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rtl8188eu/hal/usb_ops_linux.c
Larry Finger 19db43ecbd rtl8188eu: Backport kernel version 
This driver was added to the kernel with version 3.12. The changes in that
version are now brought back to the GitHub repo. Essentually all of the code
is updated.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
2013-10-19 12:45:47 -05:00

752 lines
22 KiB
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_OPS_OS_C_
#include <osdep_service.h>
#include <drv_types.h>
#include <osdep_intf.h>
#include <usb_ops.h>
#include <recv_osdep.h>
#include <rtl8188e_hal.h>
static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u8 request, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
{
struct adapter *adapt = pintfhdl->padapter;
struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
struct usb_device *udev = dvobjpriv->pusbdev;
unsigned int pipe;
int status = 0;
u8 reqtype;
u8 *pIo_buf;
int vendorreq_times = 0;
if ((adapt->bSurpriseRemoved) || (adapt->pwrctrlpriv.pnp_bstop_trx)) {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usbctrl_vendorreq:(adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n"));
status = -EPERM;
goto exit;
}
if (len > MAX_VENDOR_REQ_CMD_SIZE) {
DBG_88E("[%s] Buffer len error ,vendor request failed\n", __func__);
status = -EINVAL;
goto exit;
}
_enter_critical_mutex(&dvobjpriv->usb_vendor_req_mutex, NULL);
/* Acquire IO memory for vendorreq */
pIo_buf = dvobjpriv->usb_vendor_req_buf;
if (pIo_buf == NULL) {
DBG_88E("[%s] pIo_buf == NULL\n", __func__);
status = -ENOMEM;
goto release_mutex;
}
while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
_rtw_memset(pIo_buf, 0, len);
if (requesttype == 0x01) {
pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
reqtype = REALTEK_USB_VENQT_READ;
} else {
pipe = usb_sndctrlpipe(udev, 0);/* write_out */
reqtype = REALTEK_USB_VENQT_WRITE;
memcpy(pIo_buf, pdata, len);
}
status = rtw_usb_control_msg(udev, pipe, request, reqtype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
if (status == len) { /* Success this control transfer. */
rtw_reset_continual_urb_error(dvobjpriv);
if (requesttype == 0x01)
memcpy(pdata, pIo_buf, len);
} else { /* error cases */
DBG_88E("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n",
value, (requesttype == 0x01) ? "read" : "write",
len, status, *(u32 *)pdata, vendorreq_times);
if (status < 0) {
if (status == (-ESHUTDOWN) || status == -ENODEV) {
adapt->bSurpriseRemoved = true;
} else {
struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
haldata->srestpriv.Wifi_Error_Status = USB_VEN_REQ_CMD_FAIL;
}
} else { /* status != len && status >= 0 */
if (status > 0) {
if (requesttype == 0x01) {
/* For Control read transfer, we have to copy the read data from pIo_buf to pdata. */
memcpy(pdata, pIo_buf, len);
}
}
}
if (rtw_inc_and_chk_continual_urb_error(dvobjpriv)) {
adapt->bSurpriseRemoved = true;
break;
}
}
/* firmware download is checksumed, don't retry */
if ((value >= FW_8188E_START_ADDRESS && value <= FW_8188E_END_ADDRESS) || status == len)
break;
}
release_mutex:
_exit_critical_mutex(&dvobjpriv->usb_vendor_req_mutex, NULL);
exit:
return status;
}
static u8 usb_read8(struct intf_hdl *pintfhdl, u32 addr)
{
u8 request;
u8 requesttype;
u16 wvalue;
u16 index;
u16 len;
u8 data = 0;
_func_enter_;
request = 0x05;
