d %s(%pM), length:%d assoc_ssid.length:%d\n",
		__func__, __LINE__,
		pmlmepriv->cur_network.network.Ssid.Ssid,
		pmlmepriv->cur_network.network.MacAddress,
		pmlmepriv->cur_network.network.Ssid.SsidLength,
		pmlmepriv->assoc_ssid.SsidLength);

		pmlmepriv->to_roaming = 1;
		}
		/* s2-2. indicate disconnect to os */
		rtw_indicate_disconnect(padapter);
		/* s2-3. */
		rtw_free_assoc_resources(padapter, 1);
		/* s2-4. */
		rtw_free_network_queue(padapter, true);

		rtw_dev_unload(padapter);
		_exit_pwrlock(&pwrpriv->lock);

		if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY))
		rtw_indicate_scan_done(padapter, 1);

		if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING))
		rtw_indicate_disconnect(padapter);

		exit:
		DBG_88E("<=== %s return %d.............. in %dms\n", __func__
		, ret, rtw_get_passing_time_ms(start_time));

		_func_exit_;
		return ret;
		}

		static int rtw_resume(struct usb_interface *pusb_intf)
		{
		struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
		struct adapter *padapter = dvobj->if1;
		struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
		int ret = 0;

		if (pwrpriv->bInternalAutoSuspend)
		ret = rtw_resume_process(padapter);
		else
		ret = rtw_resume_process(padapter);
		return ret;
		}

		int rtw_resume_process(struct adapter *padapter)
		{
		struct net_device *pnetdev;
		struct pwrctrl_priv *pwrpriv = NULL;
		int ret = -1;
		u32 start_time = rtw_get_current_time();
		_func_enter_;

		DBG_88E("==> %s (%s:%d)\n", __func__, current->comm, current->pid);

		if (padapter) {
		pnetdev = padapter->pnetdev;
		pwrpriv = &padapter->pwrctrlpriv;
		} else {
		goto exit;
		}

		_enter_pwrlock(&pwrpriv->lock);
		rtw_reset_drv_sw(padapter);
		if (pwrpriv)
		pwrpriv->bkeepfwalive = false;

		DBG_88E("bkeepfwalive(%x)\n", pwrpriv->bkeepfwalive);
		if (pm_netdev_open(pnetdev, true) != 0)
		goto exit;

		netif_device_attach(pnetdev);
		netif_carrier_on(pnetdev);

		_exit_pwrlock(&pwrpriv->lock);

		if (padapter->pid[1] != 0) {
		DBG_88E("pid[1]:%d\n", padapter->pid[1]);
		rtw_signal_process(padapter->pid[1], SIGUSR2);
		}

		rtw_roaming(padapter, NULL);

		ret = 0;
		exit:
		if (pwrpriv)
		pwrpriv->bInSuspend = false;
		DBG_88E("<=== %s return %d.............. in %dms\n", __func__,
		ret, rtw_get_passing_time_ms(start_time));

		_func_exit_;

		return ret;
		}

		/*
		* drv_init() - a device potentially for us
		*
		* notes: drv_init() is called when the bus driver has located
		* a card for us to support.
		* We accept the new device by returning 0.
		*/

		static struct adapter rtw_usb_if1_init(struct dvobj_priv dvobj,
		struct usb_interface pusb_intf, const struct usb_device_id pdid)
		{
		struct adapter *padapter = NULL;
		struct net_device *pnetdev = NULL;
		int status = _FAIL;

		padapter = (struct adapter )rtw_zvmalloc(sizeof(padapter));
		if (padapter == NULL)
		goto exit;
		padapter->dvobj = dvobj;
		dvobj->if1 = padapter;

		padapter->bDriverStopped = true;

		padapter->hw_init_mutex = &usb_drv->hw_init_mutex;

