/*
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* Copyright (C) 2010, 2013, 2015-2017 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __MALI_BLOCK_ALLOCATOR_H__
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#define __MALI_BLOCK_ALLOCATOR_H__
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#include "mali_session.h"
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#include "mali_memory.h"
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#include <linux/spinlock.h>
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#include "mali_memory_types.h"
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#define MALI_BLOCK_SIZE (PAGE_SIZE) /* 4 kB, manage BLOCK memory as page size */
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#define MALI_BLOCK_REF_MASK (0xFFF)
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#define MALI_BLOCK_MAX_REF_COUNT (0xFFF)
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typedef struct mali_block_allocator {
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/*
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* In free list, each node's ref_count is 0,
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* ref_count added when allocated or referenced in COW
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*/
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mali_block_item *items; /* information for each block item*/
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struct list_head free; /*free list of mali_memory_node*/
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spinlock_t sp_lock; /*lock for reference count & free list opertion*/
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u32 total_num; /* Number of total pages*/
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atomic_t free_num; /*number of free pages*/
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} mali_block_allocator;
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unsigned long _mali_blk_item_get_phy_addr(mali_block_item *item);
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unsigned long _mali_blk_item_get_pfn(mali_block_item *item);
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u32 mali_mem_block_get_ref_count(mali_page_node *node);
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u32 mali_mem_block_add_ref(mali_page_node *node);
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u32 mali_mem_block_dec_ref(mali_page_node *node);
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u32 mali_mem_block_release(mali_mem_backend *mem_bkend);
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int mali_mem_block_alloc(mali_mem_block_mem *block_mem, u32 size);
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int mali_mem_block_mali_map(mali_mem_block_mem *block_mem, struct mali_session_data *session, u32 vaddr, u32 props);
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void mali_mem_block_mali_unmap(mali_mem_allocation *alloc);
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int mali_mem_block_cpu_map(mali_mem_backend *mem_bkend, struct vm_area_struct *vma);
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_mali_osk_errcode_t mali_memory_core_resource_dedicated_memory(u32 start, u32 size);
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mali_bool mali_memory_have_dedicated_memory(void);
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u32 mali_mem_block_free(mali_mem_block_mem *block_mem);
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u32 mali_mem_block_free_list(struct list_head *list);
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void mali_mem_block_free_node(struct mali_page_node *node);
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void mali_mem_block_allocator_destroy(void);
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_mali_osk_errcode_t mali_mem_block_unref_node(struct mali_page_node *node);
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u32 mali_mem_block_allocator_stat(void);
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#endif /* __MALI_BLOCK_ALLOCATOR_H__ */
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