1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/gpu/arm/utgard/linux/mali_memory_swap_alloc.h b/drivers/gpu/arm/utgard/linux/mali_memory_swap_alloc.h
new file mode 100644
index 000000000000..a393ecce3a00
--- /dev/null
+++ b/drivers/gpu/arm/utgard/linux/mali_memory_swap_alloc.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2013-2015 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__ */
+