339 lines
9.5 KiB
C
339 lines
9.5 KiB
C
/*
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* Copyright (C) 2010-2013 ARM Limited. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file ump_arch.c
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*
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* UMP arch layer for UMP-UDD
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*/
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#include "ump.h"
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#include "ump_arch.h"
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#include <ump/ump_debug.h>
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#include <ump/ump_uk_types.h>
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#include "../os/ump_uku.h"
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#include <cutils/log.h>
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/** Pointer to an OS-Specific context that we should pass in _uku_ calls */
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void *ump_uk_ctx = NULL;
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/** Reference counting of ump_arch_open() and ump_arch_close(). */
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static volatile int ump_ref_count = 0;
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/** Lock for critical section in open/close */
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_ump_osu_lock_t * ump_lock_arch = NULL;
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ump_result ump_arch_open(void)
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{
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ump_result retval = UMP_OK;
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_ump_osu_lock_auto_init( &ump_lock_arch, _UMP_OSU_LOCKFLAG_DEFAULT, 0, 0 );
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/* Check that the lock was initialized */
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if (NULL == ump_lock_arch)
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{
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UMP_DEBUG_PRINT(1, ("UMP: ump_arch_open() failed to init lock\n"));
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return UMP_ERROR;
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}
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/* Attempt to obtain a lock */
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if( _UMP_OSU_ERR_OK != _ump_osu_lock_wait( ump_lock_arch, _UMP_OSU_LOCKMODE_RW ) )
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{
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UMP_DEBUG_PRINT(1, ("UMP: ump_arch_open() failed to acquire lock\n"));
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return UMP_ERROR;
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}
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/* ASSERT NEEDED */
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UMP_DEBUG_ASSERT(0 <= ump_ref_count, ("UMP: Reference count invalid at _ump_base_arch_open()"));
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ump_ref_count++;
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if (1 == ump_ref_count)
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{
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/* We are the first, open the UMP device driver */
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if (_UMP_OSU_ERR_OK != _ump_uku_open( &ump_uk_ctx ))
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{
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UMP_DEBUG_PRINT(1, ("UMP: ump_arch_open() failed to open UMP device driver\n"));
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retval = UMP_ERROR;
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ump_ref_count--;
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}
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}
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/* Signal the lock so someone else can use it */
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_ump_osu_lock_signal( ump_lock_arch, _UMP_OSU_LOCKMODE_RW );
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return retval;
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}
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void ump_arch_close(void)
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{
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_ump_osu_lock_auto_init( &ump_lock_arch, _UMP_OSU_LOCKFLAG_DEFAULT, 0, 0 );
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/* Check that the lock was initialized */
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if(NULL == ump_lock_arch)
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{
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UMP_DEBUG_PRINT(1, ("UMP: ump_arch_close() failed to init lock\n"));
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return;
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}
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/* Attempt to obtain a lock */
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if( _UMP_OSU_ERR_OK != _ump_osu_lock_wait( ump_lock_arch, _UMP_OSU_LOCKMODE_RW ) )
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{
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UMP_DEBUG_PRINT(1, ("UMP: ump_arch_close() failed to acquire lock\n"));
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return;
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}
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UMP_DEBUG_ASSERT(0 < ump_ref_count, ("UMP: ump_arch_close() called while no references exist"));
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if (ump_ref_count > 0)
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{
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ump_ref_count--;
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if (0 == ump_ref_count)
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{
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_ump_osu_errcode_t retval = _ump_uku_close(&ump_uk_ctx);
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UMP_DEBUG_ASSERT(retval == _UMP_OSU_ERR_OK, ("UMP: Failed to close UMP interface"));
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UMP_IGNORE(retval);
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ump_uk_ctx = NULL;
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_ump_osu_lock_signal( ump_lock_arch, _UMP_OSU_LOCKMODE_RW );
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_ump_osu_lock_term( ump_lock_arch ); /* Not 100% thread safe, since another thread can already be waiting for this lock in ump_arch_open() */
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ump_lock_arch = NULL;
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return;
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}
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}
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/* Signal the lock so someone else can use it */
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_ump_osu_lock_signal( ump_lock_arch, _UMP_OSU_LOCKMODE_RW );
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}
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ump_secure_id ump_arch_allocate(unsigned long * size, ump_alloc_constraints constraints)