requesttype = 0x01;/* read_in */
index = 0;/* n/a */
wvalue = (u16)(addr&0x0000ffff);
len = 1;
usbctrl_vendorreq(pintfhdl, request, wvalue, index, &data, len, requesttype);
_func_exit_;
return data;
}
static u16 usb_read16(struct intf_hdl *pintfhdl, u32 addr)
{
u8 request;
u8 requesttype;
u16 wvalue;
u16 index;
u16 len;
__le32 data;
_func_enter_;
request = 0x05;
requesttype = 0x01;/* read_in */
index = 0;/* n/a */
wvalue = (u16)(addr&0x0000ffff);
len = 2;
usbctrl_vendorreq(pintfhdl, request, wvalue, index, &data, len, requesttype);
_func_exit_;
return (u16)(le32_to_cpu(data)&0xffff);
}
static u32 usb_read32(struct intf_hdl *pintfhdl, u32 addr)
{
u8 request;
u8 requesttype;
u16 wvalue;
u16 index;
u16 len;
__le32 data;
_func_enter_;
request = 0x05;
requesttype = 0x01;/* read_in */
index = 0;/* n/a */
wvalue = (u16)(addr&0x0000ffff);
len = 4;
usbctrl_vendorreq(pintfhdl, request, wvalue, index, &data, len, requesttype);
_func_exit_;
return le32_to_cpu(data);
}
static int usb_write8(struct intf_hdl *pintfhdl, u32 addr, u8 val)
{
u8 request;
u8 requesttype;
u16 wvalue;
u16 index;
u16 len;
u8 data;
int ret;
_func_enter_;
request = 0x05;
requesttype = 0x00;/* write_out */
index = 0;/* n/a */
wvalue = (u16)(addr&0x0000ffff);
len = 1;
data = val;
ret = usbctrl_vendorreq(pintfhdl, request, wvalue, index, &data, len, requesttype);
_func_exit_;
return ret;
}
static int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val)
{
u8 request;
u8 requesttype;
u16 wvalue;
u16 index;
u16 len;
__le32 data;
int ret;
_func_enter_;
request = 0x05;
requesttype = 0x00;/* write_out */
index = 0;/* n/a */
wvalue = (u16)(addr&0x0000ffff);
len = 2;
data = cpu_to_le32(val & 0x0000ffff);
ret = usbctrl_vendorreq(pintfhdl, request, wvalue, index, &data, len, requesttype);
_func_exit_;
return ret;
}
static int usb_write32(struct intf_hdl *pintfhdl, u32 addr, u32 val)
{
u8 request;
u8 requesttype;
u16 wvalue;
u16 index;
u16 len;
__le32 data;
int ret;
_func_enter_;
request = 0x05;
requesttype = 0x00;/* write_out */
index = 0;/* n/a */
wvalue = (u16)(addr&0x0000ffff);
len = 4;
data = cpu_to_le32(val);
ret = usbctrl_vendorreq(pintfhdl, request, wvalue, index, &data, len, requesttype);
_func_exit_;
return ret;
}
static int usb_writeN(struct intf_hdl *pintfhdl, u32 addr, u32 length, u8 *pdata)
{
struct adapter *adapt = pintfhdl->padapter;
struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
struct usb_device *udev = dvobjpriv->pusbdev;
u8 request = REALTEK_USB_VENQT_CMD_REQ;
u8 reqtype = REALTEK_USB_VENQT_WRITE;
u16 value = (u16)(addr & 0x0000ffff);
u16 index = REALTEK_USB_VENQT_CMD_IDX;
int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
u8 *buffer;
int ret;
int vendorreq_times = 0;
buffer = kmemdup(pdata, length, GFP_ATOMIC);
if (!buffer)
return -ENOMEM;
while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
pipe = usb_sndctrlpipe(udev, 0);/* write_out */
ret = rtw_usb_control_msg(udev, pipe, request, reqtype,
value, index, buffer, length,
RTW_USB_CONTROL_MSG_TIMEOUT);
if (ret == length) { /* Success this control transfer. */
rtw_reset_continual_urb_error(dvobjpriv);
} else { /* error cases */
DBG_88E("reg 0x%x, usb %u write fail, status:%d value=0x%x, vendorreq_times:%d\n",
value, length, ret, *(u32 *)pdata, vendorreq_times);
if (ret < 0) {
if (ret == (-ESHUTDOWN) || ret == -ENODEV) {
