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/*
* 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.
*/
#include "mali_kernel_common.h"
#include "mali_osk.h"
#include "mali_ukk.h"
#include "mali_memory.h"
#include "mali_mem_validation.h"
#include "mali_uk_types.h"
void mali_mem_unbind_ext_buf(mali_mem_backend *mem_backend)
{
mali_mem_allocation *alloc;
struct mali_session_data *session;
MALI_DEBUG_ASSERT_POINTER(mem_backend);
alloc = mem_backend->mali_allocation;
MALI_DEBUG_ASSERT_POINTER(alloc);
MALI_DEBUG_ASSERT(MALI_MEM_EXTERNAL == mem_backend->type);
session = alloc->session;
MALI_DEBUG_ASSERT_POINTER(session);
mali_session_memory_lock(session);
mali_mem_mali_map_free(session, alloc->psize, alloc->mali_vma_node.vm_node.start,
alloc->flags);
mali_session_memory_unlock(session);
}
_mali_osk_errcode_t mali_mem_bind_ext_buf(mali_mem_allocation *alloc,
mali_mem_backend *mem_backend,
u32 phys_addr,
u32 flag)
{
struct mali_session_data *session;
_mali_osk_errcode_t err;
u32 virt, phys, size;
MALI_DEBUG_ASSERT_POINTER(mem_backend);
MALI_DEBUG_ASSERT_POINTER(alloc);
size = alloc->psize;
session = (struct mali_session_data *)(uintptr_t)alloc->session;
MALI_CHECK_NON_NULL(session, _MALI_OSK_ERR_INVALID_ARGS);
/* check arguments */
/* NULL might be a valid Mali address */
if (!size) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
/* size must be a multiple of the system page size */
if (size % _MALI_OSK_MALI_PAGE_SIZE) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
#if 0
/* Validate the mali physical range */
if (_MALI_OSK_ERR_OK != mali_mem_validation_check(phys_addr, size)) {
return _MALI_OSK_ERR_FAULT;
}
#endif
if (flag & _MALI_MAP_EXTERNAL_MAP_GUARD_PAGE) {
alloc->flags |= MALI_MEM_FLAG_MALI_GUARD_PAGE;
}
mali_session_memory_lock(session);
virt = alloc->mali_vma_node.vm_node.start;
phys = phys_addr;
err = mali_mem_mali_map_prepare(alloc);
if (_MALI_OSK_ERR_OK != err) {
mali_session_memory_unlock(session);
return _MALI_OSK_ERR_NOMEM;
}
mali_mmu_pagedir_update(session->page_directory, virt, phys, size, MALI_MMU_FLAGS_DEFAULT);
if (alloc->flags & MALI_MEM_FLAG_MALI_GUARD_PAGE) {
mali_mmu_pagedir_update(session->page_directory, virt + size, phys, _MALI_OSK_MALI_PAGE_SIZE, MALI_MMU_FLAGS_DEFAULT);
}
MALI_DEBUG_PRINT(3,
("Requested to map physical memory 0x%x-0x%x into virtual memory 0x%x\n",
phys_addr, (phys_addr + size - 1),
virt));
mali_session_memory_unlock(session);
MALI_SUCCESS;
}
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