diff options
Diffstat (limited to 'drivers/staging/winbond/linux/wb35tx.c')
| -rw-r--r-- | drivers/staging/winbond/linux/wb35tx.c | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/drivers/staging/winbond/linux/wb35tx.c b/drivers/staging/winbond/linux/wb35tx.c new file mode 100644 index 00000000000..cf19c3bc524 --- /dev/null +++ b/drivers/staging/winbond/linux/wb35tx.c @@ -0,0 +1,313 @@ +//============================================================================ +// Copyright (c) 1996-2002 Winbond Electronic Corporation +// +// Module Name: +// Wb35Tx.c +// +// Abstract: +// Processing the Tx message and put into down layer +// +//============================================================================ +#include "sysdef.h" + + +unsigned char +Wb35Tx_get_tx_buffer(phw_data_t pHwData, PUCHAR *pBuffer ) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + *pBuffer = pWb35Tx->TxBuffer[0]; + return TRUE; +} + +void Wb35Tx_start(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + // Allow only one thread to run into function + if (OS_ATOMIC_INC(pHwData->Adapter, &pWb35Tx->TxFireCounter) == 1) { + pWb35Tx->EP4vm_state = VM_RUNNING; + Wb35Tx(pHwData); + } else + OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxFireCounter ); +} + + +void Wb35Tx(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + PADAPTER Adapter = pHwData->Adapter; + PUCHAR pTxBufferAddress; + PMDS pMds = &Adapter->Mds; + struct urb * pUrb = (struct urb *)pWb35Tx->Tx4Urb; + int retv; + u32 SendIndex; + + + if (pHwData->SurpriseRemove || pHwData->HwStop) + goto cleanup; + + if (pWb35Tx->tx_halt) + goto cleanup; + + // Ownership checking + SendIndex = pWb35Tx->TxSendIndex; + if (!pMds->TxOwner[SendIndex]) //No more data need to be sent, return immediately + goto cleanup; + + pTxBufferAddress = pWb35Tx->TxBuffer[SendIndex]; + // + // Issuing URB + // + usb_fill_bulk_urb(pUrb, pHwData->WbUsb.udev, + usb_sndbulkpipe(pHwData->WbUsb.udev, 4), + pTxBufferAddress, pMds->TxBufferSize[ SendIndex ], + Wb35Tx_complete, pHwData); + + pWb35Tx->EP4vm_state = VM_RUNNING; + retv = wb_usb_submit_urb( pUrb ); + if (retv<0) { + printk("EP4 Tx Irp sending error\n"); + goto cleanup; + } + + // Check if driver needs issue Irp for EP2 + pWb35Tx->TxFillCount += pMds->TxCountInBuffer[SendIndex]; + if (pWb35Tx->TxFillCount > 12) + Wb35Tx_EP2VM_start( pHwData ); + + pWb35Tx->ByteTransfer += pMds->TxBufferSize[SendIndex]; + return; + + cleanup: + pWb35Tx->EP4vm_state = VM_STOP; + OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxFireCounter ); +} + + +void Wb35Tx_complete(struct urb * pUrb) +{ + phw_data_t pHwData = pUrb->context; + PADAPTER Adapter = (PADAPTER)pHwData->Adapter; + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + PMDS pMds = &Adapter->Mds; + + printk("wb35: tx complete\n"); + // Variable setting + pWb35Tx->EP4vm_state = VM_COMPLETED; + pWb35Tx->EP4VM_status = pUrb->status; //Store the last result of Irp + pMds->TxOwner[ pWb35Tx->TxSendIndex ] = 0;// Set the owner. Free the owner bit always. + pWb35Tx->TxSendIndex++; + pWb35Tx->TxSendIndex %= MAX_USB_TX_BUFFER_NUMBER; + + do { + if (pHwData->SurpriseRemove || pHwData->HwStop) // Let WbWlanHalt to handle surprise remove + break; + + if (pWb35Tx->tx_halt) + break; + + // The URB is completed, check the result + if (pWb35Tx->EP4VM_status != 0) { + printk("URB submission failed\n"); + pWb35Tx->EP4vm_state = VM_STOP; + break; // Exit while(FALSE); + } + + Mds_Tx(Adapter); + Wb35Tx(pHwData); + return; + } while(FALSE); + + OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxFireCounter ); + pWb35Tx->EP4vm_state = VM_STOP; +} + +void Wb35Tx_reset_descriptor( phw_data_t pHwData ) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + pWb35Tx->TxSendIndex = 0; + pWb35Tx->tx_halt = 0; +} + +unsigned char Wb35Tx_initial(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + pWb35Tx->Tx4Urb = wb_usb_alloc_urb(0); + if (!pWb35Tx->Tx4Urb) + return FALSE; + + pWb35Tx->Tx2Urb = wb_usb_alloc_urb(0); + if (!pWb35Tx->Tx2Urb) + { + usb_free_urb( pWb35Tx->Tx4Urb ); + return FALSE; + } + + return TRUE; +} + +//====================================================== +void