2 * Copyright (C) 2013-2014 ARM Limited. All rights reserved.
4 * This program is free software and is provided to you under the terms of the GNU General Public License version 2
5 * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
7 * A copy of the licence is included with the program, and can also be obtained from Free Software
8 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
11 #include "mali_kernel_common.h"
14 #include "mali_memory.h"
15 #include "mali_kernel_descriptor_mapping.h"
16 #include "mali_mem_validation.h"
17 #include "mali_uk_types.h"
19 void mali_mem_external_release(mali_mem_allocation *descriptor)
21 MALI_DEBUG_ASSERT(MALI_MEM_EXTERNAL == descriptor->type);
23 mali_mem_mali_map_free(descriptor);
26 _mali_osk_errcode_t _mali_ukk_map_external_mem(_mali_uk_map_external_mem_s *args)
28 struct mali_session_data *session;
29 mali_mem_allocation *descriptor;
31 _mali_osk_errcode_t err;
33 MALI_DEBUG_ASSERT_POINTER(args);
35 session = (struct mali_session_data *)(uintptr_t)args->ctx;
36 MALI_CHECK_NON_NULL(session, _MALI_OSK_ERR_INVALID_ARGS);
39 /* NULL might be a valid Mali address */
40 if (! args->size) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
42 /* size must be a multiple of the system page size */
43 if (args->size % _MALI_OSK_MALI_PAGE_SIZE) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
46 ("Requested to map physical memory 0x%x-0x%x into virtual memory 0x%x\n",
47 args->phys_addr, (args->phys_addr + args->size - 1),
50 /* Validate the mali physical range */
51 if (_MALI_OSK_ERR_OK != mali_mem_validation_check(args->phys_addr, args->size)) {
52 return _MALI_OSK_ERR_FAULT;
55 descriptor = mali_mem_descriptor_create(session, MALI_MEM_EXTERNAL);
56 if (NULL == descriptor) MALI_ERROR(_MALI_OSK_ERR_NOMEM);
58 descriptor->mali_mapping.addr = args->mali_address;
59 descriptor->size = args->size;
61 if (args->flags & _MALI_MAP_EXTERNAL_MAP_GUARD_PAGE) {
62 descriptor->flags = MALI_MEM_FLAG_MALI_GUARD_PAGE;
65 _mali_osk_mutex_wait(session->memory_lock);
67 u32 virt = descriptor->mali_mapping.addr;
68 u32 phys = args->phys_addr;
69 u32 size = args->size;
71 err = mali_mem_mali_map_prepare(descriptor);
72 if (_MALI_OSK_ERR_OK != err) {
73 _mali_osk_mutex_signal(session->memory_lock);
74 mali_mem_descriptor_destroy(descriptor);
75 return _MALI_OSK_ERR_NOMEM;
78 mali_mmu_pagedir_update(session->page_directory, virt, phys, size, MALI_MMU_FLAGS_DEFAULT);
80 if (descriptor->flags & MALI_MEM_FLAG_MALI_GUARD_PAGE) {
81 mali_mmu_pagedir_update(session->page_directory, virt + size, phys, _MALI_OSK_MALI_PAGE_SIZE, MALI_MMU_FLAGS_DEFAULT);
84 _mali_osk_mutex_signal(session->memory_lock);
86 if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_allocate_mapping(session->descriptor_mapping, descriptor, &md)) {
87 _mali_osk_mutex_wait(session->memory_lock);
88 mali_mem_external_release(descriptor);
89 _mali_osk_mutex_signal(session->memory_lock);
90 mali_mem_descriptor_destroy(descriptor);
91 MALI_ERROR(_MALI_OSK_ERR_FAULT);
99 _mali_osk_errcode_t _mali_ukk_unmap_external_mem(_mali_uk_unmap_external_mem_s *args)
101 mali_mem_allocation *descriptor;
103 struct mali_session_data *session;
105 MALI_DEBUG_ASSERT_POINTER(args);
107 session = (struct mali_session_data *)(uintptr_t)args->ctx;
108 MALI_CHECK_NON_NULL(session, _MALI_OSK_ERR_INVALID_ARGS);
110 if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_get(session->descriptor_mapping, args->cookie, (void **)&descriptor)) {
111 MALI_DEBUG_PRINT(1, ("Invalid memory descriptor %d used to unmap external memory\n", args->cookie));
112 MALI_ERROR(_MALI_OSK_ERR_FAULT);
115 old_value = mali_descriptor_mapping_free(session->descriptor_mapping, args->cookie);
117 if (NULL != old_value) {
118 _mali_osk_mutex_wait(session->memory_lock);
119 mali_mem_external_release(descriptor);
120 _mali_osk_mutex_signal(session->memory_lock);
121 mali_mem_descriptor_destroy(descriptor);