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/****************************************************************************
* (C) Copyright 2008 Samsung Electronics Co., Ltd., All rights reserved
*
* [File Name] : CommonTransferChecker.c
* [Description] : The Source file implements the external and internal functions of CommonTransferChecker.
* [Author] : Yang Soon Yeal { syatom.yang@samsung.com }
* [Department] : System LSI Division/System SW Lab
* [Created Date]: 2009/01/12
* [Revision History]
* (1) 2008/06/12 by Yang Soon Yeal { syatom.yang@samsung.com }
* - Created this file and implements functions of CommonTransferChecker
*
****************************************************************************/
/****************************************************************************
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
****************************************************************************/
#include "s3c-otg-transferchecker-common.h"
/******************************************************************************/
/*!
* @name int init_done_transfer_checker(void)
*
* @brief this function initiates S3CDoneTransferChecker Module.
*
*
* @param void
*
* @return void
*/
/******************************************************************************/
//ss1
/*void init_done_transfer_checker(void)
{
return USB_ERR_SUCCESS;
}*/
/******************************************************************************/
/*!
* @name void do_transfer_checker(struct sec_otghost *otghost)
*
* @brief this function processes the result of USB Transfer. So, do_transfer_checker fistly
* check which channel occurs OTG Interrupt and gets the status information of the channel.
* do_transfer_checker requests the information of td_t to S3CScheduler.
* To process the interrupt of the channel, do_transfer_checker calls the sub-modules of
* S3CDoneTransferChecker, for example, ControlTransferChecker, BulkTransferChecker.
* according to the process result of the channel interrupt, do_transfer_checker decides
* the USB Transfer will be done or retransmitted.
*
*
* @param void
*
* @return void
*/
/*******************************************************************************/
void do_transfer_checker (struct sec_otghost *otghost)
__releases(&otghost->lock)
__acquires(&otghost->lock)
{
u32 hc_intr = 0;
u32 hc_intr_msk = 0;
u8 do_try_cnt = 0;
hc_info_t ch_info;
u32 td_addr = 0;
td_t *done_td = {0};
u8 proc_result = 0;
//by ss1
otg_mem_set((void *)&ch_info, 0, sizeof(hc_info_t));
// Get value of HAINT...
get_intr_ch(&hc_intr,&hc_intr_msk);
start_do_transfer_checker:
while(do_try_cnt<MAX_CH_NUMBER) {
//checks the channel number to be masked or not.
if(!(hc_intr & hc_intr_msk & (1<<do_try_cnt))) {
do_try_cnt++;
goto start_do_transfer_checker;
}
//Gets the address of the td_t to have the channel to be interrupted.
if(get_td_info(do_try_cnt, &td_addr) == USB_ERR_SUCCESS) {
done_td = (td_t *)td_addr;
if(do_try_cnt != done_td->cur_stransfer.alloc_chnum) {
do_try_cnt++;
goto start_do_transfer_checker;
}
}
else {
do_try_cnt++;
goto start_do_transfer_checker;
}
//Gets the informationof channel to be interrupted.
get_ch_info(&ch_info,do_try_cnt);
switch(done_td->parent_ed_p->ed_desc.endpoint_type) {
case CONTROL_TRANSFER:
proc_result = process_control_transfer(done_td, &ch_info);
break;
case BULK_TRANSFER:
proc_result = process_bulk_transfer(done_td, &ch_info);
break;
case INT_TRANSFER:
proc_result = process_intr_transfer(done_td, &ch_info);
break;
case ISOCH_TRANSFER:
/* proc_result = ProcessIsochTransfer(done_td, &ch_info); */
break;
default:break;
}
if((proc_result == RE_TRANSMIT) || (proc_result == RE_SCHEDULE)) {
done_td->parent_ed_p->ed_status.is_in_transferring = false;
done_td->is_transfer_done = false;
done_td->is_transferring = false;
if(done_td->parent_ed_p->ed_desc.endpoint_type == CONTROL_TRANSFER ||
done_td->parent_ed_p->ed_desc.endpoint_type==BULK_TRANSFER) {
update_nonperio_stransfer(done_td);
}
else {
update_perio_stransfer(done_td);
}
if(proc_result == RE_TRANSMIT) {
retransmit(otghost, done_td);
}
else {
reschedule(done_td);
}
}
else if(proc_result==DE_ALLOCATE) {
done_td->parent_ed_p->ed_status.is_in_transferring = false;
done_td->parent_ed_p->ed_status.in_transferring_td = 0;
done_td->is_transfer_done = true;
done_td->is_transferring = false;
spin_unlock_otg(&otghost->lock);
otg_usbcore_giveback( done_td);
spin_lock_otg(&otghost->lock);
release_trans_resource(otghost, done_td);
}
else { //NO_ACTION....
done_td->parent_ed_p->ed_status.is_in_transferring = true;
done_td->parent_ed_p->ed_status.in_transferring_td = (u32)done_td;
done_td->is_transfer_done = false;
done_td->is_transferring = true;
}
do_try_cnt++;
}
// Complete to process the Channel Interrupt.
// So. we now start to scheduler of S3CScheduler.
do_schedule(otghost);
}
int release_trans_resource(struct sec_otghost *otghost, td_t *done_td)
{
//remove the pDeallocateTD from parent_ed_p.
otg_list_pop(&done_td->td_list_entry);
done_td->parent_ed_p->num_td--;
//Call deallocate to release the channel and bandwidth resource of S3CScheduler.
deallocate(done_td);
delete_td(otghost, done_td);
return USB_ERR_SUCCESS;
}
u32 calc_transferred_size(bool f_is_complete, td_t *td, hc_info_t *hc_info)
{
if(f_is_complete) {
if(td->parent_ed_p->ed_desc.is_ep_in) {
return td->cur_stransfer.buf_size - hc_info->hc_size.b.xfersize;
}
else {
return td->cur_stransfer.buf_size;
}
}
else {
return (td->cur_stransfer.packet_cnt - hc_info->hc_size.b.pktcnt)*td->parent_ed_p->ed_desc.max_packet_size;
}
}
void update_frame_number(td_t *pResultTD)
{
u32 cur_frame_num=0;
if(pResultTD->parent_ed_p->ed_desc.endpoint_type == CONTROL_TRANSFER ||
pResultTD->parent_ed_p->ed_desc.endpoint_type == BULK_TRANSFER) {
return;
}
pResultTD->parent_ed_p->ed_desc.sched_frame+= pResultTD->parent_ed_p->ed_desc.interval;
pResultTD->parent_ed_p->ed_desc.sched_frame &= HFNUM_MAX_FRNUM;
cur_frame_num = oci_get_frame_num();
if(((cur_frame_num - pResultTD->parent_ed_p->ed_desc.sched_frame)&HFNUM_MAX_FRNUM) <= (HFNUM_MAX_FRNUM>>1)) {
pResultTD->parent_ed_p->ed_desc.sched_frame = cur_frame_num;
}
}
void update_datatgl(u8 ubCurDataTgl, td_t *td)
{
switch(td->parent_ed_p->ed_desc.endpoint_type) {
case CONTROL_TRANSFER:
if(td->standard_dev_req_info.conrol_transfer_stage == DATA_STAGE) {
td->parent_ed_p->ed_status.control_data_tgl.data_tgl = ubCurDataTgl;
}
break;
case BULK_TRANSFER:
case INT_TRANSFER:
td->parent_ed_p->ed_status.data_tgl = ubCurDataTgl;
break;
case ISOCH_TRANSFER:
break;
default:break;
}
}
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