mirror of
https://github.com/thead-yocto-mirror/xtensa_dsp
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114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/*
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* Copyright (c) 2016 - 2017 Cadence Design Systems Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Alternatively you can use and distribute this file under the terms of
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* the GNU General Public License version 2 or later.
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*/
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#ifndef XRP_ALLOC_H
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#define XRP_ALLOC_H
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#ifndef __KERNEL__
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#include <stdint.h>
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#include <xrp_atomic.h>
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#include <xrp_thread_impl.h>
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typedef uint32_t u32;
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typedef uint32_t phys_addr_t;
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typedef _Atomic uint32_t atomic_t;
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struct mutex {
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xrp_mutex o;
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};
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static inline void atomic_inc(atomic_t *v)
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{
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++*(volatile atomic_t *)v;
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}
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static inline int atomic_dec_and_test(atomic_t *v)
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{
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return --*(volatile atomic_t *)v == 0;
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}
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#endif
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struct xrp_allocation_pool;
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struct xrp_allocation;
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struct xrp_allocation_ops {
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long (*alloc)(struct xrp_allocation_pool *allocation_pool,
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u32 size, u32 align, struct xrp_allocation **alloc);
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void (*free)(struct xrp_allocation *allocation);
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void (*free_pool)(struct xrp_allocation_pool *allocation_pool);
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phys_addr_t (*offset)(const struct xrp_allocation *allocation);
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};
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struct xrp_allocation_pool {
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const struct xrp_allocation_ops *ops;
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};
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struct xrp_allocation {
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struct xrp_allocation_pool *pool;
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struct xrp_allocation *next;
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phys_addr_t start;
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u32 size;
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atomic_t ref;
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};
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static inline void xrp_free_pool(struct xrp_allocation_pool *allocation_pool)
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{
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allocation_pool->ops->free_pool(allocation_pool);
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}
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static inline void xrp_free(struct xrp_allocation *allocation)
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{
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return allocation->pool->ops->free(allocation);
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}
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static inline long xrp_allocate(struct xrp_allocation_pool *allocation_pool,
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u32 size, u32 align,
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struct xrp_allocation **alloc)
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{
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return allocation_pool->ops->alloc(allocation_pool,
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size, align, alloc);
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}
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static inline void xrp_allocation_get(struct xrp_allocation *xrp_allocation)
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{
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atomic_inc(&xrp_allocation->ref);
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}
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static inline void xrp_allocation_put(struct xrp_allocation *xrp_allocation)
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{
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if (atomic_dec_and_test(&xrp_allocation->ref))
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xrp_allocation->pool->ops->free(xrp_allocation);
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}
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static inline phys_addr_t xrp_allocation_offset(const struct xrp_allocation *allocation)
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{
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return allocation->pool->ops->offset(allocation);
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}
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#endif
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