drivers/staging/winbond/linux/wb35tx.c

   1 //============================================================================
   2 //  Copyright (c) 1996-2002 Winbond Electronic Corporation
   3 //
   4 //  Module Name:
   5 //    Wb35Tx.c
   6 //
   7 //  Abstract:
   8 //    Processing the Tx message and put into down layer
   9 //
  10 //============================================================================
  11 #include "sysdef.h"
  12
  13
  14 unsigned char
  15 Wb35Tx_get_tx_buffer(phw_data_t pHwData, PUCHAR *pBuffer )
  16 {
  17         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
  18
  19         *pBuffer = pWb35Tx->TxBuffer[0];
  20         return TRUE;
  21 }
  22
  23 void Wb35Tx_start(phw_data_t pHwData)
  24 {
  25         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
  26
  27         // Allow only one thread to run into function
  28         if (OS_ATOMIC_INC(pHwData->Adapter, &pWb35Tx->TxFireCounter) == 1) {
  29                 pWb35Tx->EP4vm_state = VM_RUNNING;
  30                 Wb35Tx(pHwData);
  31         } else
  32                 OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxFireCounter );
  33 }
  34
  35
  36 void Wb35Tx(phw_data_t pHwData)
  37 {
  38         PWB35TX         pWb35Tx = &pHwData->Wb35Tx;
  39         PADAPTER        Adapter = pHwData->Adapter;
  40         PUCHAR          pTxBufferAddress;
  41         PMDS            pMds = &Adapter->Mds;
  42         struct urb *    pUrb = (struct urb *)pWb35Tx->Tx4Urb;
  43         int             retv;
  44         u32             SendIndex;
  45
  46
  47         if (pHwData->SurpriseRemove || pHwData->HwStop)
  48                 goto cleanup;
  49
  50         if (pWb35Tx->tx_halt)
  51                 goto cleanup;
  52
  53         // Ownership checking
  54         SendIndex = pWb35Tx->TxSendIndex;
  55         if (!pMds->TxOwner[SendIndex]) //No more data need to be sent, return immediately
  56                 goto cleanup;
  57
  58         pTxBufferAddress = pWb35Tx->TxBuffer[SendIndex];
  59         //
  60         // Issuing URB
  61         //
  62         usb_fill_bulk_urb(pUrb, pHwData->WbUsb.udev,
  63                           usb_sndbulkpipe(pHwData->WbUsb.udev, 4),
  64                           pTxBufferAddress, pMds->TxBufferSize[ SendIndex ],
  65                           Wb35Tx_complete, pHwData);
  66
  67         pWb35Tx->EP4vm_state = VM_RUNNING;
  68         retv = wb_usb_submit_urb( pUrb );
  69         if (retv<0) {
  70                 printk("EP4 Tx Irp sending error\n");
  71                 goto cleanup;
  72         }
  73
  74         // Check if driver needs issue Irp for EP2
  75         pWb35Tx->TxFillCount += pMds->TxCountInBuffer[SendIndex];
  76         if (pWb35Tx->TxFillCount > 12)
  77                 Wb35Tx_EP2VM_start( pHwData );
  78
  79         pWb35Tx->ByteTransfer += pMds->TxBufferSize[SendIndex];
  80         return;
  81
  82  cleanup:
  83         pWb35Tx->EP4vm_state = VM_STOP;
  84         OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxFireCounter );
  85 }
  86
  87
  88 void Wb35Tx_complete(struct urb * pUrb)
  89 {
  90         phw_data_t      pHwData = pUrb->context;
  91         PADAPTER        Adapter = (PADAPTER)pHwData->Adapter;
  92         PWB35TX         pWb35Tx = &pHwData->Wb35Tx;
  93         PMDS            pMds = &Adapter->Mds;
  94
  95         printk("wb35: tx complete\n");
  96         // Variable setting
  97         pWb35Tx->EP4vm_state = VM_COMPLETED;
  98         pWb35Tx->EP4VM_status = pUrb->status; //Store the last result of Irp
  99         pMds->TxOwner[ pWb35Tx->TxSendIndex ] = 0;// Set the owner. Free the owner bit always.
