mirror of https://gitee.com/openkylin/linux.git
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
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#ifndef __CC_SRAM_MGR_H__
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#define __CC_SRAM_MGR_H__
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#ifndef CC_CC_SRAM_SIZE
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#define CC_CC_SRAM_SIZE 4096
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#endif
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struct cc_drvdata;
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/**
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* Address (offset) within CC internal SRAM
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*/
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typedef u64 cc_sram_addr_t;
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#define NULL_SRAM_ADDR ((cc_sram_addr_t)-1)
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/*!
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* Initializes SRAM pool.
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* The first X bytes of SRAM are reserved for ROM usage, hence, pool
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* starts right after X bytes.
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*
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* \param drvdata
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*
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* \return int Zero for success, negative value otherwise.
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*/
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int cc_sram_mgr_init(struct cc_drvdata *drvdata);
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/*!
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* Uninits SRAM pool.
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*
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* \param drvdata
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*/
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void cc_sram_mgr_fini(struct cc_drvdata *drvdata);
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/*!
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* Allocated buffer from SRAM pool.
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* Note: Caller is responsible to free the LAST allocated buffer.
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* This function does not taking care of any fragmentation may occur
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* by the order of calls to alloc/free.
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*
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* \param drvdata
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* \param size The requested bytes to allocate
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*/
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cc_sram_addr_t cc_sram_alloc(struct cc_drvdata *drvdata, u32 size);
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/**
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* cc_set_sram_desc() - Create const descriptors sequence to
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* set values in given array into SRAM.
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* Note: each const value can't exceed word size.
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*
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* @src: A pointer to array of words to set as consts.
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* @dst: The target SRAM buffer to set into
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* @nelements: The number of words in "src" array
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* @seq: A pointer to the given IN/OUT descriptor sequence
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* @seq_len: A pointer to the given IN/OUT sequence length
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*/
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void cc_set_sram_desc(const u32 *src, cc_sram_addr_t dst,
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unsigned int nelement, struct cc_hw_desc *seq,
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unsigned int *seq_len);
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#endif /*__CC_SRAM_MGR_H__*/
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