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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
*/
#ifndef RXE_POOL_H
#define RXE_POOL_H
enum rxe_elem_type {
RXE_TYPE_UC,
RXE_TYPE_PD,
RXE_TYPE_AH,
RXE_TYPE_SRQ,
RXE_TYPE_QP,
RXE_TYPE_CQ,
RXE_TYPE_MR,
RXE_TYPE_MW,
RXE_NUM_TYPES, /* keep me last */
};
struct rxe_pool_elem {
struct rxe_pool *pool;
void *obj;
struct kref ref_cnt;
struct list_head list;
struct completion complete;
u32 index;
};
struct rxe_pool {
struct rxe_dev *rxe;
const char *name;
void (*cleanup)(struct rxe_pool_elem *elem);
enum rxe_elem_type type;
unsigned int max_elem;
atomic_t num_elem;
size_t elem_size;
size_t elem_offset;
struct xarray xa;
struct xa_limit limit;
u32 next;
};
/* initialize a pool of objects with given limit on
* number of elements. gets parameters from rxe_type_info
* pool elements will be allocated out of a slab cache
*/
void rxe_pool_init(struct rxe_dev *rxe, struct rxe_pool *pool,
enum rxe_elem_type type);
/* free resources from object pool */
void rxe_pool_cleanup(struct rxe_pool *pool);
/* allocate an object from pool */
void *rxe_alloc(struct rxe_pool *pool);
/* connect already allocated object to pool */
int __rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_elem *elem,
bool sleepable);
#define rxe_add_to_pool(pool, obj) __rxe_add_to_pool(pool, &(obj)->elem, true)
#define rxe_add_to_pool_ah(pool, obj, sleepable) __rxe_add_to_pool(pool, \
&(obj)->elem, sleepable)
/* lookup an indexed object from index. takes a reference on object */
void *rxe_pool_get_index(struct rxe_pool *pool, u32 index);
int __rxe_get(struct rxe_pool_elem *elem);
#define rxe_get(obj) __rxe_get(&(obj)->elem)
int __rxe_put(struct rxe_pool_elem *elem);
#define rxe_put(obj) __rxe_put(&(obj)->elem)
int __rxe_cleanup(struct rxe_pool_elem *elem, bool sleepable);
#define rxe_cleanup(obj) __rxe_cleanup(&(obj)->elem, true)
#define rxe_cleanup_ah(obj, sleepable) __rxe_cleanup(&(obj)->elem, sleepable)
#define rxe_read(obj) kref_read(&(obj)->elem.ref_cnt)
void __rxe_finalize(struct rxe_pool_elem *elem);
#define rxe_finalize(obj) __rxe_finalize(&(obj)->elem)
#endif /* RXE_POOL_H */
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