374 lines
11 KiB
C
374 lines
11 KiB
C
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/*******************************************************************************
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This software file (the "File") is distributed by Marvell International Ltd.
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or its affiliate(s) under the terms of the GNU General Public License Version 2,
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June 1991 (the "License"). You may use, redistribute and/or modify this File
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in accordance with the terms and conditions of the License, a copy of which
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is available along with the File in the license.txt file or by writing to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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or on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
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THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
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WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
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DISCLAIMED. The GPL License provides additional details about this warranty
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disclaimer.
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(C) Copyright 2004 - 2007 Marvell Semiconductor Israel Ltd. All Rights Reserved.
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(C) Copyright 1999 - 2004 Chipidea Microelectronica, S.A. All Rights Reserved.
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*******************************************************************************/
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#include "mvUsbDevApi.h"
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#include "mvUsbDevPrv.h"
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#if defined(USB_UNDERRUN_WA)
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typedef struct
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{
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uint_8* buff_ptr[MAX_XDS_FOR_TR_CALLS];
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uint_32 size[MAX_XDS_FOR_TR_CALLS];
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uint_8 ep_num[MAX_XDS_FOR_TR_CALLS];
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int head;
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int tail;
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int tail_dma;
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int num;
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int num_dma;
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} USB_SEND_QUEUE;
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uint_8* usbSramBase;
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int usbSramSize;
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int usbSramPartSize;
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USB_SEND_QUEUE usbSendQueue;
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uint_32 usbSentSize = 0;
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uint_32 usbDmaSize = 0;
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#define S_FREE 0
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#define S_BUSY 1
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uint_32 dma_index = 0;
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uint_32 sent_index = 0;
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uint_32 sram_parts[USB_SRAM_MAX_PARTS];
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void _usb_reset_send_queue(void)
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{
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int i;
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usbSendQueue.num = 0;
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usbSendQueue.num_dma = 0;
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usbSendQueue.head = 0;
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usbSendQueue.tail = 0;
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usbSendQueue.tail_dma = 0;
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for(i=0; i<MAX_XDS_FOR_TR_CALLS; i++)
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{
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usbSendQueue.size[i] = 0;
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usbSendQueue.buff_ptr[i] = NULL;
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usbSendQueue.ep_num[i] = 0;
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}
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usbSramPartSize = usbSramSize/global_wa_sram_parts;
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for(i=0; i<global_wa_sram_parts; i++)
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{
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sram_parts[i] = S_FREE;
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}
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}
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uint_8 _usb_prepare_to_send(void* handle)
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{
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XD_STRUCT_PTR xd_ptr;
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USB_DEV_STATE_STRUCT_PTR usb_dev_ptr;
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uint_8* buff_ptr;
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uint_8* tmp_buff;
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uint_32 size;
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int num_dma, tail_dma, i;
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uint_8 error = 0;
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usb_dev_ptr = (USB_DEV_STATE_STRUCT_PTR)handle;
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tail_dma = usbSendQueue.tail_dma;
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num_dma = usbSendQueue.num_dma;
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buff_ptr = usbSendQueue.buff_ptr[tail_dma];
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size = usbSendQueue.size[tail_dma];
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if(num_dma == 0)
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return 0;
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/*
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USB_printf("_usb_prepare_to_send: num=%d, tail=%d, sentSize=%d, size=%d, buff=%p\n",
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num_dma, tail_dma, usbSentSize, size, buff_ptr);
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*/
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for(i=0; i<global_wa_sram_parts; i++)
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{
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if(sram_parts[dma_index] != S_FREE)
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break;
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if(usbDmaSize >= usbSendQueue.size[tail_dma])
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{
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/* Remove from the usbSendQueues */
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num_dma--;
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tail_dma++;
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if(tail_dma == MAX_XDS_FOR_TR_CALLS)
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tail_dma = 0;
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usbSendQueue.tail_dma = tail_dma;
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usbSendQueue.num_dma = num_dma;
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usbDmaSize = 0;
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if(num_dma == 0)
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break;
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}
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buff_ptr = usbSendQueue.buff_ptr[tail_dma] + usbDmaSize;
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size = MIN(usbSramPartSize, (usbSendQueue.size[tail_dma] - usbDmaSize) );
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usbDmaSize += size;
