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/* SPDX-License-Identifier: GPL-2.0 */
/*
* IOMMU domain allocator for gxp
*
* Copyright (C) 2022 Google LLC
*/
#ifndef __GXP_DOMAIN_POOL_H__
#define __GXP_DOMAIN_POOL_H__
#include <gcip/gcip-iommu.h>
#include "gxp-dma.h"
/*
* Initializes a domain pool.
*
* @gxp: pointer to gxp device.
* @pool: caller-allocated pool structure.
* @size: size of the pre-allocated domains pool.
* Set to zero to fall back to dynamically allocated domains.
*
* returns 0 on success or negative error value.
*/
int gxp_domain_pool_init(struct gxp_dev *gxp,
struct gcip_iommu_domain_pool *pool,
unsigned int size);
/*
* Allocates a domain from the pool
* returns NULL on error.
*/
struct gcip_iommu_domain *
gxp_domain_pool_alloc(struct gcip_iommu_domain_pool *pool);
/* Releases a domain from the pool. */
void gxp_domain_pool_free(struct gcip_iommu_domain_pool *pool,
struct gcip_iommu_domain *gdomain);
/* Cleans up all resources used by the domain pool. */
void gxp_domain_pool_destroy(struct gcip_iommu_domain_pool *pool);
#endif /* __GXP_DOMAIN_POOL_H__ */
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