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