https://github.com/torvalds/linux
Tip revision: 7d2a07b769330c34b4deabeed939325c77a7ec2f authored by Linus Torvalds on 29 August 2021, 22:04:50 UTC
Linux 5.14
Linux 5.14
Tip revision: 7d2a07b
usb_intf.c
// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
******************************************************************************/
#define pr_fmt(fmt) "R8188EU: " fmt
#include <osdep_service.h>
#include <drv_types.h>
#include <recv_osdep.h>
#include <xmit_osdep.h>
#include <hal_intf.h>
#include <linux/usb.h>
#include <linux/vmalloc.h>
#include <mon.h>
#include <osdep_intf.h>
#include <usb_ops_linux.h>
#include <rtw_ioctl.h>
#include "rtl8188e_hal.h"
#define USB_VENDER_ID_REALTEK 0x0bda
/* DID_USB_v916_20130116 */
static const 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(0x056e, 0x4008)}, /* Elecom WDC-150SU2M */
{USB_DEVICE(0x07b8, 0x8179)}, /* Abocom - Abocom */
{USB_DEVICE(0x0B05, 0x18F0)}, /* ASUS USB-N10 Nano B1 */
{USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
{USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
{USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
{USB_DEVICE(0x2001, 0x331B)}, /* D-Link DWA-121 rev B1 */
{USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
{USB_DEVICE(0x2357, 0x0111)}, /* TP-Link TL-WN727N v5.21 */
{USB_DEVICE(0x2C4E, 0x0102)}, /* MERCUSYS MW150US v2 */
{USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
{USB_DEVICE(0x7392, 0xb811)}, /* Edimax EW-7811UN V2 */
{USB_DEVICE(USB_VENDER_ID_REALTEK, 0xffef)}, /* Rosewill RNX-N150NUB */
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, rtw_usb_id_tbl);
static int usb_dvobj_init(struct usb_interface *usb_intf)
{
int i;
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_endpoint_descriptor *pendp_desc;
struct usb_device *pusbd;
pdvobjpriv = kzalloc(sizeof(*pdvobjpriv), GFP_KERNEL);
if (!pdvobjpriv)
return -ENOMEM;
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->cur_altsetting;
piface_desc = &phost_iface->desc;
pdvobjpriv->NumInterfaces = pconf_desc->bNumInterfaces;
pdvobjpriv->InterfaceNumber = piface_desc->bInterfaceNumber;
for (i = 0; i < piface_desc->bNumEndpoints; i++) {
int ep_num;
pendp_desc = &phost_iface->endpoint[i].desc;
ep_num = usb_endpoint_num(pendp_desc);
if (usb_endpoint_is_bulk_in(pendp_desc)) {
pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = ep_num;
pdvobjpriv->RtNumInPipes++;
} else if (usb_endpoint_is_int_in(pendp_desc)) {
pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] = ep_num;
pdvobjpriv->RtNumInPipes++;
} else if (usb_endpoint_is_bulk_out(pendp_desc)) {
pdvobjpriv->RtOutPipe[pdvobjpriv->RtNumOutPipes] =
ep_num;
pdvobjpriv->RtNumOutPipes++;
}
}
if (pusbd->speed == USB_SPEED_HIGH)
pdvobjpriv->ishighspeed = true;
else
pdvobjpriv->ishighspeed = false;
mutex_init(&pdvobjpriv->usb_vendor_req_mutex);
usb_get_dev(pusbd);
return 0;
}
static void usb_dvobj_deinit(struct usb_interface *usb_intf)
{
struct dvobj_priv *dvobj = usb_get_intfdata(usb_intf);
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.
*/
pr_debug("usb attached..., try to reset usb device\n");
usb_reset_device(interface_to_usbdev(usb_intf));
}
}
mutex_destroy(&dvobj->usb_vendor_req_mutex);
kfree(dvobj);
}
usb_put_dev(interface_to_usbdev(usb_intf));
}
void usb_intf_stop(struct adapter *padapter)
{
/* cancel in irp */
rtw_hal_inirp_deinit(padapter);
/* cancel out irp */
usb_write_port_cancel(padapter);
/* todo:cancel other irps */
}
static void rtw_dev_unload(struct adapter *padapter)
{
if (padapter->bup) {
pr_debug("===> %s\n", __func__);
padapter->bDriverStopped = true;
if (padapter->xmitpriv.ack_tx)
rtw_ack_tx_done(&padapter->xmitpriv, RTW_SCTX_DONE_DRV_STOP);
/* s3. */
usb_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;
}
pr_debug("<=== %s\n", __func__);
}
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;
unsigned long start_time = jiffies;
pr_debug("==> %s (%s:%d)\n", __func__, current->comm, current->pid);
if ((!padapter->bup) || (padapter->bDriverStopped) ||
(padapter->bSurpriseRemoved)) {
pr_debug("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);
mutex_lock(&pwrpriv->mutex_lock);
/* s1. */
if (pnetdev) {
netif_carrier_off(pnetdev);
netif_tx_stop_all_queues(pnetdev);
}
/* s2. */
rtw_disassoc_cmd(padapter, 0, false);
if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) &&
check_fwstate(pmlmepriv, _FW_LINKED)) {
pr_debug("%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.ssid_length,
