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03963caeb0
This sacrificial copyright header update is offered to the legal department as atonement for any changes made in this driver files in the course of the current year which have not been duly recorded as such. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2012-2019 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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