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/****************************************************************************
* (C) Copyright 2008 Samsung Electronics Co., Ltd., All rights reserved
*
* [File Name] : TransferReadyQ.c
* [Description] : The source file implements the internal functions of TransferReadyQ.
* [Author] : Yang Soon Yeal { syatom.yang@samsung.com }
* [Department] : System LSI Division/System SW Lab
* [Created Date]: 2008/06/04
* [Revision History]
* (1) 2008/06/04 by Yang Soon Yeal { syatom.yang@samsung.com }
* - Created this file and implements functions of TransferReadyQ.
* -# Jul 15,2008 v1.2 by SeungSoo Yang (ss1.yang@samsung.com) \n
* : Optimizing for performance \n
*
****************************************************************************/
/****************************************************************************
* 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-scheduler-scheduler.h"
static trans_ready_q_t periodic_trans_ready_q;
static trans_ready_q_t nonperiodic_trans_ready_q;
/******************************************************************************/
/*!
* @name void init_transfer_ready_q(void)
*
* @brief this function initiates PeriodicTransferReadyQ and NonPeriodicTransferReadyQ.
*
*
* @param void
*
* @return void.
*/
/******************************************************************************/
void init_transfer_ready_q(void)
{
otg_dbg(OTG_DBG_SCHEDULE,"start init_transfer_ready_q\n");
otg_list_init(&periodic_trans_ready_q.trans_ready_q_list_head);
periodic_trans_ready_q.is_periodic_transfer = true;
periodic_trans_ready_q.trans_ready_entry_num = 0;
periodic_trans_ready_q.total_alloc_chnum = 0;
periodic_trans_ready_q.total_perio_bus_bandwidth = 0;
otg_list_init(&nonperiodic_trans_ready_q.trans_ready_q_list_head);
nonperiodic_trans_ready_q.is_periodic_transfer = false;
nonperiodic_trans_ready_q.trans_ready_entry_num = 0;
nonperiodic_trans_ready_q.total_alloc_chnum = 0;
nonperiodic_trans_ready_q.total_perio_bus_bandwidth = 0;
}
/******************************************************************************/
/*!
* @name int insert_ed_to_ready_q(ed_t *insert_ed,
* bool f_isfirst)
*
* @brief this function inserts ed_t * to TransferReadyQ.
*
*
* @param [IN] insert_ed = indicates the ed_t to be inserted to TransferReadyQ.
* [IN] f_isfirst = indicates whether the insert_ed is inserted as first entry of TransferReadyQ.
*
* @return USB_ERR_SUCCESS -if successes to insert the insert_ed to TransferReadyQ.
* USB_ERR_FAILl -if fails to insert the insert_ed to TransferReadyQ.
*/
/******************************************************************************/
int insert_ed_to_ready_q(ed_t *insert_ed,
bool f_isfirst)
{
if(insert_ed->ed_desc.endpoint_type == BULK_TRANSFER||
insert_ed->ed_desc.endpoint_type == CONTROL_TRANSFER)
{
if(f_isfirst)
{
otg_list_push_next(&insert_ed->trans_ready_q_list_entry,&nonperiodic_trans_ready_q.trans_ready_q_list_head);
}
else
{
otg_list_push_prev(&insert_ed->trans_ready_q_list_entry,&nonperiodic_trans_ready_q.trans_ready_q_list_head);
}
nonperiodic_trans_ready_q.trans_ready_entry_num++;
}
else
{
if(f_isfirst)
{
otg_list_push_next(&insert_ed->trans_ready_q_list_entry,&periodic_trans_ready_q.trans_ready_q_list_head);
}
else
{
otg_list_push_prev(&insert_ed->trans_ready_q_list_entry,&periodic_trans_ready_q.trans_ready_q_list_head);
}
periodic_trans_ready_q.trans_ready_entry_num++;
}
return USB_ERR_SUCCESS;
}
u32 get_periodic_ready_q_entity_num(void)
{
return periodic_trans_ready_q.trans_ready_entry_num;
}
/******************************************************************************/
/*!
* @name int remove_ed_from_ready_q(ed_t *remove_ed)
*
* @brief this function removes ed_t * from TransferReadyQ.
*
*
* @param [IN] remove_ed = indicate the ed_t to be removed from TransferReadyQ.
*
* @return USB_ERR_SUCCESS -if successes to remove the remove_ed from TransferReadyQ.
* USB_ERR_FAILl -if fails to remove the remove_ed from TransferReadyQ.