adapt->bSurpriseRemoved = true;
} else {
struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
haldata->srestpriv.Wifi_Error_Status = USB_VEN_REQ_CMD_FAIL;
}
}
if (rtw_inc_and_chk_continual_urb_error(dvobjpriv)) {
adapt->bSurpriseRemoved = true;
break;
}
}
/* firmware download is checksumed, don't retry */
if ((value >= FW_8188E_START_ADDRESS &&
value <= FW_8188E_END_ADDRESS) || ret == length)
break;
}
kfree(buffer);
return ret;
}
static void interrupt_handler_8188eu(struct adapter *adapt, u16 pkt_len, u8 *pbuf)
{
struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
if (pkt_len != INTERRUPT_MSG_FORMAT_LEN) {
DBG_88E("%s Invalid interrupt content length (%d)!\n", __func__, pkt_len);
return;
}
/* HISR */
memcpy(&(haldata->IntArray[0]), &(pbuf[USB_INTR_CONTENT_HISR_OFFSET]), 4);
memcpy(&(haldata->IntArray[1]), &(pbuf[USB_INTR_CONTENT_HISRE_OFFSET]), 4);
/* C2H Event */
if (pbuf[0] != 0)
memcpy(&(haldata->C2hArray[0]), &(pbuf[USB_INTR_CONTENT_C2H_OFFSET]), 16);
}
static int recvbuf2recvframe(struct adapter *adapt, struct sk_buff *pskb)
{
u8 *pbuf;
u8 shift_sz = 0;
u16 pkt_cnt;
u32 pkt_offset, skb_len, alloc_sz;
s32 transfer_len;
struct recv_stat *prxstat;
struct phy_stat *pphy_status = NULL;
struct sk_buff *pkt_copy = NULL;
union recv_frame *precvframe = NULL;
struct rx_pkt_attrib *pattrib = NULL;
struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
struct recv_priv *precvpriv = &adapt->recvpriv;
struct __queue *pfree_recv_queue = &precvpriv->free_recv_queue;
transfer_len = (s32)pskb->len;
pbuf = pskb->data;
prxstat = (struct recv_stat *)pbuf;
pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
do {
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
("recvbuf2recvframe: rxdesc=offsset 0:0x%08x, 4:0x%08x, 8:0x%08x, C:0x%08x\n",
prxstat->rxdw0, prxstat->rxdw1, prxstat->rxdw2, prxstat->rxdw4));
prxstat = (struct recv_stat *)pbuf;
precvframe = rtw_alloc_recvframe(pfree_recv_queue);
if (precvframe == NULL) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvbuf2recvframe: precvframe==NULL\n"));
DBG_88E("%s()-%d: rtw_alloc_recvframe() failed! RX Drop!\n", __func__, __LINE__);
goto _exit_recvbuf2recvframe;
}
_rtw_init_listhead(&precvframe->u.hdr.list);
precvframe->u.hdr.precvbuf = NULL; /* can't access the precvbuf for new arch. */
precvframe->u.hdr.len = 0;
update_recvframe_attrib_88e(precvframe, prxstat);
pattrib = &precvframe->u.hdr.attrib;
if ((pattrib->crc_err) || (pattrib->icv_err)) {
DBG_88E("%s: RX Warning! crc_err=%d icv_err=%d, skip!\n", __func__, pattrib->crc_err, pattrib->icv_err);
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
if ((pattrib->physt) && (pattrib->pkt_rpt_type == NORMAL_RX))
pphy_status = (struct phy_stat *)(pbuf + RXDESC_OFFSET);
pkt_offset = RXDESC_SIZE + pattrib->drvinfo_sz + pattrib->shift_sz + pattrib->pkt_len;
if ((pattrib->pkt_len <= 0) || (pkt_offset > transfer_len)) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recvbuf2recvframe: pkt_len<=0\n"));
DBG_88E("%s()-%d: RX Warning!,pkt_len<=0 or pkt_offset> transfoer_len\n", __func__, __LINE__);
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
/* Modified by Albert 20101213 */
/* For 8 bytes IP header alignment. */
if (pattrib->qos) /* Qos data, wireless lan header length is 26 */
shift_sz = 6;
else
shift_sz = 0;
skb_len = pattrib->pkt_len;
