/*
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* Copyright (C) 2013-2017 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "mali_kernel_common.h"
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#include "mali_osk.h"
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#include "mali_ukk.h"
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#include "mali_memory.h"
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#include "mali_mem_validation.h"
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#include "mali_uk_types.h"
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void mali_mem_unbind_ext_buf(mali_mem_backend *mem_backend)
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{
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mali_mem_allocation *alloc;
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struct mali_session_data *session;
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MALI_DEBUG_ASSERT_POINTER(mem_backend);
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alloc = mem_backend->mali_allocation;
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MALI_DEBUG_ASSERT_POINTER(alloc);
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MALI_DEBUG_ASSERT(MALI_MEM_EXTERNAL == mem_backend->type);
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session = alloc->session;
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MALI_DEBUG_ASSERT_POINTER(session);
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mali_session_memory_lock(session);
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mali_mem_mali_map_free(session, alloc->psize, alloc->mali_vma_node.vm_node.start,
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alloc->flags);
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mali_session_memory_unlock(session);
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}
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_mali_osk_errcode_t mali_mem_bind_ext_buf(mali_mem_allocation *alloc,
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mali_mem_backend *mem_backend,
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u32 phys_addr,
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u32 flag)
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{
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struct mali_session_data *session;
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_mali_osk_errcode_t err;
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u32 virt, phys, size;
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MALI_DEBUG_ASSERT_POINTER(mem_backend);
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MALI_DEBUG_ASSERT_POINTER(alloc);
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size = alloc->psize;
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session = (struct mali_session_data *)(uintptr_t)alloc->session;
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MALI_CHECK_NON_NULL(session, _MALI_OSK_ERR_INVALID_ARGS);
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/* check arguments */
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/* NULL might be a valid Mali address */
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if (!size) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
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/* size must be a multiple of the system page size */
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if (size % _MALI_OSK_MALI_PAGE_SIZE) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
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/* Validate the mali physical range */
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if (_MALI_OSK_ERR_OK != mali_mem_validation_check(phys_addr, size)) {
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return _MALI_OSK_ERR_FAULT;
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}
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if (flag & _MALI_MAP_EXTERNAL_MAP_GUARD_PAGE) {
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alloc->flags |= MALI_MEM_FLAG_MALI_GUARD_PAGE;
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}
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mali_session_memory_lock(session);
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virt = alloc->mali_vma_node.vm_node.start;
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phys = phys_addr;
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err = mali_mem_mali_map_prepare(alloc);
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if (_MALI_OSK_ERR_OK != err) {
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mali_session_memory_unlock(session);
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return _MALI_OSK_ERR_NOMEM;
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}
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mali_mmu_pagedir_update(session->page_directory, virt, phys, size, MALI_MMU_FLAGS_DEFAULT);
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if (alloc->flags & MALI_MEM_FLAG_MALI_GUARD_PAGE) {
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mali_mmu_pagedir_update(session->page_directory, virt + size, phys, _MALI_OSK_MALI_PAGE_SIZE, MALI_MMU_FLAGS_DEFAULT);
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}
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MALI_DEBUG_PRINT(3,
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("Requested to map physical memory 0x%x-0x%x into virtual memory 0x%x\n",
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phys_addr, (phys_addr + size - 1),
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virt));
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mali_session_memory_unlock(session);
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MALI_SUCCESS;
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}
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