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 11 struct cc_drvdata; 12 13 /** 14 * Address (offset) within CC internal SRAM 15 */ 16 17 typedef u64 cc_sram_addr_t; 18 19 #define NULL_SRAM_ADDR ((cc_sram_addr_t)-1) 20 21 /*! 22 * Initializes SRAM pool. 23 * The first X bytes of SRAM are reserved for ROM usage, hence, pool 24 * starts right after X bytes. 25 * 26 * \param drvdata 27 * 28 * \return int Zero for success, negative value otherwise. 29 */ 30 int cc_sram_mgr_init(struct cc_drvdata *drvdata); 31 32 /*! 33 * Uninits SRAM pool. 34 * 35 * \param drvdata 36 */ 37 void cc_sram_mgr_fini(struct cc_drvdata *drvdata); 38 39 /*! 40 * Allocated buffer from SRAM pool. 41 * Note: Caller is responsible to free the LAST allocated buffer. 42 * This function does not taking care of any fragmentation may occur 43 * by the order of calls to alloc/free. 44 * 45 * \param drvdata 46 * \param size The requested bytes to allocate 47 */ 48 cc_sram_addr_t cc_sram_alloc(struct cc_drvdata *drvdata, u32 size); 49 50 /** 51 * cc_set_sram_desc() - Create const descriptors sequence to 52 * set values in given array into SRAM. 53 * Note: each const value can't exceed word size. 54 * 55 * @src: A pointer to array of words to set as consts. 56 * @dst: The target SRAM buffer to set into 57 * @nelements: The number of words in "src" array 58 * @seq: A pointer to the given IN/OUT descriptor sequence 59 * @seq_len: A pointer to the given IN/OUT sequence length 60 */ 61 void cc_set_sram_desc(const u32 *src, cc_sram_addr_t dst, 62 unsigned int nelement, struct cc_hw_desc *seq, 63 unsigned int *seq_len); 64 65 #endif /*__CC_SRAM_MGR_H__*/ 66