2 * This confidential and proprietary software may be used only as
3 * authorised by a licensing agreement from ARM Limited
4 * (C) COPYRIGHT 2013 ARM Limited
6 * The entire notice above must be reproduced on all authorised
7 * copies and copies may only be made to the extent permitted
8 * by a licensing agreement from ARM Limited.
12 #include "mali_memory.h"
13 #include "mali_kernel_descriptor_mapping.h"
14 #include "mali_mem_validation.h"
15 #include "mali_uk_types.h"
17 void mali_mem_external_release(mali_mem_allocation *descriptor)
19 MALI_DEBUG_ASSERT(MALI_MEM_EXTERNAL == descriptor->type);
21 mali_mem_mali_map_free(descriptor);
24 _mali_osk_errcode_t _mali_ukk_map_external_mem(_mali_uk_map_external_mem_s *args)
26 struct mali_session_data *session;
27 mali_mem_allocation * descriptor;
29 _mali_osk_errcode_t err;
31 MALI_DEBUG_ASSERT_POINTER(args);
32 MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS);
34 session = (struct mali_session_data *)args->ctx;
35 MALI_CHECK_NON_NULL(session, _MALI_OSK_ERR_INVALID_ARGS);
38 /* NULL might be a valid Mali address */
39 if (! args->size) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
41 /* size must be a multiple of the system page size */
42 if (args->size % _MALI_OSK_MALI_PAGE_SIZE) MALI_ERROR(_MALI_OSK_ERR_INVALID_ARGS);
45 ("Requested to map physical memory 0x%x-0x%x into virtual memory 0x%x\n",
46 (void*)args->phys_addr,
47 (void*)(args->phys_addr + args->size -1),
48 (void*)args->mali_address)
51 /* Validate the mali physical range */
52 if (_MALI_OSK_ERR_OK != mali_mem_validation_check(args->phys_addr, args->size)) {
53 return _MALI_OSK_ERR_FAULT;
56 descriptor = mali_mem_descriptor_create(session, MALI_MEM_EXTERNAL);
57 if (NULL == descriptor) MALI_ERROR(_MALI_OSK_ERR_NOMEM);
59 descriptor->mali_mapping.addr = args->mali_address;
60 descriptor->size = args->size;
62 if (args->flags & _MALI_MAP_EXTERNAL_MAP_GUARD_PAGE) {
63 descriptor->flags = MALI_MEM_FLAG_MALI_GUARD_PAGE;
66 _mali_osk_mutex_wait(session->memory_lock);
68 u32 virt = descriptor->mali_mapping.addr;
69 u32 phys = args->phys_addr;
70 u32 size = args->size;
72 err = mali_mem_mali_map_prepare(descriptor);
73 if (_MALI_OSK_ERR_OK != err) {
74 _mali_osk_mutex_signal(session->memory_lock);
75 mali_mem_descriptor_destroy(descriptor);
76 return _MALI_OSK_ERR_NOMEM;
79 mali_mmu_pagedir_update(session->page_directory, virt, phys, size, MALI_MMU_FLAGS_DEFAULT);
81 if (descriptor->flags & MALI_MEM_FLAG_MALI_GUARD_PAGE) {
82 mali_mmu_pagedir_update(session->page_directory, virt + size, phys, _MALI_OSK_MALI_PAGE_SIZE, MALI_MMU_FLAGS_DEFAULT);
85 _mali_osk_mutex_signal(session->memory_lock);
87 if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_allocate_mapping(session->descriptor_mapping, descriptor, &md)) {
88 _mali_osk_mutex_wait(session->memory_lock);
89 mali_mem_external_release(descriptor);
90 _mali_osk_mutex_signal(session->memory_lock);
91 mali_mem_descriptor_destroy(descriptor);
92 MALI_ERROR(_MALI_OSK_ERR_FAULT);
100 _mali_osk_errcode_t _mali_ukk_unmap_external_mem( _mali_uk_unmap_external_mem_s *args )
102 mali_mem_allocation * descriptor;
104 struct mali_session_data *session;
106 MALI_DEBUG_ASSERT_POINTER(args);
107 MALI_CHECK_NON_NULL(args->ctx, _MALI_OSK_ERR_INVALID_ARGS);
109 session = (struct mali_session_data *)args->ctx;
110 MALI_CHECK_NON_NULL(session, _MALI_OSK_ERR_INVALID_ARGS);
112 if (_MALI_OSK_ERR_OK != mali_descriptor_mapping_get(session->descriptor_mapping, args->cookie, (void**)&descriptor)) {
113 MALI_DEBUG_PRINT(1, ("Invalid memory descriptor %d used to unmap external memory\n", args->cookie));
114 MALI_ERROR(_MALI_OSK_ERR_FAULT);
117 old_value = mali_descriptor_mapping_free(session->descriptor_mapping, args->cookie);
119 if (NULL != old_value) {
120 _mali_osk_mutex_wait(session->memory_lock);
121 mali_mem_external_release(descriptor);
122 _mali_osk_mutex_signal(session->memory_lock);
123 mali_mem_descriptor_destroy(descriptor);