| /* |
| * Copyright (C) 2010-2014, 2016 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_osk.h" |
| #include "mali_osk_list.h" |
| #include "ump_osk.h" |
| #include "ump_uk_types.h" |
| #include "ump_kernel_interface.h" |
| #include "ump_kernel_common.h" |
| #include "ump_kernel_random_mapping.h" |
| |
| |
| |
| /* ---------------- UMP kernel space API functions follows ---------------- */ |
| |
| |
| |
| UMP_KERNEL_API_EXPORT ump_secure_id ump_dd_secure_id_get(ump_dd_handle memh) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *)memh; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| DBG_MSG(5, ("Returning secure ID. ID: %u\n", mem->secure_id)); |
| |
| return mem->secure_id; |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT ump_dd_handle ump_dd_handle_create_from_secure_id(ump_secure_id secure_id) |
| { |
| ump_dd_mem *mem; |
| |
| DBG_MSG(5, ("Getting handle from secure ID. ID: %u\n", secure_id)); |
| mem = ump_random_mapping_get(device.secure_id_map, (int)secure_id); |
| if (NULL == mem) { |
| DBG_MSG(1, ("Secure ID not found. ID: %u\n", secure_id)); |
| return UMP_DD_HANDLE_INVALID; |
| } |
| |
| /* Keep the reference taken in ump_random_mapping_get() */ |
| |
| return (ump_dd_handle)mem; |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT unsigned long ump_dd_phys_block_count_get(ump_dd_handle memh) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *) memh; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| return mem->nr_blocks; |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT ump_dd_status_code ump_dd_phys_blocks_get(ump_dd_handle memh, ump_dd_physical_block *blocks, unsigned long num_blocks) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *)memh; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| if (blocks == NULL) { |
| DBG_MSG(1, ("NULL parameter in ump_dd_phys_blocks_get()\n")); |
| return UMP_DD_INVALID; |
| } |
| |
| if (mem->nr_blocks != num_blocks) { |
| DBG_MSG(1, ("Specified number of blocks do not match actual number of blocks\n")); |
| return UMP_DD_INVALID; |
| } |
| |
| DBG_MSG(5, ("Returning physical block information. ID: %u\n", mem->secure_id)); |
| |
| _mali_osk_memcpy(blocks, mem->block_array, sizeof(ump_dd_physical_block) * mem->nr_blocks); |
| |
| return UMP_DD_SUCCESS; |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT ump_dd_status_code ump_dd_phys_block_get(ump_dd_handle memh, unsigned long index, ump_dd_physical_block *block) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *)memh; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| if (block == NULL) { |
| DBG_MSG(1, ("NULL parameter in ump_dd_phys_block_get()\n")); |
| return UMP_DD_INVALID; |
| } |
| |
| if (index >= mem->nr_blocks) { |
| DBG_MSG(5, ("Invalid index specified in ump_dd_phys_block_get()\n")); |
| return UMP_DD_INVALID; |
| } |
| |
| DBG_MSG(5, ("Returning physical block information. ID: %u, index: %lu\n", mem->secure_id, index)); |
| |
| *block = mem->block_array[index]; |
| |
| return UMP_DD_SUCCESS; |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT unsigned long ump_dd_size_get(ump_dd_handle memh) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *)memh; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| DBG_MSG(5, ("Returning size. ID: %u, size: %lu\n", mem->secure_id, mem->size_bytes)); |
| |
| return mem->size_bytes; |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT void ump_dd_reference_add(ump_dd_handle memh) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *)memh; |
