2 * Copyright (C) 2011-2012 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.
12 #include "mali_osk_list.h"
14 #include "ump_uk_types.h"
16 #include "ump_kernel_interface_ref_drv.h"
17 #include "ump_kernel_common.h"
18 #include "ump_kernel_descriptor_mapping.h"
20 #define UMP_MINIMUM_SIZE 4096
21 #define UMP_MINIMUM_SIZE_MASK (~(UMP_MINIMUM_SIZE-1))
22 #define UMP_SIZE_ALIGN(x) (((x)+UMP_MINIMUM_SIZE-1)&UMP_MINIMUM_SIZE_MASK)
23 #define UMP_ADDR_ALIGN_OFFSET(x) ((x)&(UMP_MINIMUM_SIZE-1))
24 static void phys_blocks_release(void * ctx, struct ump_dd_mem * descriptor);
26 UMP_KERNEL_API_EXPORT ump_dd_handle ump_dd_handle_create_from_phys_blocks(ump_dd_physical_block * blocks, unsigned long num_blocks)
29 unsigned long size_total = 0;
33 /* Go through the input blocks and verify that they are sane */
34 for (i=0; i < num_blocks; i++)
36 unsigned long addr = blocks[i].addr;
37 unsigned long size = blocks[i].size;
39 DBG_MSG(5, ("Adding physical memory to new handle. Address: 0x%08lx, size: %lu\n", addr, size));
40 size_total += blocks[i].size;
42 if (0 != UMP_ADDR_ALIGN_OFFSET(addr))
44 MSG_ERR(("Trying to create UMP memory from unaligned physical address. Address: 0x%08lx\n", addr));
45 return UMP_DD_HANDLE_INVALID;
48 if (0 != UMP_ADDR_ALIGN_OFFSET(size))
50 MSG_ERR(("Trying to create UMP memory with unaligned size. Size: %lu\n", size));
51 return UMP_DD_HANDLE_INVALID;
55 /* Allocate the ump_dd_mem struct for this allocation */
56 mem = _mali_osk_malloc(sizeof(*mem));
59 DBG_MSG(1, ("Could not allocate ump_dd_mem in ump_dd_handle_create_from_phys_blocks()\n"));
60 return UMP_DD_HANDLE_INVALID;
63 /* Find a secure ID for this allocation */
64 _mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
65 map_id = ump_descriptor_mapping_allocate_mapping(device.secure_id_map, (void*) mem);
69 _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
71 DBG_MSG(1, ("Failed to allocate secure ID in ump_dd_handle_create_from_phys_blocks()\n"));
72 return UMP_DD_HANDLE_INVALID;
75 /* Now, make a copy of the block information supplied by the user */
76 mem->block_array = _mali_osk_malloc(sizeof(ump_dd_physical_block)* num_blocks);
77 if (NULL == mem->block_array)
79 ump_descriptor_mapping_free(device.secure_id_map, map_id);
80 _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
82 DBG_MSG(1, ("Could not allocate a mem handle for function ump_dd_handle_create_from_phys_blocks().\n"));
83 return UMP_DD_HANDLE_INVALID;
86 _mali_osk_memcpy(mem->block_array, blocks, sizeof(ump_dd_physical_block) * num_blocks);
88 /* And setup the rest of the ump_dd_mem struct */
89 _mali_osk_atomic_init(&mem->ref_count, 1);
90 mem->secure_id = (ump_secure_id)map_id;
91 mem->size_bytes = size_total;
92 mem->nr_blocks = num_blocks;
93 mem->backend_info = NULL;
95 mem->release_func = phys_blocks_release;
96 /* For now UMP handles created by ump_dd_handle_create_from_phys_blocks() is forced to be Uncached */
98 mem->hw_device = _UMP_UK_USED_BY_CPU;
99 mem->lock_usage = UMP_NOT_LOCKED;
101 _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
102 DBG_MSG(3, ("UMP memory created. ID: %u, size: %lu\n", mem->secure_id, mem->size_bytes));
104 return (ump_dd_handle)mem;
107 static void phys_blocks_release(void * ctx, struct ump_dd_mem * descriptor)
109 _mali_osk_free(descriptor->block_array);
110 descriptor->block_array = NULL;
113 _mali_osk_errcode_t _ump_ukk_allocate( _ump_uk_allocate_s *user_interaction )
115 ump_session_data * session_data = NULL;
116 ump_dd_mem *new_allocation = NULL;