/* for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */
/* modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */
if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
if (skb_len <= 1650)
alloc_sz = 1664;
else
alloc_sz = skb_len + 14;
} else {
alloc_sz = skb_len;
/* 6 is for IP header 8 bytes alignment in QoS packet case. */
/* 8 is for skb->data 4 bytes alignment. */
alloc_sz += 14;
}
pkt_copy = netdev_alloc_skb(adapt->pnetdev, alloc_sz);
if (pkt_copy) {
pkt_copy->dev = adapt->pnetdev;
precvframe->u.hdr.pkt = pkt_copy;
precvframe->u.hdr.rx_head = pkt_copy->data;
precvframe->u.hdr.rx_end = pkt_copy->data + alloc_sz;
skb_reserve(pkt_copy, 8 - ((size_t)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */
skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */
memcpy(pkt_copy->data, (pbuf + pattrib->drvinfo_sz + RXDESC_SIZE), skb_len);
precvframe->u.hdr.rx_tail = pkt_copy->data;
precvframe->u.hdr.rx_data = pkt_copy->data;
} else {
if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
DBG_88E("recvbuf2recvframe: alloc_skb fail , drop frag frame\n");
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
precvframe->u.hdr.pkt = skb_clone(pskb, GFP_ATOMIC);
if (precvframe->u.hdr.pkt) {
precvframe->u.hdr.rx_tail = pbuf + pattrib->drvinfo_sz + RXDESC_SIZE;
precvframe->u.hdr.rx_head = precvframe->u.hdr.rx_tail;
precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail;
precvframe->u.hdr.rx_end = pbuf + pattrib->drvinfo_sz + RXDESC_SIZE + alloc_sz;
} else {
DBG_88E("recvbuf2recvframe: skb_clone fail\n");
rtw_free_recvframe(precvframe, pfree_recv_queue);
goto _exit_recvbuf2recvframe;
}
}
recvframe_put(precvframe, skb_len);
switch (haldata->UsbRxAggMode) {
case USB_RX_AGG_DMA:
case USB_RX_AGG_MIX:
pkt_offset = (u16)_RND128(pkt_offset);
break;
case USB_RX_AGG_USB:
pkt_offset = (u16)_RND4(pkt_offset);
break;
case USB_RX_AGG_DISABLE:
default:
break;
}
if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */
if (pattrib->physt)
update_recvframe_phyinfo_88e(precvframe, (struct phy_stat *)pphy_status);
if (rtw_recv_entry(precvframe) != _SUCCESS) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
("recvbuf2recvframe: rtw_recv_entry(precvframe) != _SUCCESS\n"));
}
} else {
/* enqueue recvframe to txrtp queue */
if (pattrib->pkt_rpt_type == TX_REPORT1) {
/* CCX-TXRPT ack for xmit mgmt frames. */
handle_txrpt_ccx_88e(adapt, precvframe->u.hdr.rx_data);
} else if (pattrib->pkt_rpt_type == TX_REPORT2) {
ODM_RA_TxRPT2Handle_8188E(
&haldata->odmpriv,
precvframe->u.hdr.rx_data,
pattrib->pkt_len,
pattrib->MacIDValidEntry[0],
pattrib->MacIDValidEntry[1]
);
} else if (pattrib->pkt_rpt_type == HIS_REPORT) {
interrupt_handler_8188eu(adapt, pattrib->pkt_len, precvframe->u.hdr.rx_data);
}
rtw_free_recvframe(precvframe, pfree_recv_queue);
}
pkt_cnt--;
transfer_len -= pkt_offset;
pbuf += pkt_offset;
precvframe = NULL;
pkt_copy = NULL;
if (transfer_len > 0 && pkt_cnt == 0)
pkt_cnt = (le32_to_cpu(prxstat->rxdw2)>>16) & 0xff;
} while ((transfer_len > 0) && (pkt_cnt > 0));
_exit_recvbuf2recvframe:
return _SUCCESS;
}
void rtl8188eu_recv_tasklet(void *priv)
{
struct sk_buff *pskb;
struct adapter *adapt = (struct adapter *)priv;
struct recv_priv *precvpriv = &adapt->recvpriv;
while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
if ((adapt->bDriverStopped) || (adapt->bSurpriseRemoved)) {