 100         pWb35Tx->TxSendIndex++;
 101         pWb35Tx->TxSendIndex %= MAX_USB_TX_BUFFER_NUMBER;
 102
 103         do {
 104                 if (pHwData->SurpriseRemove || pHwData->HwStop) // Let WbWlanHalt to handle surprise remove
 105                         break;
 106
 107                 if (pWb35Tx->tx_halt)
 108                         break;
 109
 110                 // The URB is completed, check the result
 111                 if (pWb35Tx->EP4VM_status != 0) {
 112                         printk("URB submission failed\n");
 113                         pWb35Tx->EP4vm_state = VM_STOP;
 114                         break; // Exit while(FALSE);
 115                 }
 116
 117                 Mds_Tx(Adapter);
 118                 Wb35Tx(pHwData);
 119                 return;
 120         } while(FALSE);
 121
 122         OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxFireCounter );
 123         pWb35Tx->EP4vm_state = VM_STOP;
 124 }
 125
 126 void Wb35Tx_reset_descriptor(  phw_data_t pHwData )
 127 {
 128         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 129
 130         pWb35Tx->TxSendIndex = 0;
 131         pWb35Tx->tx_halt = 0;
 132 }
 133
 134 unsigned char Wb35Tx_initial(phw_data_t pHwData)
 135 {
 136         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 137
 138         pWb35Tx->Tx4Urb = wb_usb_alloc_urb(0);
 139         if (!pWb35Tx->Tx4Urb)
 140                 return FALSE;
 141
 142         pWb35Tx->Tx2Urb = wb_usb_alloc_urb(0);
 143         if (!pWb35Tx->Tx2Urb)
 144         {
 145                 usb_free_urb( pWb35Tx->Tx4Urb );
 146                 return FALSE;
 147         }
 148
 149         return TRUE;
 150 }
 151
 152 //======================================================
 153 void Wb35Tx_stop(phw_data_t pHwData)
 154 {
 155         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 156
 157         // Trying to canceling the Trp of EP2
 158         if (pWb35Tx->EP2vm_state == VM_RUNNING)
 159                 usb_unlink_urb( pWb35Tx->Tx2Urb ); // Only use unlink, let Wb35Tx_destrot to free them
 160         #ifdef _PE_TX_DUMP_
 161         WBDEBUG(("EP2 Tx stop\n"));
 162         #endif
 163
 164         // Trying to canceling the Irp of EP4
 165         if (pWb35Tx->EP4vm_state == VM_RUNNING)
 166                 usb_unlink_urb( pWb35Tx->Tx4Urb ); // Only use unlink, let Wb35Tx_destrot to free them
 167         #ifdef _PE_TX_DUMP_
 168         WBDEBUG(("EP4 Tx stop\n"));
 169         #endif
 170 }
 171
 172 //======================================================
 173 void Wb35Tx_destroy(phw_data_t pHwData)
 174 {
 175         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 176
 177         // Wait for VM stop
 178         do {
 179                 OS_SLEEP(10000);  // Delay for waiting function enter 940623.1.a
 180         } while( (pWb35Tx->EP2vm_state != VM_STOP) && (pWb35Tx->EP4vm_state != VM_STOP) );
 181         OS_SLEEP(10000);  // Delay for waiting function enter 940623.1.b
 182
 183         if (pWb35Tx->Tx4Urb)
 184                 usb_free_urb( pWb35Tx->Tx4Urb );
 185
 186         if (pWb35Tx->Tx2Urb)
 187                 usb_free_urb( pWb35Tx->Tx2Urb );
 188
 189         #ifdef _PE_TX_DUMP_
 190         WBDEBUG(("Wb35Tx_destroy OK\n"));
 191         #endif
 192 }
 193
 194 void Wb35Tx_CurrentTime(phw_data_t pHwData, u32 TimeCount)
 195 {
 196         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 197         unsigned char Trigger = FALSE;
 198
 199         if (pWb35Tx->TxTimer > TimeCount)
 200                 Trigger = TRUE;
 201         else if (TimeCount > (pWb35Tx->TxTimer+500))
 202                 Trigger = TRUE;
 203
 204         if (Trigger) {
 205                 pWb35Tx->TxTimer = TimeCount;
 206                 Wb35Tx_EP2VM_start( pHwData );
 207         }
 208 }
 209
 210 void Wb35Tx_EP2VM_start(phw_data_t pHwData)
 211 {
 212         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 213