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{
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_ump_uk_allocate_s call_arg;
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if ( NULL == size )
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{
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return UMP_INVALID_SECURE_ID;
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}
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call_arg.ctx = ump_uk_ctx;
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call_arg.secure_id = UMP_INVALID_SECURE_ID;
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call_arg.size = *size;
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#ifdef UMP_DEBUG_SKIP_CODE
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/** Run-time ASSERTing that _ump_uk_api_version_s and ump_alloc_constraints are
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* interchangable */
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switch (constraints)
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{
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case UMP_REF_DRV_CONSTRAINT_NONE:
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UMP_DEBUG_ASSERT( UMP_REF_DRV_UK_CONSTRAINT_NONE == constraints, ("ump_uk_alloc_constraints out of sync with ump_alloc_constraints") );
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break;
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case UMP_REF_DRV_CONSTRAINT_PHYSICALLY_LINEAR:
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UMP_DEBUG_ASSERT( UMP_REF_DRV_UK_CONSTRAINT_PHYSICALLY_LINEAR == constraints, ("ump_uk_alloc_constraints out of sync with ump_alloc_constraints") );
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break;
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default:
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UMP_DEBUG_ASSERT( 1, ("ump_uk_alloc_constraints out of sync with ump_alloc_constraints: %d unrecognized", constraints) );
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break;
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}
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#endif
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call_arg.constraints = (ump_uk_alloc_constraints)constraints;
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if ( _UMP_OSU_ERR_OK != _ump_uku_allocate(&call_arg) )
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{
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return UMP_INVALID_SECURE_ID;
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}
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*size = call_arg.size;
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UMP_DEBUG_PRINT(4, ("UMP: Allocated ID %u, size %ul", call_arg.secure_id, call_arg.size));
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return call_arg.secure_id;
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}
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ump_secure_id ump_arch_ion_import(int ion_fd, unsigned long *size, ump_alloc_constraints constraints)
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{
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_ump_uk_ion_import_s call_arg;
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call_arg.ctx = ump_uk_ctx;
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call_arg.ion_fd = ion_fd;
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call_arg.secure_id = UMP_INVALID_SECURE_ID;
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call_arg.size = *size;
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call_arg.constraints = (ump_uk_alloc_constraints)constraints;
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UMP_DEBUG_PRINT(4, ("%s ion_fd=%d size=%lu constraints=%x", __func__, ion_fd, (unsigned long)size, constraints));
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if ( _UMP_OSU_ERR_OK != _ump_uku_ion_import(&call_arg) )
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{
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return UMP_INVALID_SECURE_ID;
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}
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*size = call_arg.size;
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UMP_DEBUG_PRINT(4, ("%s Allocated ID %u, size %ul", __func__, call_arg.secure_id, call_arg.size));
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return call_arg.secure_id;
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}
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unsigned long ump_arch_size_get(ump_secure_id secure_id)
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{
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_ump_uk_size_get_s dd_size_call_arg;
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dd_size_call_arg.ctx = ump_uk_ctx;
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dd_size_call_arg.secure_id = secure_id;
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dd_size_call_arg.size = 0;
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if (_UMP_OSU_ERR_OK == _ump_uku_size_get( &dd_size_call_arg ) )
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{
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return dd_size_call_arg.size;
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}
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return 0;
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}
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void ump_arch_reference_release(ump_secure_id secure_id)
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{
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_ump_uk_release_s dd_release_call_arg;
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_ump_osu_errcode_t retval;
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dd_release_call_arg.ctx = ump_uk_ctx;
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dd_release_call_arg.secure_id = secure_id;
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UMP_DEBUG_PRINT(4, ("UMP: Releasing ID %u", secure_id));
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retval = _ump_uku_release( &dd_release_call_arg );
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UMP_DEBUG_ASSERT(retval == _UMP_OSU_ERR_OK, ("UMP: Failed to release reference to UMP memory"));
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UMP_IGNORE(retval);
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}
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void* ump_arch_map(ump_secure_id secure_id, unsigned long size, ump_cache_enabled cache, unsigned long *cookie_out)
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{
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_ump_uk_map_mem_s dd_map_call_arg;
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UMP_DEBUG_ASSERT_POINTER( cookie_out );
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dd_map_call_arg.ctx = ump_uk_ctx;
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dd_map_call_arg.secure_id = secure_id;
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dd_map_call_arg.size = size;
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dd_map_call_arg.is_cached = (u32) (UMP_CACHE_ENABLE==cache);
