/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2012-2018 ARM Limited or its affiliates. */ #ifndef __CC_SRAM_MGR_H__ #define __CC_SRAM_MGR_H__ #ifndef CC_CC_SRAM_SIZE #define CC_CC_SRAM_SIZE 4096 #endif struct cc_drvdata; /** * Address (offset) within CC internal SRAM */ typedef u64 cc_sram_addr_t; #define NULL_SRAM_ADDR ((cc_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 cc_sram_mgr_init(struct cc_drvdata *drvdata); /*! * Uninits SRAM pool. * * \param drvdata */ void cc_sram_mgr_fini(struct cc_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 */ cc_sram_addr_t cc_sram_alloc(struct cc_drvdata *drvdata, u32 size); /** * cc_set_sram_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 cc_set_sram_desc(const u32 *src, cc_sram_addr_t dst, unsigned int nelement, struct cc_hw_desc *seq, unsigned int *seq_len); #endif /*__CC_SRAM_MGR_H__*/