Wb35Tx_stop(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + // Trying to canceling the Trp of EP2 + if (pWb35Tx->EP2vm_state == VM_RUNNING) + usb_unlink_urb( pWb35Tx->Tx2Urb ); // Only use unlink, let Wb35Tx_destrot to free them + #ifdef _PE_TX_DUMP_ + WBDEBUG(("EP2 Tx stop\n")); + #endif + + // Trying to canceling the Irp of EP4 + if (pWb35Tx->EP4vm_state == VM_RUNNING) + usb_unlink_urb( pWb35Tx->Tx4Urb ); // Only use unlink, let Wb35Tx_destrot to free them + #ifdef _PE_TX_DUMP_ + WBDEBUG(("EP4 Tx stop\n")); + #endif +} + +//====================================================== +void Wb35Tx_destroy(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + // Wait for VM stop + do { + OS_SLEEP(10000); // Delay for waiting function enter 940623.1.a + } while( (pWb35Tx->EP2vm_state != VM_STOP) && (pWb35Tx->EP4vm_state != VM_STOP) ); + OS_SLEEP(10000); // Delay for waiting function enter 940623.1.b + + if (pWb35Tx->Tx4Urb) + usb_free_urb( pWb35Tx->Tx4Urb ); + + if (pWb35Tx->Tx2Urb) + usb_free_urb( pWb35Tx->Tx2Urb ); + + #ifdef _PE_TX_DUMP_ + WBDEBUG(("Wb35Tx_destroy OK\n")); + #endif +} + +void Wb35Tx_CurrentTime(phw_data_t pHwData, u32 TimeCount) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + unsigned char Trigger = FALSE; + + if (pWb35Tx->TxTimer > TimeCount) + Trigger = TRUE; + else if (TimeCount > (pWb35Tx->TxTimer+500)) + Trigger = TRUE; + + if (Trigger) { + pWb35Tx->TxTimer = TimeCount; + Wb35Tx_EP2VM_start( pHwData ); + } +} + +void Wb35Tx_EP2VM_start(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + + // Allow only one thread to run into function + if (OS_ATOMIC_INC( pHwData->Adapter, &pWb35Tx->TxResultCount ) == 1) { + pWb35Tx->EP2vm_state = VM_RUNNING; + Wb35Tx_EP2VM( pHwData ); + } + else + OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxResultCount ); +} + + +void Wb35Tx_EP2VM(phw_data_t pHwData) +{ + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + struct urb * pUrb = (struct urb *)pWb35Tx->Tx2Urb; + PULONG pltmp = (PULONG)pWb35Tx->EP2_buf; + int retv; + + do { + if (pHwData->SurpriseRemove || pHwData->HwStop) + break; + + if (pWb35Tx->tx_halt) + break; + + // + // Issuing URB + // + usb_fill_int_urb( pUrb, pHwData->WbUsb.udev, usb_rcvintpipe(pHwData->WbUsb.udev,2), + pltmp, MAX_INTERRUPT_LENGTH, Wb35Tx_EP2VM_complete, pHwData, 32); + + pWb35Tx->EP2vm_state = VM_RUNNING; + retv = wb_usb_submit_urb( pUrb ); + + if(retv < 0) { + #ifdef _PE_TX_DUMP_ + WBDEBUG(("EP2 Tx Irp sending error\n")); + #endif + break; + } + + return; + + } while(FALSE); + + pWb35Tx->EP2vm_state = VM_STOP; + OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxResultCount ); +} + + +void Wb35Tx_EP2VM_complete(struct urb * pUrb) +{ + phw_data_t pHwData = pUrb->context; + T02_DESCRIPTOR T02, TSTATUS; + PADAPTER Adapter = (PADAPTER)pHwData->Adapter; + PWB35TX pWb35Tx = &pHwData->Wb35Tx; + PULONG pltmp = (PULONG)pWb35Tx->EP2_buf; + u32 i; + u16 InterruptInLength; + + + // Variable setting + pWb35Tx->EP2vm_state = VM_COMPLETED; + pWb35Tx->EP2VM_status = pUrb->status; + + do { + // For Linux 2.4. Interrupt will always trigger + if( pHwData->SurpriseRemove || pHwData->HwStop ) // Let WbWlanHalt to handle surprise remove + break; + + if( pWb35Tx->tx_halt ) + break; + + //The Urb is completed, check the result + if (pWb35Tx->EP2VM_status != 0) { + WBDEBUG(("EP2 IoCompleteRoutine return error\n")); + pWb35Tx->EP2vm_state= VM_STOP; + break; // Exit while(FALSE); + } + + // Update the Tx result + InterruptInLength = pUrb->actual_length; + // Modify for minimum memory access and DWORD alignment. + T02.value = cpu_to_le32(pltmp[0]) >> 8; // [31:8] -> [24:0] + InterruptInLength -= 1;// 20051221.1.c Modify the follow for more stable + InterruptInLength >>= 2; // InterruptInLength/4 + for (i=1; i<=InterruptInLength; i++) { + T02.value |= ((cpu_to_le32(pltmp[i]) & 0xff) << 24); + + TSTATUS.value = T02.value; //20061009 anson's endian + Mds_SendComplete( Adapter, &TSTATUS ); + T02.value = cpu_to_le32(pltmp[i]) >> 8; + } + + return; + } while(FALSE); + + OS_ATOMIC_DEC( pHwData->Adapter, &pWb35Tx->TxResultCount ); + pWb35Tx->EP2vm_state = VM_STOP; +} + |