 214         // Allow only one thread to run into function
 215         if (OS_ATOMIC_INC( pHwData->Adapter, &pWb35Tx->TxResultCount ) == 1) {
 216                 pWb35Tx->EP2vm_state = VM_RUNNING;
 217                 Wb35Tx_EP2VM( pHwData );
 218         }
 219         else
 220                 OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxResultCount );
 221 }
 222
 223
 224 void Wb35Tx_EP2VM(phw_data_t pHwData)
 225 {
 226         PWB35TX pWb35Tx = &pHwData->Wb35Tx;
 227         struct urb *    pUrb = (struct urb *)pWb35Tx->Tx2Urb;
 228         PULONG  pltmp = (PULONG)pWb35Tx->EP2_buf;
 229         int             retv;
 230
 231         do {
 232                 if (pHwData->SurpriseRemove || pHwData->HwStop)
 233                         break;
 234
 235                 if (pWb35Tx->tx_halt)
 236                         break;
 237
 238                 //
 239                 // Issuing URB
 240                 //
 241                 usb_fill_int_urb( pUrb, pHwData->WbUsb.udev, usb_rcvintpipe(pHwData->WbUsb.udev,2),
 242                                   pltmp, MAX_INTERRUPT_LENGTH, Wb35Tx_EP2VM_complete, pHwData, 32);
 243
 244                 pWb35Tx->EP2vm_state = VM_RUNNING;
 245                 retv = wb_usb_submit_urb( pUrb );
 246
 247                 if(retv < 0) {
 248                         #ifdef _PE_TX_DUMP_
 249                         WBDEBUG(("EP2 Tx Irp sending error\n"));
 250                         #endif
 251                         break;
 252                 }
 253
 254                 return;
 255
 256         } while(FALSE);
 257
 258         pWb35Tx->EP2vm_state = VM_STOP;
 259         OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxResultCount );
 260 }
 261
 262
 263 void Wb35Tx_EP2VM_complete(struct urb * pUrb)
 264 {
 265         phw_data_t      pHwData = pUrb->context;
 266         T02_DESCRIPTOR  T02, TSTATUS;
 267         PADAPTER        Adapter = (PADAPTER)pHwData->Adapter;
 268         PWB35TX         pWb35Tx = &pHwData->Wb35Tx;
 269         PULONG          pltmp = (PULONG)pWb35Tx->EP2_buf;
 270         u32             i;
 271         u16             InterruptInLength;
 272
 273
 274         // Variable setting
 275         pWb35Tx->EP2vm_state = VM_COMPLETED;
 276         pWb35Tx->EP2VM_status = pUrb->status;
 277
 278         do {
 279                 // For Linux 2.4. Interrupt will always trigger
 280                 if( pHwData->SurpriseRemove || pHwData->HwStop ) // Let WbWlanHalt to handle surprise remove
 281                         break;
 282
 283                 if( pWb35Tx->tx_halt )
 284                         break;
 285
 286                 //The Urb is completed, check the result
 287                 if (pWb35Tx->EP2VM_status != 0) {
 288                         WBDEBUG(("EP2 IoCompleteRoutine return error\n"));
 289                         pWb35Tx->EP2vm_state= VM_STOP;
 290                         break; // Exit while(FALSE);
 291                 }
 292
 293                 // Update the Tx result
 294                 InterruptInLength = pUrb->actual_length;
 295                 // Modify for minimum memory access and DWORD alignment.
 296                 T02.value = cpu_to_le32(pltmp[0]) >> 8; // [31:8] -> [24:0]
 297                 InterruptInLength -= 1;// 20051221.1.c Modify the follow for more stable
 298                 InterruptInLength >>= 2; // InterruptInLength/4
 299                 for (i=1; i<=InterruptInLength; i++) {
 300                         T02.value |= ((cpu_to_le32(pltmp[i]) & 0xff) << 24);
 301
 302                         TSTATUS.value = T02.value;  //20061009 anson's endian
 303                         Mds_SendComplete( Adapter, &TSTATUS );
 304                         T02.value = cpu_to_le32(pltmp[i]) >> 8;
 305                 }
 306
 307                 return;
 308         } while(FALSE);
 309
 310         OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxResultCount );
 311         pWb35Tx->EP2vm_state = VM_STOP;
 312 }
 313