| int new_ref; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| new_ref = _ump_osk_atomic_inc_and_read(&mem->ref_count); |
| |
| DBG_MSG(5, ("Memory reference incremented. ID: %u, new value: %d\n", mem->secure_id, new_ref)); |
| } |
| |
| |
| |
| UMP_KERNEL_API_EXPORT void ump_dd_reference_release(ump_dd_handle memh) |
| { |
| ump_dd_mem *mem = (ump_dd_mem *)memh; |
| |
| DEBUG_ASSERT_POINTER(mem); |
| |
| ump_random_mapping_put(mem); |
| } |
| |
| |
| |
| /* --------------- Handling of user space requests follows --------------- */ |
| |
| |
| _mali_osk_errcode_t _ump_uku_get_api_version(_ump_uk_api_version_s *args) |
| { |
| ump_session_data *session_data; |
| |
| DEBUG_ASSERT_POINTER(args); |
| DEBUG_ASSERT_POINTER(args->ctx); |
| |
| session_data = (ump_session_data *)args->ctx; |
| |
| /* check compatability */ |
| if (args->version == UMP_IOCTL_API_VERSION) { |
| DBG_MSG(3, ("API version set to newest %d (compatible)\n", |
| GET_VERSION(args->version))); |
| args->compatible = 1; |
| session_data->api_version = args->version; |
| } else { |
| DBG_MSG(2, ("API version set to %d (incompatible with client version %d)\n", |
| GET_VERSION(UMP_IOCTL_API_VERSION), GET_VERSION(args->version))); |
| args->compatible = 0; |
| args->version = UMP_IOCTL_API_VERSION; /* report our version */ |
| } |
| |
| return _MALI_OSK_ERR_OK; |
| } |
| |
| |
| _mali_osk_errcode_t _ump_ukk_release(_ump_uk_release_s *release_info) |
| { |
| ump_session_memory_list_element *session_memory_element; |
| ump_session_memory_list_element *tmp; |
| ump_session_data *session_data; |
| _mali_osk_errcode_t ret = _MALI_OSK_ERR_INVALID_FUNC; |
| int secure_id; |
| |
| DEBUG_ASSERT_POINTER(release_info); |
| DEBUG_ASSERT_POINTER(release_info->ctx); |
| |
| /* Retreive the session data */ |
| session_data = (ump_session_data *)release_info->ctx; |
| |
| /* If there are many items in the memory session list we |
| * could be de-referencing this pointer a lot so keep a local copy |
| */ |
| secure_id = release_info->secure_id; |
| |
| DBG_MSG(4, ("Releasing memory with IOCTL, ID: %u\n", secure_id)); |
| |
| /* Iterate through the memory list looking for the requested secure ID */ |
| _mali_osk_mutex_wait(session_data->lock); |
| _MALI_OSK_LIST_FOREACHENTRY(session_memory_element, tmp, &session_data->list_head_session_memory_list, ump_session_memory_list_element, list) { |
| if (session_memory_element->mem->secure_id == secure_id) { |
| ump_dd_mem *release_mem; |
| |
| release_mem = session_memory_element->mem; |
| _mali_osk_list_del(&session_memory_element->list); |
| ump_dd_reference_release(release_mem); |
| _mali_osk_free(session_memory_element); |
| |
| ret = _MALI_OSK_ERR_OK; |
| break; |
| } |
| } |
| |
| _mali_osk_mutex_signal(session_data->lock); |
| DBG_MSG_IF(1, _MALI_OSK_ERR_OK != ret, ("UMP memory with ID %u does not belong to this session.\n", secure_id)); |
| |
| DBG_MSG(4, ("_ump_ukk_release() returning 0x%x\n", ret)); |
| return ret; |
| } |
| |
| _mali_osk_errcode_t _ump_ukk_size_get(_ump_uk_size_get_s *user_interaction) |
| { |
| ump_dd_mem *mem; |
| _mali_osk_errcode_t ret = _MALI_OSK_ERR_FAULT; |
| |
| DEBUG_ASSERT_POINTER(user_interaction); |
| |
| /* We lock the mappings so things don't get removed while we are looking for the memory */ |
| mem = ump_random_mapping_get(device.secure_id_map, user_interaction->secure_id); |
| if (NULL != mem) { |
| user_interaction->size = mem->size_bytes; |
| DBG_MSG(4, ("Returning size. ID: %u, size: %lu ", |
| (ump_secure_id)user_interaction->secure_id, |
| (unsigned long)user_interaction->size)); |
| ump_random_mapping_put(mem); |