DBG_88E("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
dev_kfree_skb_any(pskb);
break;
}
recvbuf2recvframe(adapt, pskb);
skb_reset_tail_pointer(pskb);
pskb->len = 0;
skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
}
}
static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
{
struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
struct adapter *adapt = (struct adapter *)precvbuf->adapter;
struct recv_priv *precvpriv = &adapt->recvpriv;
RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete!!!\n"));
precvpriv->rx_pending_cnt--;
if (adapt->bSurpriseRemoved || adapt->bDriverStopped || adapt->bReadPortCancel) {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
("usb_read_port_complete:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n",
adapt->bDriverStopped, adapt->bSurpriseRemoved));
precvbuf->reuse = true;
DBG_88E("%s() RX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
__func__, adapt->bDriverStopped,
adapt->bSurpriseRemoved, adapt->bReadPortCancel);
goto exit;
}
if (purb->status == 0) { /* SUCCESS */
if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
("usb_read_port_complete: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n"));
precvbuf->reuse = true;
rtw_read_port(adapt, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
DBG_88E("%s()-%d: RX Warning!\n", __func__, __LINE__);
} else {
rtw_reset_continual_urb_error(adapter_to_dvobj(adapt));
precvbuf->transfer_len = purb->actual_length;
skb_put(precvbuf->pskb, purb->actual_length);
skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
if (skb_queue_len(&precvpriv->rx_skb_queue) <= 1)
tasklet_schedule(&precvpriv->recv_tasklet);
precvbuf->pskb = NULL;
precvbuf->reuse = false;
rtw_read_port(adapt, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
}
} else {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete : purb->status(%d) != 0\n", purb->status));
DBG_88E("###=> usb_read_port_complete => urb status(%d)\n", purb->status);
if (rtw_inc_and_chk_continual_urb_error(adapter_to_dvobj(adapt)))
adapt->bSurpriseRemoved = true;
switch (purb->status) {
case -EINVAL:
case -EPIPE:
case -ENODEV:
case -ESHUTDOWN:
RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bSurpriseRemoved=true\n"));
case -ENOENT:
adapt->bDriverStopped = true;
RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bDriverStopped=true\n"));
break;
case -EPROTO:
case -EOVERFLOW:
{
struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
haldata->srestpriv.Wifi_Error_Status = USB_READ_PORT_FAIL;
}
precvbuf->reuse = true;
rtw_read_port(adapt, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
break;
case -EINPROGRESS:
DBG_88E("ERROR: URB IS IN PROGRESS!/n");
break;
default:
break;
}
}
exit:
_func_exit_;
}
static u32 usb_read_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *rmem)
{
struct urb *purb = NULL;
struct recv_buf *precvbuf = (struct recv_buf *)rmem;
struct adapter *adapter = pintfhdl->padapter;
struct dvobj_priv *pdvobj = adapter_to_dvobj(adapter);
struct recv_priv *precvpriv = &adapter->recvpriv;
struct usb_device *pusbd = pdvobj->pusbdev;
int err;
unsigned int pipe;
size_t tmpaddr = 0;
size_t alignment = 0;
u32 ret = _SUCCESS;
_func_enter_;
if (adapter->bDriverStopped || adapter->bSurpriseRemoved ||
adapter->pwrctrlpriv.pnp_bstop_trx) {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
