| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (C) 2012-2019 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__*/ |
