drivers/staging/r8188eu/os_dep/usb_ops_linux.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2007 - 2012 Realtek Corporation. */
   3
   4 #define _USB_OPS_LINUX_C_
   5
   6 #include "../include/drv_types.h"
   7 #include "../include/usb_ops_linux.h"
   8 #include "../include/rtl8188e_recv.h"
   9
  10 unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
  11 {
  12         unsigned int pipe = 0, ep_num = 0;
  13         struct usb_device *pusbd = pdvobj->pusbdev;
  14
  15         if (addr < HW_QUEUE_ENTRY) {
  16                 ep_num = pdvobj->Queue2Pipe[addr];
  17                 pipe = usb_sndbulkpipe(pusbd, ep_num);
  18         }
  19
  20         return pipe;
  21 }
  22
  23 void rtw_read_port_cancel(struct adapter *padapter)
  24 {
  25         int i;
  26         struct recv_buf *precvbuf = (struct recv_buf *)padapter->recvpriv.precv_buf;
  27
  28         padapter->bReadPortCancel = true;
  29
  30         for (i = 0; i < NR_RECVBUFF; i++) {
  31                 precvbuf->reuse = true;
  32                 if (precvbuf->purb)
  33                         usb_kill_urb(precvbuf->purb);
  34                 precvbuf++;
  35         }
  36 }
  37
  38 static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
  39 {
  40         struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
  41         struct adapter  *padapter = pxmitbuf->padapter;
  42         struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
  43
  44         switch (pxmitbuf->flags) {
  45         case VO_QUEUE_INX:
  46                 pxmitpriv->voq_cnt--;
  47                 break;
  48         case VI_QUEUE_INX:
  49                 pxmitpriv->viq_cnt--;
  50                 break;
  51         case BE_QUEUE_INX:
  52                 pxmitpriv->beq_cnt--;
  53                 break;
  54         case BK_QUEUE_INX:
  55                 pxmitpriv->bkq_cnt--;
  56                 break;
  57         case HIGH_QUEUE_INX:
  58                 rtw_chk_hi_queue_cmd(padapter);
  59                 break;
  60         default:
  61                 break;
  62         }
  63
  64         if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
  65             padapter->bWritePortCancel)
  66                 goto check_completion;
  67
  68         if (purb->status) {
  69                 if (purb->status == -EINPROGRESS) {
  70                         goto check_completion;
  71                 } else if (purb->status == -ENOENT) {
  72                         goto check_completion;
  73                 } else if (purb->status == -ECONNRESET) {
  74                         goto check_completion;
  75                 } else if (purb->status == -ESHUTDOWN) {
  76                         padapter->bDriverStopped = true;
  77                         goto check_completion;
  78                 } else if ((purb->status != -EPIPE) && (purb->status != -EPROTO)) {
  79                         padapter->bSurpriseRemoved = true;
  80
  81                         goto check_completion;
  82                 }
  83         }
  84
  85 check_completion:
  86         rtw_sctx_done_err(&pxmitbuf->sctx,
  87                           purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR :
  88                           RTW_SCTX_DONE_SUCCESS);
  89
  90         rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
  91
  92         tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
  93
  94 }
  95
  96 u32 rtw_write_port(struct adapter *padapter, u32 addr, u32 cnt, u8 *wmem)
  97 {
  98         unsigned long irqL;
  99         unsigned int pipe;
 100         int status;
 101         u32 ret = _FAIL;
 102         struct urb *purb = NULL;
 103         struct dvobj_priv       *pdvobj = adapter_to_dvobj(padapter);
 104         struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
 105         struct xmit_buf *pxmitbuf = (struct xmit_buf *)wmem;
 106         struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitbuf->priv_data;
 107         struct usb_device *pusbd = pdvobj->pusbdev;
 108
 109         if (padapter->bDriverStopped || padapter->bSurpriseRemoved) {
 110                 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
 111                 goto exit;
 112         }
 113
 114         spin_lock_irqsave(&pxmitpriv->lock, irqL);
 115
 116         switch (addr) {
 117         case VO_QUEUE_INX:
 118                 pxmitpriv->voq_cnt++;
 119                 pxmitbuf->flags = VO_QUEUE_INX;
 120                 break;
 121         case VI_QUEUE_INX:
 122                 pxmitpriv->viq_cnt++;
 123                 pxmitbuf->flags = VI_QUEUE_INX;
 124                 break;
 125         case BE_QUEUE_INX:
 126                 pxmitpriv->beq_cnt++;
 127                 pxmitbuf->flags = BE_QUEUE_INX;
 128                 break;
 129         case BK_QUEUE_INX:
 130                 pxmitpriv->bkq_cnt++;
 131                 pxmitbuf->flags = BK_QUEUE_INX;
 132                 break;
 133         case HIGH_QUEUE_INX:
 134                 pxmitbuf->flags = HIGH_QUEUE_INX;
 135                 break;
 136         default:
 137                 pxmitbuf->flags = MGT_QUEUE_INX;
 138                 break;
 139         }
 140
 141         spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
 142
 143         purb    = pxmitbuf->pxmit_urb;
 144
 145         /* translate DMA FIFO addr to pipehandle */
 146         pipe = ffaddr2pipehdl(pdvobj, addr);
 147
 148         usb_fill_bulk_urb(purb, pusbd, pipe,
 149                           pxmitframe->buf_addr, /*  pxmitbuf->pbuf */
 150                           cnt,
 151                           usb_write_port_complete,
 152                           pxmitbuf);/* context is pxmitbuf */
 153
 154         status = usb_submit_urb(purb, GFP_ATOMIC);
 155         if (status) {
 156                 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
 157
 158                 switch (status) {
 159                 case -ENODEV:
 160                         padapter->bDriverStopped = true;
 161                         break;
 162                 default:
 163                         break;
 164                 }
 165                 goto exit;
 166         }
 167
 168         ret = _SUCCESS;
 169
 170 /*    We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically. */
 171
 172 exit:
 173         if (ret != _SUCCESS)
 174                 rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
 175
 176         return ret;
 177 }
 178
 179 void rtw_write_port_cancel(struct adapter *padapter)
 180 {
 181         int i;
 182         struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
 183
 184         padapter->bWritePortCancel = true;
 185
 186         for (i = 0; i < NR_XMITBUFF; i++) {
 187                 if (pxmitbuf->pxmit_urb)
 188                         usb_kill_urb(pxmitbuf->pxmit_urb);
 189                 pxmitbuf++;
 190         }
 191
 192         pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
 193         for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
 194                 if (pxmitbuf->pxmit_urb)
 195                         usb_kill_urb(pxmitbuf->pxmit_urb);
 196                 pxmitbuf++;
 197         }
 198 }