("usb_read_port:(adapt->bDriverStopped ||adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n"));
return _FAIL;
}
if ((!precvbuf->reuse) || (precvbuf->pskb == NULL)) {
precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue);
if (NULL != precvbuf->pskb)
precvbuf->reuse = true;
}
if (precvbuf != NULL) {
rtl8188eu_init_recvbuf(adapter, precvbuf);
/* re-assign for linux based on skb */
if ((!precvbuf->reuse) || (precvbuf->pskb == NULL)) {
precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ);
if (precvbuf->pskb == NULL) {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("init_recvbuf(): alloc_skb fail!\n"));
DBG_88E("#### usb_read_port() alloc_skb fail!#####\n");
return _FAIL;
}
tmpaddr = (size_t)precvbuf->pskb->data;
alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment));
precvbuf->phead = precvbuf->pskb->head;
precvbuf->pdata = precvbuf->pskb->data;
precvbuf->ptail = skb_tail_pointer(precvbuf->pskb);
precvbuf->pend = skb_end_pointer(precvbuf->pskb);
precvbuf->pbuf = precvbuf->pskb->data;
} else { /* reuse skb */
precvbuf->phead = precvbuf->pskb->head;
precvbuf->pdata = precvbuf->pskb->data;
precvbuf->ptail = skb_tail_pointer(precvbuf->pskb);
precvbuf->pend = skb_end_pointer(precvbuf->pskb);
precvbuf->pbuf = precvbuf->pskb->data;
precvbuf->reuse = false;
}
precvpriv->rx_pending_cnt++;
purb = precvbuf->purb;
/* translate DMA FIFO addr to pipehandle */
pipe = ffaddr2pipehdl(pdvobj, addr);
usb_fill_bulk_urb(purb, pusbd, pipe,
precvbuf->pbuf,
MAX_RECVBUF_SZ,
usb_read_port_complete,
precvbuf);/* context is precvbuf */
err = usb_submit_urb(purb, GFP_ATOMIC);
if ((err) && (err != (-EPERM))) {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
("cannot submit rx in-token(err=0x%.8x), URB_STATUS =0x%.8x",
err, purb->status));
DBG_88E("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n",
err, purb->status);
ret = _FAIL;
}
} else {
RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
("usb_read_port:precvbuf ==NULL\n"));
ret = _FAIL;
}
_func_exit_;
return ret;
}
void rtl8188eu_xmit_tasklet(void *priv)
{
int ret = false;
struct adapter *adapt = (struct adapter *)priv;
struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
if (check_fwstate(&adapt->mlmepriv, _FW_UNDER_SURVEY))
return;
while (1) {
if ((adapt->bDriverStopped) ||
(adapt->bSurpriseRemoved) ||
(adapt->bWritePortCancel)) {
DBG_88E("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n");
break;
}
ret = rtl8188eu_xmitframe_complete(adapt, pxmitpriv, NULL);
if (!ret)
break;
}
}
void rtl8188eu_set_intf_ops(struct _io_ops *pops)
{
_func_enter_;
_rtw_memset((u8 *)pops, 0, sizeof(struct _io_ops));
pops->_read8 = &usb_read8;
pops->_read16 = &usb_read16;
pops->_read32 = &usb_read32;
pops->_read_mem = &usb_read_mem;
pops->_read_port = &usb_read_port;
pops->_write8 = &usb_write8;
pops->_write16 = &usb_write16;
pops->_write32 = &usb_write32;
pops->_writeN = &usb_writeN;
pops->_write_mem = &usb_write_mem;
pops->_write_port = &usb_write_port;
pops->_read_port_cancel = &usb_read_port_cancel;
pops->_write_port_cancel = &usb_write_port_cancel;
_func_exit_;
}
void rtl8188eu_set_hw_type(struct adapter *adapt)
{
adapt->chip_type = RTL8188E;
adapt->HardwareType = HARDWARE_TYPE_RTL8188EU;
DBG_88E("CHIP TYPE: RTL8188E\n");
}
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