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#ifndef ISP2401
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#else
/**
Support for Intel Camera Imaging ISP subsystem.
Copyright (c) 2010 - 2015, Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope 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.
*/
#endif
#include "system_global.h"
#ifdef USE_INPUT_SYSTEM_VERSION_2401
#include "assert_support.h"
#include "platform_support.h"
#include "ia_css_isys.h"
#include "ibuf_ctrl_rmgr.h"
static ibuf_rsrc_t ibuf_rsrc;
static ibuf_handle_t *getHandle(uint16_t index)
{
ibuf_handle_t *handle = NULL;
if (index < MAX_IBUF_HANDLES)
handle = &ibuf_rsrc.handles[index];
return handle;
}
void ia_css_isys_ibuf_rmgr_init(void)
{
memset(&ibuf_rsrc, 0, sizeof(ibuf_rsrc));
ibuf_rsrc.free_size = MAX_INPUT_BUFFER_SIZE;
}
void ia_css_isys_ibuf_rmgr_uninit(void)
{
memset(&ibuf_rsrc, 0, sizeof(ibuf_rsrc));
ibuf_rsrc.free_size = MAX_INPUT_BUFFER_SIZE;
}
bool ia_css_isys_ibuf_rmgr_acquire(
uint32_t size,
uint32_t *start_addr)
{
bool retval = false;
bool input_buffer_found = false;
uint32_t aligned_size;
ibuf_handle_t *handle = NULL;
uint16_t i;
assert(start_addr != NULL);
assert(size > 0);
aligned_size = (size + (IBUF_ALIGN - 1)) & ~(IBUF_ALIGN - 1);
/* Check if there is an available un-used handle with the size
* that will fulfill the request.
*/
if (ibuf_rsrc.num_active < ibuf_rsrc.num_allocated) {
for (i = 0; i < ibuf_rsrc.num_allocated; i++) {
handle = getHandle(i);
if (!handle->active) {
if (handle->size >= aligned_size) {
handle->active = true;
input_buffer_found = true;
ibuf_rsrc.num_active++;
break;
}
}
}
}
if (!input_buffer_found) {
/* There were no available handles that fulfilled the
* request. Allocate a new handle with the requested size.
*/
if ((ibuf_rsrc.num_allocated < MAX_IBUF_HANDLES) &&
(ibuf_rsrc.free_size >= aligned_size)) {
handle = getHandle(ibuf_rsrc.num_allocated);
handle->start_addr = ibuf_rsrc.free_start_addr;
handle->size = aligned_size;
handle->active = true;
ibuf_rsrc.free_start_addr += aligned_size;
ibuf_rsrc.free_size -= aligned_size;
ibuf_rsrc.num_active++;
ibuf_rsrc.num_allocated++;
input_buffer_found = true;
}
}
if (input_buffer_found && handle) {
*start_addr = handle->start_addr;
retval = true;
}
return retval;
}
void ia_css_isys_ibuf_rmgr_release(
uint32_t *start_addr)
{
uint16_t i;
ibuf_handle_t *handle = NULL;
assert(start_addr != NULL);
for (i = 0; i < ibuf_rsrc.num_allocated; i++) {
handle = getHandle(i);
if ((handle->start_addr == *start_addr)
&& ( true == handle->active)) {
handle->active = false;
ibuf_rsrc.num_active--;
break;
}
}
}
#endif
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