| ret = _MALI_OSK_ERR_OK; |
| } else { |
| user_interaction->size = 0; |
| DBG_MSG(1, ("Failed to look up mapping in ump_ioctl_size_get(). ID: %u\n", |
| (ump_secure_id)user_interaction->secure_id)); |
| } |
| |
| return ret; |
| } |
| |
| |
| |
| void _ump_ukk_msync(_ump_uk_msync_s *args) |
| { |
| ump_dd_mem *mem = NULL; |
| void *virtual = NULL; |
| u32 size = 0; |
| u32 offset = 0; |
| |
| mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id); |
| if (NULL == mem) { |
| DBG_MSG(1, ("Failed to look up mapping in _ump_ukk_msync(). ID: %u\n", |
| (ump_secure_id)args->secure_id)); |
| return; |
| } |
| |
| /* Returns the cache settings back to Userspace */ |
| args->is_cached = mem->is_cached; |
| |
| /* If this flag is the only one set, we should not do the actual flush, only the readout */ |
| if (_UMP_UK_MSYNC_READOUT_CACHE_ENABLED == args->op) { |
| DBG_MSG(3, ("_ump_ukk_msync READOUT ID: %u Enabled: %d\n", (ump_secure_id)args->secure_id, mem->is_cached)); |
| goto msync_release_and_return; |
| } |
| |
| /* Nothing to do if the memory is not caches */ |
| if (0 == mem->is_cached) { |
| DBG_MSG(3, ("_ump_ukk_msync IGNORING ID: %u Enabled: %d OP: %d\n", (ump_secure_id)args->secure_id, mem->is_cached, args->op)); |
| goto msync_release_and_return; |
| } |
| DBG_MSG(3, ("UMP[%02u] _ump_ukk_msync Flush OP: %d Address: 0x%08x Mapping: 0x%08x\n", |
| (ump_secure_id)args->secure_id, args->op, args->address, args->mapping)); |
| |
| if (args->address) { |
| virtual = (void *)((u32)args->address); |
| offset = (u32)((args->address) - (args->mapping)); |
| } else { |
| /* Flush entire mapping when no address is specified. */ |
| virtual = args->mapping; |
| } |
| if (args->size) { |
| size = args->size; |
| } else { |
| /* Flush entire mapping when no size is specified. */ |
| size = mem->size_bytes - offset; |
| } |
| |
| if ((offset + size) > mem->size_bytes) { |
| DBG_MSG(1, ("Trying to flush more than the entire UMP allocation: offset: %u + size: %u > %u\n", offset, size, mem->size_bytes)); |
| goto msync_release_and_return; |
| } |
| |
| /* The actual cache flush - Implemented for each OS*/ |
| _ump_osk_msync(mem, virtual, offset, size, args->op, NULL); |
| |
| msync_release_and_return: |
| ump_random_mapping_put(mem); |
| return; |
| } |
| |
| void _ump_ukk_cache_operations_control(_ump_uk_cache_operations_control_s *args) |
| { |
| ump_session_data *session_data; |
| ump_uk_cache_op_control op; |
| |
| DEBUG_ASSERT_POINTER(args); |
| DEBUG_ASSERT_POINTER(args->ctx); |
| |
| op = args->op; |
| session_data = (ump_session_data *)args->ctx; |
| |
| _mali_osk_mutex_wait(session_data->lock); |
| if (op == _UMP_UK_CACHE_OP_START) { |
| session_data->cache_operations_ongoing++; |
| DBG_MSG(4, ("Cache ops start\n")); |
| if (session_data->cache_operations_ongoing != 1) { |
| DBG_MSG(2, ("UMP: Number of simultanious cache control ops: %d\n", session_data->cache_operations_ongoing)); |
| } |
| } else if (op == _UMP_UK_CACHE_OP_FINISH) { |
| DBG_MSG(4, ("Cache ops finish\n")); |
| session_data->cache_operations_ongoing--; |
| #if 0 |
| if (session_data->has_pending_level1_cache_flush) { |
| /* This function will set has_pending_level1_cache_flush=0 */ |
| _ump_osk_msync(NULL, NULL, 0, 0, _UMP_UK_MSYNC_FLUSH_L1, session_data); |
| } |
| #endif |
| |
| /* to be on the safe side: always flush l1 cache when cache operations are done */ |
| _ump_osk_msync(NULL, NULL, 0, 0, _UMP_UK_MSYNC_FLUSH_L1, session_data); |
| DBG_MSG(4, ("Cache ops finish end\n")); |
| } else { |
| DBG_MSG(1, ("Illegal call to %s at line %d\n", __FUNCTION__, __LINE__)); |
