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/*
*
* (C) COPYRIGHT 2012-2014,2017 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
* SPDX-License-Identifier: GPL-2.0
*
*/
#ifndef _KBASE_MEM_LOWLEVEL_H
#define _KBASE_MEM_LOWLEVEL_H
#ifndef _KBASE_H_
#error "Don't include this file directly, use mali_kbase.h instead"
#endif
#include <linux/dma-mapping.h>
/**
* @brief Flags for kbase_phy_allocator_pages_alloc
*/
#define KBASE_PHY_PAGES_FLAG_DEFAULT (0) /** Default allocation flag */
#define KBASE_PHY_PAGES_FLAG_CLEAR (1 << 0) /** Clear the pages after allocation */
#define KBASE_PHY_PAGES_FLAG_POISON (1 << 1) /** Fill the memory with a poison value */
#define KBASE_PHY_PAGES_SUPPORTED_FLAGS (KBASE_PHY_PAGES_FLAG_DEFAULT|KBASE_PHY_PAGES_FLAG_CLEAR|KBASE_PHY_PAGES_FLAG_POISON)
#define KBASE_PHY_PAGES_POISON_VALUE 0xFD /** Value to fill the memory with when KBASE_PHY_PAGES_FLAG_POISON is set */
enum kbase_sync_type {
KBASE_SYNC_TO_CPU,
KBASE_SYNC_TO_DEVICE
};
struct tagged_addr { phys_addr_t tagged_addr; };
#define HUGE_PAGE (1u << 0)
#define HUGE_HEAD (1u << 1)
#define FROM_PARTIAL (1u << 2)
static inline phys_addr_t as_phys_addr_t(struct tagged_addr t)
{
return t.tagged_addr & PAGE_MASK;
}
static inline struct tagged_addr as_tagged(phys_addr_t phys)
{
struct tagged_addr t;
t.tagged_addr = phys & PAGE_MASK;
return t;
}
static inline struct tagged_addr as_tagged_tag(phys_addr_t phys, int tag)
{
struct tagged_addr t;
t.tagged_addr = (phys & PAGE_MASK) | (tag & ~PAGE_MASK);
return t;
}
static inline bool is_huge(struct tagged_addr t)
{
return t.tagged_addr & HUGE_PAGE;
}
static inline bool is_huge_head(struct tagged_addr t)
{
int mask = HUGE_HEAD | HUGE_PAGE;
return mask == (t.tagged_addr & mask);
}
static inline bool is_partial(struct tagged_addr t)
{
return t.tagged_addr & FROM_PARTIAL;
}
#endif /* _KBASE_LOWLEVEL_H */
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