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/*
* Copyright (C) 2012-2017 ARM Limited or its affiliates.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SSI_SRAM_MGR_H__
#define __SSI_SRAM_MGR_H__
#ifndef SSI_CC_SRAM_SIZE
#define SSI_CC_SRAM_SIZE 4096
#endif
struct ssi_drvdata;
/**
* Address (offset) within CC internal SRAM
*/
typedef u64 ssi_sram_addr_t;
#define NULL_SRAM_ADDR ((ssi_sram_addr_t)-1)
/*!
* Initializes SRAM pool.
* The first X bytes of SRAM are reserved for ROM usage, hence, pool
* starts right after X bytes.
*
* \param drvdata
*
* \return int Zero for success, negative value otherwise.
*/
int ssi_sram_mgr_init(struct ssi_drvdata *drvdata);
/*!
* Uninits SRAM pool.
*
* \param drvdata
*/
void ssi_sram_mgr_fini(struct ssi_drvdata *drvdata);
/*!
* Allocated buffer from SRAM pool.
* Note: Caller is responsible to free the LAST allocated buffer.
* This function does not taking care of any fragmentation may occur
* by the order of calls to alloc/free.
*
* \param drvdata
* \param size The requested bytes to allocate
*/
ssi_sram_addr_t ssi_sram_mgr_alloc(struct ssi_drvdata *drvdata, u32 size);
/**
* ssi_sram_mgr_const2sram_desc() - Create const descriptors sequence to
* set values in given array into SRAM.
* Note: each const value can't exceed word size.
*
* @src: A pointer to array of words to set as consts.
* @dst: The target SRAM buffer to set into
* @nelements: The number of words in "src" array
* @seq: A pointer to the given IN/OUT descriptor sequence
* @seq_len: A pointer to the given IN/OUT sequence length
*/
void ssi_sram_mgr_const2sram_desc(
const u32 *src, ssi_sram_addr_t dst,
unsigned int nelement,
struct cc_hw_desc *seq, unsigned int *seq_len);
#endif /*__SSI_SRAM_MGR_H__*/
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