1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/include/hmm/hmm_pool.h b/drivers/staging/media/atomisp/include/hmm/hmm_pool.h
new file mode 100644
index 000000000000..8caf00502d74
--- /dev/null
+++ b/drivers/staging/media/atomisp/include/hmm/hmm_pool.h
@@ -0,0 +1,115 @@
+/*
+ * Support for Medifield PNW Camera Imaging ISP subsystem.
+ *
+ * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
+ *
+ * Copyright (c) 2010 Silicon Hive www.siliconhive.com.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ *
+ */
+#ifndef __HMM_POOL_H__
+#define __HMM_POOL_H__
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/kref.h>
+#include "hmm_common.h"
+#include "hmm/hmm_bo.h"
+
+#define ALLOC_PAGE_FAIL_NUM		5
+
+enum hmm_pool_type {
+	HMM_POOL_TYPE_RESERVED,
+	HMM_POOL_TYPE_DYNAMIC,
+};
+
+/**
+ * struct hmm_pool_ops  -  memory pool callbacks.
+ *
+ * @pool_init:		   initialize the memory pool.
+ * @pool_exit:		   uninitialize the memory pool.
+ * @pool_alloc_pages:	   allocate pages from memory pool.
+ * @pool_free_pages:	   free pages to memory pool.
+ * @pool_inited:	   check whether memory pool is initialized.
+ */
+struct hmm_pool_ops {
+	int (*pool_init)(void **pool, unsigned int pool_size);
+	void (*pool_exit)(void **pool);
+	unsigned int (*pool_alloc_pages)(void *pool,
+					 struct hmm_page_object *page_obj,
+					 unsigned int size, bool cached);
+	void (*pool_free_pages)(void *pool,
+				struct hmm_page_object *page_obj);
+	int (*pool_inited)(void *pool);
+};
+
+struct hmm_pool {
+	struct hmm_pool_ops	*pops;
+
+	void			*pool_info;
+};
+
+/**
+ * struct hmm_reserved_pool_info  - represents reserved pool private data.
+ * @pages:			    a array that store physical pages.
+ *				    The array is as reserved memory pool.
+ * @index:			    to indicate the first blank page number
+ *				    in reserved memory pool(pages array).
+ * @pgnr:			    the valid page amount in reserved memory
+ *				    pool.
+ * @list_lock:			    list lock is used to protect the operation
+ *				    to reserved memory pool.
+ * @flag:			    reserved memory pool state flag.
+ */
+struct hmm_reserved_pool_info {
+	struct page		**pages;
+
+	unsigned int		index;
+	unsigned int		pgnr;
+	spinlock_t		list_lock;
+	bool			initialized;
+};
+
+/**
+ * struct hmm_dynamic_pool_info  -  represents dynamic pool private data.
+ * @pages_list:			    a list that store physical pages.
+ *				    The pages list is as dynamic memory pool.
+ * @list_lock:			    list lock is used to protect the operation
+ *				    to dynamic memory pool.
+ * @flag:			    dynamic memory pool state flag.
+ * @pgptr_cache:		    struct kmem_cache, manages a cache.
+ */
+struct hmm_dynamic_pool_info {
+	struct list_head	pages_list;
+
+	/* list lock is used to protect the free pages block lists */
+	spinlock_t		list_lock;
+
+	struct kmem_cache	*pgptr_cache;
+	bool			initialized;
+
+	unsigned int		pool_size;
+	unsigned int		pgnr;
+};
+
+struct hmm_page {
+	struct page		*page;
+	struct list_head	list;
+};
+
+extern struct hmm_pool_ops	reserved_pops;
+extern struct hmm_pool_ops	dynamic_pops;
+
+#endif