| /* |
| * Copyright (C) 2013-2016 ARM Limited. All rights reserved. |
| * |
| * This program is free software and is provided to you under the terms of the GNU General Public License version 2 |
| * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence. |
| * |
| * A copy of the licence is included with the program, and can also be obtained from Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __MALI_MEMORY_SWAP_ALLOC_H__ |
| #define __MALI_MEMORY_SWAP_ALLOC_H__ |
| |
| #include "mali_osk.h" |
| #include "mali_session.h" |
| |
| #include "mali_memory_types.h" |
| #include "mali_pp_job.h" |
| |
| /** |
| * Initialize memory swapping module. |
| */ |
| _mali_osk_errcode_t mali_mem_swap_init(void); |
| |
| void mali_mem_swap_term(void); |
| |
| /** |
| * Return global share memory file to other modules. |
| */ |
| struct file *mali_mem_swap_get_global_swap_file(void); |
| |
| /** |
| * Unlock the given memory backend and pages in it could be swapped out by kernel. |
| */ |
| void mali_mem_swap_unlock_single_mem_backend(mali_mem_backend *mem_bkend); |
| |
| /** |
| * Remove the given memory backend from global swap list. |
| */ |
| void mali_memory_swap_list_backend_delete(mali_mem_backend *mem_bkend); |
| |
| /** |
| * Add the given memory backend to global swap list. |
| */ |
| void mali_memory_swap_list_backend_add(mali_mem_backend *mem_bkend); |
| |
| /** |
| * Allocate 1 index from bitmap used as page index in global swap file. |
| */ |
| u32 mali_mem_swap_idx_alloc(void); |
| |
| void mali_mem_swap_idx_free(u32 idx); |
| |
| /** |
| * Allocate a new swap item without page index. |
| */ |
| struct mali_swap_item *mali_mem_swap_alloc_swap_item(void); |
| |
| /** |
| * Free a swap item, truncate the corresponding space in page cache and free index of page. |
| */ |
| void mali_mem_swap_free_swap_item(mali_swap_item *swap_item); |
| |
| /** |
| * Allocate a page node with swap item. |
| */ |
| struct mali_page_node *_mali_mem_swap_page_node_allocate(void); |
| |
| /** |
| * Reduce the reference count of given page node and if return 0, just free this page node. |
| */ |
| _mali_osk_errcode_t _mali_mem_swap_put_page_node(struct mali_page_node *m_page); |
| |
| void _mali_mem_swap_page_node_free(struct mali_page_node *m_page); |
| |
| /** |
| * Free a swappable memory backend. |
| */ |
| u32 mali_mem_swap_free(mali_mem_swap *swap_mem); |
| |
| /** |
| * Ummap and free. |
| */ |
| u32 mali_mem_swap_release(mali_mem_backend *mem_bkend, mali_bool is_mali_mapped); |
| |
| /** |
| * Read in a page from global swap file with the pre-allcated page index. |
| */ |
| mali_bool mali_mem_swap_in_page_node(struct mali_page_node *page_node); |
| |
| int mali_mem_swap_alloc_pages(mali_mem_swap *swap_mem, u32 size, u32 *bkend_idx); |
| |
| _mali_osk_errcode_t mali_mem_swap_mali_map(mali_mem_swap *swap_mem, struct mali_session_data *session, u32 vaddr, u32 props); |
| |
| void mali_mem_swap_mali_unmap(mali_mem_allocation *alloc); |
| |
| /** |
| * When pp job created, we need swap in all of memory backend needed by this pp job. |
| */ |
| int mali_mem_swap_in_pages(struct mali_pp_job *job); |
| |
| /** |
| * Put all of memory backends used this pp job to the global swap list. |
| */ |
| int mali_mem_swap_out_pages(struct mali_pp_job *job); |
| |
| /** |
| * This will be called in page fault to process CPU read&write. |
| */ |
| int mali_mem_swap_allocate_page_on_demand(mali_mem_backend *mem_bkend, u32 offset, struct page **pagep); |
| |
| /** |
| * Used to process cow on demand for swappable memory backend. |
| */ |
| int mali_mem_swap_cow_page_on_demand(mali_mem_backend *mem_bkend, u32 offset, struct page **pagep); |
| |
| #ifdef MALI_MEM_SWAP_TRACKING |
| void mali_mem_swap_tracking(u32 *swap_pool_size, u32 *unlock_size); |
| #endif |
| #endif /* __MALI_MEMORY_SWAP_ALLOC_H__ */ |
| |