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if(size > global_wa_threshold)
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{
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tmp_buff = buff_ptr;
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buff_ptr = (uint_8*)((int)usbSramBase + (dma_index * usbSramPartSize));
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USB_idma_copy(buff_ptr, tmp_buff, size);
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sram_parts[dma_index] = S_BUSY;
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dma_index++;
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if(dma_index == global_wa_sram_parts)
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dma_index = 0;
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}
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/* Get a transfer descriptor */
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USB_XD_QGET(usb_dev_ptr->XD_HEAD, usb_dev_ptr->XD_TAIL, xd_ptr);
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usb_dev_ptr->XD_ENTRIES--;
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USB_dcache_flush((pointer)buff_ptr, size);
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/* Initialize the new transfer descriptor */
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xd_ptr->EP_NUM = usbSendQueue.ep_num[tail_dma];
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xd_ptr->BDIRECTION = ARC_USB_SEND;
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xd_ptr->WTOTALLENGTH = size;
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xd_ptr->WSOFAR = 0;
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xd_ptr->WSTARTADDRESS = buff_ptr;
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xd_ptr->BSTATUS = ARC_USB_STATUS_TRANSFER_ACCEPTED;
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error = _usb_dci_vusb20_add_dTD(handle, xd_ptr);
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if(error)
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break;
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}
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return error;
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}
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/*FUNCTION*-------------------------------------------------------------
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*
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* Function Name : usbSendComplete
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* Returned Value : None
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* Comments :
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* Callback for send transfer complete event.
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*
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*END*-----------------------------------------------------------------*/
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void usbSendComplete(void* handle, uint_8 type, boolean setup, uint_8 dir,
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uint_8_ptr buffer, uint_32 length, uint_8 error)
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{
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/* Check if this complete is one from the sendQueue */
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if( (usbSendQueue.ep_num[usbSendQueue.tail] == type) &&
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(usbSendQueue.num > 0) )
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{
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USB_DEV_STATE_STRUCT_PTR usb_dev_ptr;
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uint_8* buff_ptr;
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uint_32 size;
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int num, tail;
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usb_dev_ptr = (USB_DEV_STATE_STRUCT_PTR)handle;
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tail = usbSendQueue.tail;
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num = usbSendQueue.num;
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buff_ptr = usbSendQueue.buff_ptr[tail];
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size = usbSendQueue.size[tail];
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/*
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USB_printf("usbSendComplete: num=%d, tail=%d, usbSentSize=%d, type=%d, length=%d (%d), buff=%p (%p)\n",
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num, tail, usbSentSize, type, length, usbSendQueue.size[tail],
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buffer, usbSendQueue.buff_ptr[tail]);
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*/
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usbSentSize += length;
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/* if the buffer was on the SRAM */
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if( ((unsigned)buffer >= (unsigned)usbSramBase) &&
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((unsigned)buffer < ((unsigned)usbSramBase + (usbSramPartSize * global_wa_sram_parts))) )
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{
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sram_parts[sent_index] = S_FREE;
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sent_index++;
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if(sent_index == global_wa_sram_parts)
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sent_index = 0;
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}
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if(usbSentSize >= usbSendQueue.size[tail])
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{
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/* Remove from the usbSendQueues */
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num--;
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tail++;
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if(tail == MAX_XDS_FOR_TR_CALLS)
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tail = 0;
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usbSendQueue.tail = tail;
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usbSendQueue.num = num;
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usbSentSize = 0;
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/* Call complete callback */
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_usb_device_call_service(handle, type, setup, dir,
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buff_ptr, size, error);
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if(num == 0)
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return;
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}
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error = _usb_prepare_to_send(handle);
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if (error)
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{
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USB_printf("usbSendComplete, add_dTD failed\n");
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}
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}
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else
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{
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/* Call complete callback */
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_usb_device_call_service(handle, type, setup, dir,
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buffer, length, error);
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}
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}
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#endif /* USB_UNDERRUN_WA */
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/*FUNCTION*-------------------------------------------------------------
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*
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* Function Name : _usb_device_send_data
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* Returned Value : USB_OK or error code
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* Comments :
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* Sends data on a specified endpoint.