pmlmepriv->assoc_ssid.ssid_length);
pmlmepriv->to_roaming = 1;
}
/* s2-2. indicate disconnect to os */
rtw_indicate_disconnect(padapter);
/* s2-3. */
rtw_free_assoc_resources(padapter);
/* s2-4. */
rtw_free_network_queue(padapter, true);
rtw_dev_unload(padapter);
mutex_unlock(&pwrpriv->mutex_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:
pr_debug("<=== %s .............. in %dms\n", __func__,
jiffies_to_msecs(jiffies - start_time));
return 0;
}
static int rtw_resume_process(struct adapter *padapter)
{
struct net_device *pnetdev;
struct pwrctrl_priv *pwrpriv = NULL;
int ret = -1;
unsigned long start_time = jiffies;
pr_debug("==> %s (%s:%d)\n", __func__, current->comm, current->pid);
if (padapter) {
pnetdev = padapter->pnetdev;
pwrpriv = &padapter->pwrctrlpriv;
} else {
goto exit;
}
mutex_lock(&pwrpriv->mutex_lock);
rtw_reset_drv_sw(padapter);
pwrpriv->bkeepfwalive = false;
pr_debug("bkeepfwalive(%x)\n", pwrpriv->bkeepfwalive);
if (netdev_open(pnetdev) != 0) {
mutex_unlock(&pwrpriv->mutex_lock);
goto exit;
}
netif_device_attach(pnetdev);
netif_carrier_on(pnetdev);
mutex_unlock(&pwrpriv->mutex_lock);
rtw_roaming(padapter, NULL);
ret = 0;
exit:
if (pwrpriv)
pwrpriv->bInSuspend = false;
pr_debug("<=== %s return %d.............. in %dms\n", __func__,
ret, jiffies_to_msecs(jiffies - start_time));
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;
return rtw_resume_process(padapter);
}
/*
* 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 int rtw_usb_if1_init(struct usb_interface *pusb_intf)
{
struct dvobj_priv *dvobj = usb_get_intfdata(pusb_intf);
struct adapter *padapter;
struct net_device *pnetdev;
struct net_device *pmondev;
int err = 0;
pnetdev = rtw_init_netdev();
if (!pnetdev)
return -ENOMEM;
SET_NETDEV_DEV(pnetdev, dvobj_to_dev(dvobj));
padapter = netdev_priv(pnetdev);
padapter->dvobj = dvobj;
dvobj->if1 = padapter;
padapter->bDriverStopped = true;
mutex_init(&padapter->hw_init_mutex);
if (padapter->registrypriv.monitor_enable) {
pmondev = rtl88eu_mon_init();
if (!pmondev)
netdev_warn(pnetdev, "Failed to initialize monitor interface");
padapter->pmondev = pmondev;
}
padapter->HalData = kzalloc(sizeof(struct hal_data_8188e), GFP_KERNEL);
if (!padapter->HalData) {
err = -ENOMEM;
goto free_adapter;
}
/* 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) {
err = -ENOMEM;
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);
pr_debug("\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)
pr_debug("can't get autopm:\n");
/* alloc dev name after read efuse. */
err = dev_alloc_name(pnetdev, padapter->registrypriv.ifname);
if (err < 0)
goto free_hal_data;
netif_carrier_off(pnetdev);
rtw_macaddr_cfg(padapter->eeprompriv.mac_addr);
memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
pr_debug("MAC Address from pnetdev->dev_addr = %pM\n",
pnetdev->dev_addr);
/* step 6. Tell the network stack we exist */
err = register_netdev(pnetdev);
if (err) {
goto free_hal_data;
}
pr_debug("bDriverStopped:%d, bSurpriseRemoved:%d, bup:%d, hw_init_completed:%d\n"
, padapter->bDriverStopped
, padapter->bSurpriseRemoved
, padapter->bup
, padapter->hw_init_completed
);
return 0;
free_hal_data:
kfree(padapter->HalData);
free_adapter:
free_netdev(pnetdev);
return err;
}
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 (pnetdev)
unregister_netdev(pnetdev); /* will call netdev_close() */
rtl88eu_mon_deinit(if1->pmondev);
rtw_cancel_all_timer(if1);
rtw_dev_unload(if1);
pr_debug("+r871xu_dev_remove, hw_init_completed=%d\n",
if1->hw_init_completed);
rtw_free_drv_sw(if1);
if (pnetdev)
free_netdev(pnetdev);
}
static int rtw_drv_init(struct usb_interface *pusb_intf, const struct usb_device_id *pdid)
{
int err;
err = usb_dvobj_init(pusb_intf);
if (err) {
pr_debug("usb_dvobj_init failed\n");
return err;
}
err = rtw_usb_if1_init(pusb_intf);
if (err) {
pr_debug("rtw_usb_if1_init failed\n");
usb_dvobj_deinit(pusb_intf);
return err;
}
return 0;
}
/*
* 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;
pr_debug("+%s\n", __func__);
if (!pusb_intf->unregistering)
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);
pr_debug("-r871xu_dev_remove, done\n");
}
static struct usb_driver rtl8188e_usb_drv = {
.name = "r8188eu",
.probe = rtw_drv_init,
.disconnect = rtw_dev_remove,
.id_table = rtw_usb_id_tbl,
.suspend = rtw_suspend,
.resume = rtw_resume,
.reset_resume = rtw_resume,
};
module_usb_driver(rtl8188e_usb_drv)