| } |
| _mali_osk_mutex_signal(session_data->lock); |
| |
| } |
| |
| void _ump_ukk_switch_hw_usage(_ump_uk_switch_hw_usage_s *args) |
| { |
| ump_dd_mem *mem = NULL; |
| ump_uk_user old_user; |
| ump_uk_msync_op cache_op = _UMP_UK_MSYNC_CLEAN_AND_INVALIDATE; |
| ump_session_data *session_data; |
| |
| DEBUG_ASSERT_POINTER(args); |
| DEBUG_ASSERT_POINTER(args->ctx); |
| |
| session_data = (ump_session_data *)args->ctx; |
| |
| mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id); |
| if (NULL == mem) { |
| DBG_MSG(1, ("Failed to look up mapping in _ump_ukk_switch_hw_usage(). ID: %u\n", |
| (ump_secure_id)args->secure_id)); |
| return; |
| } |
| |
| old_user = mem->hw_device; |
| mem->hw_device = args->new_user; |
| |
| DBG_MSG(3, ("UMP[%02u] Switch usage Start New: %s Prev: %s.\n", |
| (ump_secure_id)args->secure_id, |
| args->new_user ? "MALI" : "CPU", |
| old_user ? "MALI" : "CPU")); |
| |
| if (!mem->is_cached) { |
| DBG_MSG(3, ("UMP[%02u] Changing owner of uncached memory. Cache flushing not needed.\n", |
| (ump_secure_id)args->secure_id)); |
| goto out; |
| } |
| |
| if (old_user == args->new_user) { |
| DBG_MSG(4, ("UMP[%02u] Setting the new_user equal to previous for. Cache flushing not needed.\n", |
| (ump_secure_id)args->secure_id)); |
| goto out; |
| } |
| if ( |
| /* Previous AND new is both different from CPU */ |
| (old_user != _UMP_UK_USED_BY_CPU) && (args->new_user != _UMP_UK_USED_BY_CPU) |
| ) { |
| DBG_MSG(4, ("UMP[%02u] Previous and new user is not CPU. Cache flushing not needed.\n", |
| (ump_secure_id)args->secure_id)); |
| goto out; |
| } |
| |
| if ((old_user != _UMP_UK_USED_BY_CPU) && (args->new_user == _UMP_UK_USED_BY_CPU)) { |
| cache_op = _UMP_UK_MSYNC_INVALIDATE; |
| DBG_MSG(4, ("UMP[%02u] Cache invalidation needed\n", (ump_secure_id)args->secure_id)); |
| #ifdef UMP_SKIP_INVALIDATION |
| #error |
| DBG_MSG(4, ("UMP[%02u] Performing Cache invalidation SKIPPED\n", (ump_secure_id)args->secure_id)); |
| goto out; |
| #endif |
| } |
| |
| /* Take lock to protect: session->cache_operations_ongoing and session->has_pending_level1_cache_flush */ |
| _mali_osk_mutex_wait(session_data->lock); |
| /* Actual cache flush */ |
| _ump_osk_msync(mem, NULL, 0, mem->size_bytes, cache_op, session_data); |
| _mali_osk_mutex_signal(session_data->lock); |
| |
| out: |
| ump_random_mapping_put(mem); |
| DBG_MSG(4, ("UMP[%02u] Switch usage Finish\n", (ump_secure_id)args->secure_id)); |
| return; |
| } |
| |
| void _ump_ukk_lock(_ump_uk_lock_s *args) |
| { |
| ump_dd_mem *mem = NULL; |
| |
| mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id); |
| if (NULL == mem) { |
| DBG_MSG(1, ("UMP[%02u] Failed to look up mapping in _ump_ukk_lock(). ID: %u\n", |
| (ump_secure_id)args->secure_id)); |
| return; |
| } |
| |
| DBG_MSG(1, ("UMP[%02u] Lock. New lock flag: %d. Old Lock flag:\n", (u32)args->secure_id, (u32)args->lock_usage, (u32) mem->lock_usage)); |
| |
| mem->lock_usage = (ump_lock_usage) args->lock_usage; |
| |
| ump_random_mapping_put(mem); |
| } |
| |
| void _ump_ukk_unlock(_ump_uk_unlock_s *args) |
| { |
| ump_dd_mem *mem = NULL; |
| |
| mem = ump_random_mapping_get(device.secure_id_map, (int)args->secure_id); |
| if (NULL == mem) { |
| DBG_MSG(1, ("Failed to look up mapping in _ump_ukk_unlock(). ID: %u\n", |
| (ump_secure_id)args->secure_id)); |
| return; |
| } |
| |
| DBG_MSG(1, ("UMP[%02u] Unlocking. Old Lock flag:\n", |
| (u32)args->secure_id, (u32) mem->lock_usage)); |
| |
| mem->lock_usage = (ump_lock_usage) UMP_NOT_LOCKED; |
| |
| ump_random_mapping_put(mem); |
| } |