1 /* 2 * Copyright (C) 2010, 2013, 2015-2017 ARM Limited. All rights reserved. 3 * 4 * This program is free software and is provided to you under the terms of the GNU General Public License version 2 5 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence. 6 * 7 * A copy of the licence is included with the program, and can also be obtained from Free Software 8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 9 */ 10 11 #ifndef __MALI_BLOCK_ALLOCATOR_H__ 12 #define __MALI_BLOCK_ALLOCATOR_H__ 13 14 #include "mali_session.h" 15 #include "mali_memory.h" 16 #include <linux/spinlock.h> 17 18 #include "mali_memory_types.h" 19 20 #define MALI_BLOCK_SIZE (PAGE_SIZE) /* 4 kB, manage BLOCK memory as page size */ 21 #define MALI_BLOCK_REF_MASK (0xFFF) 22 #define MALI_BLOCK_MAX_REF_COUNT (0xFFF) 23 24 25 26 typedef struct mali_block_allocator { 27 /* 28 * In free list, each node's ref_count is 0, 29 * ref_count added when allocated or referenced in COW 30 */ 31 mali_block_item *items; /* information for each block item*/ 32 struct list_head free; /*free list of mali_memory_node*/ 33 spinlock_t sp_lock; /*lock for reference count & free list opertion*/ 34 u32 total_num; /* Number of total pages*/ 35 atomic_t free_num; /*number of free pages*/ 36 } mali_block_allocator; 37 38 unsigned long _mali_blk_item_get_phy_addr(mali_block_item *item); 39 unsigned long _mali_blk_item_get_pfn(mali_block_item *item); 40 u32 mali_mem_block_get_ref_count(mali_page_node *node); 41 u32 mali_mem_block_add_ref(mali_page_node *node); 42 u32 mali_mem_block_dec_ref(mali_page_node *node); 43 u32 mali_mem_block_release(mali_mem_backend *mem_bkend); 44 int mali_mem_block_alloc(mali_mem_block_mem *block_mem, u32 size); 45 int mali_mem_block_mali_map(mali_mem_block_mem *block_mem, struct mali_session_data *session, u32 vaddr, u32 props); 46 void mali_mem_block_mali_unmap(mali_mem_allocation *alloc); 47 48 int mali_mem_block_cpu_map(mali_mem_backend *mem_bkend, struct vm_area_struct *vma); 49 _mali_osk_errcode_t mali_memory_core_resource_dedicated_memory(u32 start, u32 size); 50 mali_bool mali_memory_have_dedicated_memory(void); 51 u32 mali_mem_block_free(mali_mem_block_mem *block_mem); 52 u32 mali_mem_block_free_list(struct list_head *list); 53 void mali_mem_block_free_node(struct mali_page_node *node); 54 void mali_mem_block_allocator_destroy(void); 55 _mali_osk_errcode_t mali_mem_block_unref_node(struct mali_page_node *node); 56 u32 mali_mem_block_allocator_stat(void); 57 58 #endif /* __MALI_BLOCK_ALLOCATOR_H__ */ 59