		/* step 1-1., decide the chip_type via vid/pid */
		padapter->interface_type = RTW_USB;
		chip_by_usb_id(padapter, pdid);

		if (rtw_handle_dualmac(padapter, 1) != _SUCCESS)
		goto free_adapter;

		pnetdev = rtw_init_netdev(padapter);
		if (pnetdev == NULL)
		goto handle_dualmac;
		SET_NETDEV_DEV(pnetdev, dvobj_to_dev(dvobj));
		padapter = rtw_netdev_priv(pnetdev);

		/* step 2. hook HalFunc, allocate HalData */
		hal_set_hal_ops(padapter);

		padapter->intf_start = &usb_intf_start;
		padapter->intf_stop = &usb_intf_stop;

		/* step init_io_priv */
		rtw_init_io_priv(padapter, usb_set_intf_ops);

		/* step read_chip_version */
		rtw_hal_read_chip_version(padapter);

		/* step usb endpoint mapping */
		rtw_hal_chip_configure(padapter);

		/* step read efuse/eeprom data and get mac_addr */
		rtw_hal_read_chip_info(padapter);

		/* step 5. */
		if (rtw_init_drv_sw(padapter) == _FAIL) {
		RT_TRACE(_module_hci_intfs_c_, _drv_err_,
		("Initialize driver software resource Failed!\n"));
		goto free_hal_data;
		}

		#ifdef CONFIG_PM
		if (padapter->pwrctrlpriv.bSupportRemoteWakeup) {
		dvobj->pusbdev->do_remote_wakeup = 1;
		pusb_intf->needs_remote_wakeup = 1;
		device_init_wakeup(&pusb_intf->dev, 1);
		DBG_88E("\n padapter->pwrctrlpriv.bSupportRemoteWakeup~~~~~~\n");
		DBG_88E("\n padapter->pwrctrlpriv.bSupportRemoteWakeup~~~[%d]~~~\n",
		device_may_wakeup(&pusb_intf->dev));
		}
		#endif

		/* 2012-07-11 Move here to prevent the 8723AS-VAU BT auto
		* suspend influence */
		if (usb_autopm_get_interface(pusb_intf) < 0)
		DBG_88E("can't get autopm:\n");

		/* alloc dev name after read efuse. */
		rtw_init_netdev_name(pnetdev, padapter->registrypriv.ifname);
		rtw_macaddr_cfg(padapter->eeprompriv.mac_addr);
		#ifdef CONFIG_88EU_P2P
		rtw_init_wifidirect_addrs(padapter, padapter->eeprompriv.mac_addr,
		padapter->eeprompriv.mac_addr);
		#endif
		memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
		DBG_88E("MAC Address from pnetdev->dev_addr = %pM\n",
		pnetdev->dev_addr);

		/* step 6. Tell the network stack we exist */
		if (register_netdev(pnetdev) != 0) {
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("register_netdev() failed\n"));
		goto free_hal_data;
		}

		DBG_88E("bDriverStopped:%d, bSurpriseRemoved:%d, bup:%d, hw_init_completed:%d\n"
		, padapter->bDriverStopped
		, padapter->bSurpriseRemoved
		, padapter->bup
		, padapter->hw_init_completed
		);

		status = _SUCCESS;

		free_hal_data:
		if (status != _SUCCESS && padapter->HalData)
		kfree(padapter->HalData);
		handle_dualmac:
		if (status != _SUCCESS)
		rtw_handle_dualmac(padapter, 0);
		free_adapter:
		if (status != _SUCCESS) {
		if (pnetdev)
		rtw_free_netdev(pnetdev);
		else if (padapter)
		rtw_vmfree((u8 )padapter, sizeof(padapter));
		padapter = NULL;
		}
		exit:
		return padapter;
		}

		static void rtw_usb_if1_deinit(struct adapter *if1)
		{
		struct net_device *pnetdev = if1->pnetdev;
		struct mlme_priv *pmlmepriv = &if1->mlmepriv;

		if (check_fwstate(pmlmepriv, _FW_LINKED))
		rtw_disassoc_cmd(if1, 0, false);