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if ( -1 == _ump_uku_map_mem( &dd_map_call_arg ) )
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{
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UMP_DEBUG_PRINT(4, ("UMP: Mapping failed for ID %u", secure_id));
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return NULL;
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}
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UMP_DEBUG_PRINT(4, ("Mapped %u at 0x%08lx", secure_id, (unsigned long)dd_map_call_arg.mapping));
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*cookie_out = dd_map_call_arg.cookie;
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return dd_map_call_arg.mapping;
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}
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void ump_arch_unmap(void* mapping, unsigned long size, unsigned long cookie)
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{
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_ump_uk_unmap_mem_s dd_unmap_call_arg;
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dd_unmap_call_arg.ctx = ump_uk_ctx;
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dd_unmap_call_arg.mapping = mapping;
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dd_unmap_call_arg.size = size;
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dd_unmap_call_arg.cookie = cookie;
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UMP_DEBUG_PRINT(4, ("Unmapping 0x%08lx", (unsigned long)mapping));
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_ump_uku_unmap_mem( &dd_unmap_call_arg );
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}
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/** Memory synchronization - cache flushing of mapped memory */
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ump_cache_enabled ump_arch_msync(ump_secure_id secure_id, void* mapping, unsigned long cookie, void * address, unsigned long size, ump_cpu_msync_op op)
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{
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_ump_uk_msync_s dd_msync_call_arg;
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dd_msync_call_arg.ctx = ump_uk_ctx;
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dd_msync_call_arg.mapping = mapping;
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dd_msync_call_arg.address = address;
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dd_msync_call_arg.size = size;
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dd_msync_call_arg.op = (ump_uk_msync_op)op;
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dd_msync_call_arg.cookie = cookie;
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dd_msync_call_arg.secure_id = secure_id;
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dd_msync_call_arg.is_cached = 0;
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UMP_DEBUG_PRINT(4, ("Msync 0x%08lx", (unsigned long)mapping));
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_ump_uku_msynch( &dd_msync_call_arg );
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if ( 0==dd_msync_call_arg.is_cached )
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{
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UMP_DEBUG_PRINT(4, ("Trying to flush uncached UMP mem ID: %d", secure_id));
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}
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return (ump_cache_enabled)(dd_msync_call_arg.is_cached);
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}
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/** Cache operation control. Tell when cache maintenance operations start and end.
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This will allow the kernel to merge cache operations togheter, thus making them faster */
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int ump_arch_cache_operations_control(ump_cache_op_control op)
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{
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_ump_uk_cache_operations_control_s dd_cache_control_arg;
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dd_cache_control_arg.op = (ump_uk_cache_op_control)op;
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dd_cache_control_arg.ctx = ump_uk_ctx;
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UMP_DEBUG_PRINT(4, ("Cache control op:%d",(u32)op ));
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_ump_uku_cache_operations_control( &dd_cache_control_arg );
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return 1; /* Always success */
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}
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int ump_arch_switch_hw_usage( ump_secure_id secure_id, ump_hw_usage new_user )
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{
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_ump_uk_switch_hw_usage_s dd_sitch_user_arg;
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dd_sitch_user_arg.secure_id = secure_id;
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dd_sitch_user_arg.new_user = (ump_uk_user)new_user;
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dd_sitch_user_arg.ctx = ump_uk_ctx;
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UMP_DEBUG_PRINT(4, ("Switch user UMP:%d User:%d",secure_id, (u32)new_user ));
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_ump_uku_switch_hw_usage( &dd_sitch_user_arg );
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return 1; /* Always success */
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}
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int ump_arch_lock( ump_secure_id secure_id, ump_lock_usage lock_usage )
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{
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_ump_uk_lock_s dd_lock_arg;
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dd_lock_arg.ctx = ump_uk_ctx;
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dd_lock_arg.secure_id = secure_id;
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dd_lock_arg.lock_usage = (ump_uk_lock_usage) lock_usage;
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UMP_DEBUG_PRINT(4, ("Lock UMP:%d ",secure_id));
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_ump_uku_lock( &dd_lock_arg );
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return 1; /* Always success */
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}
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int ump_arch_unlock( ump_secure_id secure_id )
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{
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_ump_uk_unlock_s dd_unlock_arg;
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dd_unlock_arg.ctx = ump_uk_ctx;
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dd_unlock_arg.secure_id = secure_id;
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UMP_DEBUG_PRINT(4, ("Lock UMP:%d ",secure_id));
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_ump_uku_unlock( &dd_unlock_arg );
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return 1; /* Always success */
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}
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