1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */ 3 4#ifndef __CC_SRAM_MGR_H__ 5#define __CC_SRAM_MGR_H__ 6 7#ifndef CC_CC_SRAM_SIZE 8#define CC_CC_SRAM_SIZE 4096 9#endif 10 11struct cc_drvdata; 12 13#define NULL_SRAM_ADDR ((u32)-1) 14 15/** 16 * cc_sram_mgr_init() - Initializes SRAM pool. 17 * The first X bytes of SRAM are reserved for ROM usage, hence, pool 18 * starts right after X bytes. 19 * 20 * @drvdata: Associated device driver context 21 * 22 * Return: 23 * Zero for success, negative value otherwise. 24 */ 25int cc_sram_mgr_init(struct cc_drvdata *drvdata); 26 27/** 28 * cc_sram_alloc() - Allocate buffer from SRAM pool. 29 * 30 * @drvdata: Associated device driver context 31 * @size: The requested bytes to allocate 32 * 33 * Return: 34 * Address offset in SRAM or NULL_SRAM_ADDR for failure. 35 */ 36u32 cc_sram_alloc(struct cc_drvdata *drvdata, u32 size); 37 38/** 39 * cc_set_sram_desc() - Create const descriptors sequence to 40 * set values in given array into SRAM. 41 * Note: each const value can't exceed word size. 42 * 43 * @src: A pointer to array of words to set as consts. 44 * @dst: The target SRAM buffer to set into 45 * @nelement: The number of words in "src" array 46 * @seq: A pointer to the given IN/OUT descriptor sequence 47 * @seq_len: A pointer to the given IN/OUT sequence length 48 */ 49void cc_set_sram_desc(const u32 *src, u32 dst, unsigned int nelement, 50 struct cc_hw_desc *seq, unsigned int *seq_len); 51 52#endif /*__CC_SRAM_MGR_H__*/ 53