		#ifdef CONFIG_88EU_AP_MODE
		free_mlme_ap_info(if1);
		#endif

		if (if1->DriverState != DRIVER_DISAPPEAR) {
		if (pnetdev) {
		/* will call netdev_close() */
		unregister_netdev(pnetdev);
		rtw_proc_remove_one(pnetdev);
		}
		}
		rtw_cancel_all_timer(if1);

		rtw_dev_unload(if1);
		DBG_88E("+r871xu_dev_remove, hw_init_completed=%d\n",
		if1->hw_init_completed);
		rtw_handle_dualmac(if1, 0);
		rtw_free_drv_sw(if1);
		if (pnetdev)
		rtw_free_netdev(pnetdev);
		}

		static int rtw_drv_init(struct usb_interface pusb_intf, const struct usb_device_id pdid)
		{
		struct adapter *if1 = NULL;
		int status;
		struct dvobj_priv *dvobj;

		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_drv_init\n"));

		/* step 0. */
		process_spec_devid(pdid);

		/* Initialize dvobj_priv */
		dvobj = usb_dvobj_init(pusb_intf);
		if (dvobj == NULL) {
		RT_TRACE(_module_hci_intfs_c_, _drv_err_,
		("initialize device object priv Failed!\n"));
		goto exit;
		}

		if1 = rtw_usb_if1_init(dvobj, pusb_intf, pdid);
		if (if1 == NULL) {
		DBG_88E("rtw_init_primarystruct adapter Failed!\n");
		goto free_dvobj;
		}

		if (ui_pid[1] != 0) {
		DBG_88E("ui_pid[1]:%d\n", ui_pid[1]);
		rtw_signal_process(ui_pid[1], SIGUSR2);
		}

		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-871x_drv - drv_init, success!\n"));

		status = _SUCCESS;

		if (status != _SUCCESS && if1)
		rtw_usb_if1_deinit(if1);
		free_dvobj:
		if (status != _SUCCESS)
		usb_dvobj_deinit(pusb_intf);
		exit:
		return status == _SUCCESS ? 0 : -ENODEV;
		}

		/*
		* dev_remove() - our device is being removed
		*/
		/* rmmod module & unplug(SurpriseRemoved) will call r871xu_dev_remove() => how to recognize both */
		static void rtw_dev_remove(struct usb_interface *pusb_intf)
		{
		struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
		struct adapter *padapter = dvobj->if1;

		_func_enter_;

		DBG_88E("+rtw_dev_remove\n");
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+dev_remove()\n"));

		if (usb_drv->drv_registered)
		padapter->bSurpriseRemoved = true;

		rtw_pm_set_ips(padapter, IPS_NONE);
		rtw_pm_set_lps(padapter, PS_MODE_ACTIVE);

		LeaveAllPowerSaveMode(padapter);

		rtw_usb_if1_deinit(padapter);

		usb_dvobj_deinit(pusb_intf);

		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("-dev_remove()\n"));
		DBG_88E("-r871xu_dev_remove, done\n");
		_func_exit_;

		return;
		}

		static int __init rtw_drv_entry(void)
		{
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_drv_entry\n"));

		DBG_88E(DRV_NAME " driver version=%s\n", DRIVERVERSION);
		DBG_88E("build time: %s %s\n", __DATE__, __TIME__);

		rtw_suspend_lock_init();

		_rtw_mutex_init(&usb_drv->hw_init_mutex);

		usb_drv->drv_registered = true;
		return usb_register(&usb_drv->usbdrv);
		}

		static void __exit rtw_drv_halt(void)
		{
		RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("+rtw_drv_halt\n"));
		DBG_88E("+rtw_drv_halt\n");

		rtw_suspend_lock_uninit();

		usb_drv->drv_registered = false;
		usb_deregister(&usb_drv->usbdrv);

		_rtw_mutex_free(&usb_drv->hw_init_mutex);
		DBG_88E("-rtw_drv_halt\n");
		}

		module_init(rtw_drv_entry);
		module_exit(rtw_drv_halt);

drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c

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drivers/staging/rtl8188eu/os_dep/xmit_linux.c

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