117 ump_session_memory_list_element * session_memory_element = NULL;
120 DEBUG_ASSERT_POINTER( user_interaction );
121 DEBUG_ASSERT_POINTER( user_interaction->ctx );
123 session_data = (ump_session_data *) user_interaction->ctx;
125 session_memory_element = _mali_osk_calloc( 1, sizeof(ump_session_memory_list_element));
126 if (NULL == session_memory_element)
128 DBG_MSG(1, ("Failed to allocate ump_session_memory_list_element in ump_ioctl_allocate()\n"));
129 return _MALI_OSK_ERR_NOMEM;
133 new_allocation = _mali_osk_calloc( 1, sizeof(ump_dd_mem));
134 if (NULL==new_allocation)
136 _mali_osk_free(session_memory_element);
137 DBG_MSG(1, ("Failed to allocate ump_dd_mem in _ump_ukk_allocate()\n"));
138 return _MALI_OSK_ERR_NOMEM;
141 /* Create a secure ID for this allocation */
142 _mali_osk_lock_wait(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
143 map_id = ump_descriptor_mapping_allocate_mapping(device.secure_id_map, (void*)new_allocation);
147 _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
148 _mali_osk_free(session_memory_element);
149 _mali_osk_free(new_allocation);
150 DBG_MSG(1, ("Failed to allocate secure ID in ump_ioctl_allocate()\n"));
151 return - _MALI_OSK_ERR_INVALID_FUNC;
154 /* Initialize the part of the new_allocation that we know so for */
155 new_allocation->secure_id = (ump_secure_id)map_id;
156 _mali_osk_atomic_init(&new_allocation->ref_count,1);
157 if ( 0==(UMP_REF_DRV_UK_CONSTRAINT_USE_CACHE & user_interaction->constraints) )
158 new_allocation->is_cached = 0;
159 else new_allocation->is_cached = 1;
161 /* special case a size of 0, we should try to emulate what malloc does in this case, which is to return a valid pointer that must be freed, but can't be dereferences */
162 if (0 == user_interaction->size)
164 user_interaction->size = 1; /* emulate by actually allocating the minimum block size */
167 new_allocation->size_bytes = UMP_SIZE_ALIGN(user_interaction->size); /* Page align the size */
168 new_allocation->lock_usage = UMP_NOT_LOCKED;
170 /* Now, ask the active memory backend to do the actual memory allocation */
171 if (!device.backend->allocate( device.backend->ctx, new_allocation ) )
173 DBG_MSG(3, ("OOM: No more UMP memory left. Failed to allocate memory in ump_ioctl_allocate(). Size: %lu, requested size: %lu\n", new_allocation->size_bytes, (unsigned long)user_interaction->size));
174 ump_descriptor_mapping_free(device.secure_id_map, map_id);
175 _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
176 _mali_osk_free(new_allocation);
177 _mali_osk_free(session_memory_element);
178 return _MALI_OSK_ERR_INVALID_FUNC;
180 new_allocation->hw_device = _UMP_UK_USED_BY_CPU;
181 new_allocation->ctx = device.backend->ctx;
182 new_allocation->release_func = device.backend->release;
184 _mali_osk_lock_signal(device.secure_id_map_lock, _MALI_OSK_LOCKMODE_RW);
186 /* Initialize the session_memory_element, and add it to the session object */
187 session_memory_element->mem = new_allocation;
188 _mali_osk_lock_wait(session_data->lock, _MALI_OSK_LOCKMODE_RW);
189 _mali_osk_list_add(&(session_memory_element->list), &(session_data->list_head_session_memory_list));
190 _mali_osk_lock_signal(session_data->lock, _MALI_OSK_LOCKMODE_RW);
192 user_interaction->secure_id = new_allocation->secure_id;
193 user_interaction->size = new_allocation->size_bytes;
194 DBG_MSG(3, ("UMP memory allocated. ID: %u, size: %lu\n", new_allocation->secure_id, new_allocation->size_bytes));
196 return _MALI_OSK_ERR_OK;