src/arch/xtensa/smp/include/arch/alloc.h

/*
 * Copyright (c) 2018, Intel Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of the Intel Corporation nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * Author: Tomasz Lauda <tomasz.lauda@linux.intel.com>
 */

/**
 * \file arch/xtensa/smp/include/arch/alloc.h
 * \brief Xtensa SMP memory allocation header file
 * \authors Tomasz Lauda <tomasz.lauda@linux.intel.com>
 */

#ifndef __ARCH_ALLOC_H__
#define __ARCH_ALLOC_H__

#include <xtos-structs.h>
#include <sof/alloc.h>

extern struct core_context *core_ctx_ptr[PLATFORM_CORE_COUNT];
extern struct xtos_core_data *core_data_ptr[PLATFORM_CORE_COUNT];

/**
 * \brief Allocates memory for core specific data.
 * \param[in] core Slave core for which data needs to be allocated.
 */
static inline void alloc_core_context(int core)
{
	struct core_context *core_ctx;

	core_ctx = rzalloc(RZONE_RUNTIME, SOF_MEM_CAPS_RAM, sizeof(*core_ctx));
	dcache_writeback_invalidate_region(core_ctx, sizeof(*core_ctx));

	/* xtos_core_data is a big struct, so allocate it from system heap
	 * and never free again. Allocating from runtime heap would be
	 * a waste of a very big memory block.
	 */
	if (!core_data_ptr[core])
		core_data_ptr[core] = rzalloc(RZONE_SYS, SOF_MEM_CAPS_RAM,
					      sizeof(*core_data_ptr[core]));

	core_data_ptr[core]->thread_data_ptr = &core_ctx->td;
	dcache_writeback_invalidate_region(core_data_ptr[core],
					   sizeof(*core_data_ptr[core]));

	dcache_writeback_invalidate_region(core_data_ptr,
					   sizeof(core_data_ptr));

	core_ctx_ptr[core] = core_ctx;
	dcache_writeback_invalidate_region(core_ctx_ptr,
					   sizeof(core_ctx_ptr));
}

/**
 * \brief Frees memory allocated for core specific data.
 * \param[in] core Slave core for which data needs to be freed.
 */
static inline void free_core_context(int core)
{
	rfree(core_ctx_ptr[core]);
	dcache_writeback_invalidate_region(core_ctx_ptr[core],
					   sizeof(*core_ctx_ptr[core]));
}

#endif