*/
/******************************************************************************/
int remove_ed_from_ready_q(ed_t *remove_ed)
{
// SPINLOCK_t SLForRemoveED_t = SPIN_LOCK_INIT;
// u32 uiSLFlag=0;
otg_list_pop(&remove_ed->trans_ready_q_list_entry);
if(remove_ed->ed_desc.endpoint_type == BULK_TRANSFER||
remove_ed->ed_desc.endpoint_type == CONTROL_TRANSFER)
{
// spin_lock_irq_save_otg(&SLForRemoveED_t, uiSLFlag);
// otg_list_pop(&remove_ed->trans_ready_q_list_entry);
nonperiodic_trans_ready_q.trans_ready_entry_num--;
// spin_unlock_irq_save_otg(&SLForRemoveED_t, uiSLFlag);
}
else
{
// spin_lock_irq_save_otg(&SLForRemoveED_t, uiSLFlag);
// otg_list_pop(&remove_ed->trans_ready_q_list_entry);
periodic_trans_ready_q.trans_ready_entry_num--;
// spin_unlock_irq_save_otg(&SLForRemoveED_t, uiSLFlag);
}
return USB_ERR_SUCCESS;
}
//by ss1 unused func
/*
bool check_ed_on_ready_q(ed_t *check_ed_p)
{
if(check_ed_p->ed_status.is_in_transfer_ready_q)
return true;
else
return false;
}*/
/******************************************************************************/
/*!
* @name int get_ed_from_ready_q(bool f_isperiodic,
* td_t **get_ed)
*
* @brief this function returns the first entity of TransferReadyQ.
* if there are some ed_t on TransferReadyQ, this function pops first ed_t from TransferReadyQ.
* So, the TransferReadyQ don's has the poped ed_t.
*
*
* @param [IN] f_isperiodic = indicate whether Periodic or not
* [OUT] get_ed = indicate the double pointer to store the address of first entity
* on TransferReadyQ.
*
* @return USB_ERR_SUCCESS -if successes to get frist ed_t from TransferReadyQ.
* USB_ERR_NO_ENTITY -if fails to get frist ed_t from TransferReadyQ
* because there is no entity on TransferReadyQ.
*/
/******************************************************************************/
int get_ed_from_ready_q(bool f_isperiodic,
ed_t **get_ed)
{
if(f_isperiodic)
{
otg_list_head *transreadyq_list_entity=NULL;
if(periodic_trans_ready_q.trans_ready_entry_num==0)
{
return USB_ERR_NO_ENTITY;
}
transreadyq_list_entity = periodic_trans_ready_q.trans_ready_q_list_head.next;
//if(transreadyq_list_entity!= &periodic_trans_ready_q.trans_ready_q_list_head)
if(!otg_list_empty(&periodic_trans_ready_q.trans_ready_q_list_head))
{
*get_ed = otg_list_get_node(transreadyq_list_entity,ed_t,trans_ready_q_list_entry);
if (transreadyq_list_entity->prev == LIST_POISON2 ||
transreadyq_list_entity->next == LIST_POISON1) {
printk(KERN_ERR "s3c-otg-scheduler get_ed_from_ready_q error\n");
periodic_trans_ready_q.trans_ready_entry_num =0;
}
else {
otg_list_pop(transreadyq_list_entity);
periodic_trans_ready_q.trans_ready_entry_num--;
}
return USB_ERR_SUCCESS;
}
else
{
return USB_ERR_NO_ENTITY;
}
}
else
{
otg_list_head *transreadyq_list_entity=NULL;
if(nonperiodic_trans_ready_q.trans_ready_entry_num==0)
{
return USB_ERR_NO_ENTITY;
}
transreadyq_list_entity = nonperiodic_trans_ready_q.trans_ready_q_list_head.next;
//if(transreadyq_list_entity!= &nonperiodic_trans_ready_q.trans_ready_q_list_head)
if(!otg_list_empty(&nonperiodic_trans_ready_q.trans_ready_q_list_head))
{
*get_ed = otg_list_get_node(transreadyq_list_entity,ed_t, trans_ready_q_list_entry);
if (transreadyq_list_entity->prev == LIST_POISON2 ||
transreadyq_list_entity->next == LIST_POISON1) {
printk(KERN_ERR "s3c-otg-scheduler get_ed_from_ready_q error\n");
nonperiodic_trans_ready_q.trans_ready_entry_num =0;
}
else {
otg_list_pop(transreadyq_list_entity);
nonperiodic_trans_ready_q.trans_ready_entry_num--;
}
return USB_ERR_SUCCESS;
}
else
{
return USB_ERR_NO_ENTITY;
}
}
}
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