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*
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*END*-----------------------------------------------------------------*/
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uint_8 _usb_device_send_data
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(
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/* [IN] the USB_USB_dev_initialize state structure */
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_usb_device_handle handle,
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/* [IN] the Endpoint number */
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uint_8 ep_num,
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/* [IN] buffer to send */
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uint_8_ptr buff_ptr,
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/* [IN] length of the transfer */
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uint_32 size
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)
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{ /* Body */
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int lockKey;
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uint_8 error = 0;
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XD_STRUCT_PTR xd_ptr;
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USB_DEV_STATE_STRUCT_PTR usb_dev_ptr;
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boolean toSend = TRUE;
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usb_dev_ptr = (USB_DEV_STATE_STRUCT_PTR)handle;
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ARC_DEBUG_TRACE(ARC_DEBUG_FLAG_TX,
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"send_data: handle=%p, ep=%d, pBuf=0x%x, size=%d, EP_QH=%p\n",
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handle, ep_num, (unsigned)buff_ptr, (int)size, usb_dev_ptr->EP_QUEUE_HEAD_PTR);
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ARC_DEBUG_CODE(ARC_DEBUG_FLAG_STATS, (usb_dev_ptr->STATS.usb_send_count++));
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lockKey = USB_lock();
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if (!usb_dev_ptr->XD_ENTRIES)
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{
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USB_unlock(lockKey);
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USB_printf("_usb_device_send_data, transfer in progress\n");
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return ARC_USB_STATUS_TRANSFER_IN_PROGRESS;
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} /* Endif */
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#if defined(USB_UNDERRUN_WA)
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{
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int head;
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VUSB20_EP_QUEUE_HEAD_STRUCT* ep_queue_head_ptr;
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ep_queue_head_ptr = (VUSB20_EP_QUEUE_HEAD_STRUCT_PTR)usb_dev_ptr->EP_QUEUE_HEAD_PTR +
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2*ep_num + ARC_USB_SEND;
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if( ((ep_queue_head_ptr->MAX_PKT_LENGTH >> 16) & 0x7FF) > global_wa_threshold)
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{
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/* Only Endpoints with maxPktSize more than 128 bytes need special processing */
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if( (size > global_wa_threshold) ||
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(usbSendQueue.num != 0) )
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{
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/*
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USB_printf("_usb_device_send_data: ep_num=%d, maxPktSize=%d, size=%d\n",
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ep_num, (ep_queue_head_ptr->MAX_PKT_LENGTH >> 16) & 0x7FF, size);
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*/
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/* Check if usbSendQueue is not Full */
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if(usbSendQueue.num == MAX_XDS_FOR_TR_CALLS)
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{
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USB_printf("ep=%d: usbSendQueue is FULL\n", ep_num);
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USB_unlock(lockKey);
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return USBERR_TX_FAILED;
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}
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/* Add to usbSendQueu */
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head = usbSendQueue.head;
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usbSendQueue.num++;
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usbSendQueue.num_dma++;
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usbSendQueue.size[head] = size;
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usbSendQueue.buff_ptr[head] = buff_ptr;
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usbSendQueue.ep_num[head] = ep_num;
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head++;
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if(head == MAX_XDS_FOR_TR_CALLS)
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head = 0;
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usbSendQueue.head = head;
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/* Process first usbSendQueue element if possible */
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if(usbSendQueue.num == 1)
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{
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error = _usb_prepare_to_send(handle);
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}
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toSend = FALSE;
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}
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}
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}
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#endif /* USB_UNDERRUN_WA */
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if(toSend == TRUE)
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{
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/* Get a transfer descriptor */
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USB_XD_QGET(usb_dev_ptr->XD_HEAD, usb_dev_ptr->XD_TAIL, xd_ptr);
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usb_dev_ptr->XD_ENTRIES--;
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if(buff_ptr != NULL)
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USB_dcache_flush((pointer)buff_ptr, size);
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/* Initialize the new transfer descriptor */
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xd_ptr->EP_NUM = ep_num;
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xd_ptr->BDIRECTION = ARC_USB_SEND;
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xd_ptr->WTOTALLENGTH = size;
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xd_ptr->WSOFAR = 0;
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xd_ptr->WSTARTADDRESS = buff_ptr;
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xd_ptr->BSTATUS = ARC_USB_STATUS_TRANSFER_ACCEPTED;
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error = _usb_dci_vusb20_add_dTD(handle, xd_ptr);
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}
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USB_unlock(lockKey);
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if (error)
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{
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USB_printf("_usb_device_send_data, transfer failed\n");
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return USBERR_TX_FAILED;
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} /* Endif */
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return error;
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} /* EndBody */
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