diff options
Diffstat (limited to 'drivers/staging/r8188eu/hal/usb_ops_linux.c')
-rw-r--r-- | drivers/staging/r8188eu/hal/usb_ops_linux.c | 562 |
1 files changed, 562 insertions, 0 deletions
diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c new file mode 100644 index 000000000000..0cf69033c529 --- /dev/null +++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c @@ -0,0 +1,562 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2007 - 2011 Realtek Corporation. */ + +#include "../include/osdep_service.h" +#include "../include/drv_types.h" +#include "../include/osdep_intf.h" +#include "../include/usb_ops.h" +#include "../include/recv_osdep.h" +#include "../include/rtl8188e_hal.h" + +static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, 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 *pIo_buf; + int vendorreq_times = 0; + + if ((adapt->bSurpriseRemoved) || (adapt->pwrctrlpriv.pnp_bstop_trx)) { + 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) { + DBG_88E("[%s] pIo_buf == NULL\n", __func__); + status = -ENOMEM; + goto release_mutex; + } + + if (requesttype == REALTEK_USB_VENQT_READ) + pipe = usb_rcvctrlpipe(udev, 0);/* read_in */ + else + pipe = usb_sndctrlpipe(udev, 0);/* write_out */ + + while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) { + if (requesttype == REALTEK_USB_VENQT_READ) + memset(pIo_buf, 0, len); + else + memcpy(pIo_buf, pdata, len); + + status = usb_control_msg(udev, pipe, REALTEK_USB_VENQT_CMD_REQ, + requesttype, value, REALTEK_USB_VENQT_CMD_IDX, + pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT); + + if (status == len) { /* Success this control transfer. */ + rtw_reset_continual_urb_error(dvobjpriv); + if (requesttype == REALTEK_USB_VENQT_READ) + 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 == REALTEK_USB_VENQT_READ) ? "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 == REALTEK_USB_VENQT_READ) { + /* 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) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + u8 data; + + usbctrl_vendorreq(pintfhdl, wvalue, &data, 1, REALTEK_USB_VENQT_READ); + + return data; +} + +static u16 usb_read16(struct intf_hdl *pintfhdl, u32 addr) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + __le32 data; + + usbctrl_vendorreq(pintfhdl, wvalue, &data, 2, REALTEK_USB_VENQT_READ); + + return (u16)(le32_to_cpu(data) & 0xffff); +} + +static u32 usb_read32(struct intf_hdl *pintfhdl, u32 addr) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + __le32 data; + + usbctrl_vendorreq(pintfhdl, wvalue, &data, 4, REALTEK_USB_VENQT_READ); + + return le32_to_cpu(data); +} + +static int usb_write8(struct intf_hdl *pintfhdl, u32 addr, u8 val) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + + return usbctrl_vendorreq(pintfhdl, wvalue, &val, 1, REALTEK_USB_VENQT_WRITE); +} + +static int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + __le32 data = cpu_to_le32(val & 0x0000ffff); + + return usbctrl_vendorreq(pintfhdl, wvalue, &data, 2, REALTEK_USB_VENQT_WRITE); +} + +static int usb_write32(struct intf_hdl *pintfhdl, u32 addr, u32 val) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + __le32 data = cpu_to_le32(val); + + return usbctrl_vendorreq(pintfhdl, wvalue, &data, 4, REALTEK_USB_VENQT_WRITE); +} + +static int usb_writeN(struct intf_hdl *pintfhdl, u32 addr, u32 length, u8 *pdata) +{ + u16 wvalue = (u16)(addr & 0x0000ffff); + u8 buf[VENDOR_CMD_MAX_DATA_LEN] = {0}; + + if (length > VENDOR_CMD_MAX_DATA_LEN) + return -EINVAL; + + memcpy(buf, pdata, length); + + return usbctrl_vendorreq(pintfhdl, wvalue, buf, (length & 0xffff), REALTEK_USB_VENQT_WRITE); +} + +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; + struct 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 { + prxstat = (struct recv_stat *)pbuf; + + precvframe = rtw_alloc_recvframe(pfree_recv_queue); + if (!precvframe) { + DBG_88E("%s()-%d: rtw_alloc_recvframe() failed! RX Drop!\n", __func__, __LINE__); + goto _exit_recvbuf2recvframe; + } + + INIT_LIST_HEAD(&precvframe->list); + precvframe->precvbuf = NULL; /* can't access the precvbuf for new arch. */ + precvframe->len = 0; + + update_recvframe_attrib_88e(precvframe, prxstat); + + pattrib = &precvframe->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)) { + 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->pkt = pkt_copy; + precvframe->rx_head = pkt_copy->data; + precvframe->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->rx_tail = pkt_copy->data; + precvframe->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->pkt = skb_clone(pskb, GFP_ATOMIC); + if (precvframe->pkt) { + precvframe->rx_tail = pbuf + pattrib->drvinfo_sz + RXDESC_SIZE; + precvframe->rx_head = precvframe->rx_tail; + precvframe->rx_data = precvframe->rx_tail; + precvframe->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); + rtw_recv_entry(precvframe); + } 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->rx_data); + } else if (pattrib->pkt_rpt_type == TX_REPORT2) { + ODM_RA_TxRPT2Handle_8188E( + &haldata->odmpriv, + precvframe->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->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(unsigned long 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; + + precvpriv->rx_pending_cnt--; + + if (adapt->bSurpriseRemoved || adapt->bDriverStopped || adapt->bReadPortCancel) { + precvbuf->reuse = true; + DBG_88E("%s() RX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bReadPortCancel(%d)\n", + __func__, adapt->bDriverStopped, + adapt->bSurpriseRemoved, adapt->bReadPortCancel); + return; + } + + if (purb->status == 0) { /* SUCCESS */ + if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) { + 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 { + DBG_88E("###=> usb_read_port_complete => urb status(%d)\n", purb->status); + skb_put(precvbuf->pskb, purb->actual_length); + precvbuf->pskb = NULL; + + 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: + case -ENOENT: + adapt->bDriverStopped = true; + 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; + } + } +} + +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; + + if (adapter->bDriverStopped || adapter->bSurpriseRemoved || + adapter->pwrctrlpriv.pnp_bstop_trx) + return _FAIL; + + if (!precvbuf) + return _FAIL; + + if (!precvbuf->reuse || !precvbuf->pskb) { + precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue); + if (precvbuf->pskb) + precvbuf->reuse = true; + } + + rtl8188eu_init_recvbuf(adapter, precvbuf); + + /* re-assign for linux based on skb */ + if (!precvbuf->reuse || !precvbuf->pskb) { + precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ); + if (!precvbuf->pskb) { + 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))) { + DBG_88E("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n", + err, purb->status); + ret = _FAIL; + } + + return ret; +} + +void rtl8188eu_xmit_tasklet(unsigned long 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) +{ + + 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; + +} + +void rtl8188eu_set_hw_type(struct adapter *adapt) +{ + adapt->chip_type = RTL8188E; + adapt->HardwareType = HARDWARE_TYPE_RTL8188EU; + DBG_88E("CHIP TYPE: RTL8188E\n"); +} |