initial commit, taken and modified from linaro/insignal

1 files changed, 260 insertions, 0 deletions

diff --git a/exynos4/hal/libump/arch_011_udd/ump_arch.c b/exynos4/hal/libump/arch_011_udd/ump_arch.c
new file mode 100644
index 0000000..79c3c18
--- /dev/null
+++ b/exynos4/hal/libump/arch_011_udd/ump_arch.c
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2010-2011 ARM Limited. All rights reserved.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file ump_arch.c
+ *
+ * UMP arch layer for UMP-UDD
+ */
+
+#include <ump/ump.h>
+#include "ump_arch.h"
+#include <ump/ump_debug.h>
+
+#include <ump/ump_uk_types.h>
+#include "../os/ump_uku.h"
+
+/** Pointer to an OS-Specific context that we should pass in _uku_ calls */
+void *ump_uk_ctx = NULL;
+
+/** Reference counting of ump_arch_open() and ump_arch_close(). */
+volatile static int ump_ref_count = 0;
+
+/** Lock for critical section in open/close */
+_ump_osu_lock_t * ump_lock = NULL;
+
+ump_result ump_arch_open(void)
+{
+	ump_result retval = UMP_OK;
+
+	_ump_osu_lock_auto_init( &ump_lock, 0, 0, 0 );
+
+	/* Check that the lock was initialized */
+	if (NULL == ump_lock)
+	{
+		UMP_DEBUG_PRINT(1, ("UMP: ump_arch_open() failed to init lock\n"));
+		return UMP_ERROR;
+	}
+
+	/* Attempt to obtain a lock */
+	if( _UMP_OSU_ERR_OK !=  _ump_osu_lock_wait( ump_lock, _UMP_OSU_LOCKMODE_RW ) )
+	{
+		UMP_DEBUG_PRINT(1, ("UMP: ump_arch_open() failed to acquire lock\n"));
+		return UMP_ERROR;
+	}
+
+	/* ASSERT NEEDED */
+	UMP_DEBUG_ASSERT(0 <= ump_ref_count, ("UMP: Reference count invalid at _ump_base_arch_open()"));
+	ump_ref_count++;
+
+	if (1 == ump_ref_count)
+	{
+		/* We are the first, open the UMP device driver */
+
+		if (_UMP_OSU_ERR_OK != _ump_uku_open( &ump_uk_ctx ))
+		{
+			UMP_DEBUG_PRINT(1, ("UMP: ump_arch_open() failed to open UMP device driver\n"));
+			retval = UMP_ERROR;
+			ump_ref_count--;
+		}
+	}
+
+	/* Signal the lock so someone else can use it */
+	 _ump_osu_lock_signal( ump_lock, _UMP_OSU_LOCKMODE_RW );
+
+	return retval;
+}
+
+
+
+void ump_arch_close(void)
+{
+	_ump_osu_lock_auto_init( &ump_lock, 0, 0, 0 );
+
+	/* Check that the lock was initialized */
+	if(NULL == ump_lock)
+	{
+		UMP_DEBUG_PRINT(1, ("UMP: ump_arch_close() failed to init lock\n"));
+		return;
+	}
+
+	/* Attempt to obtain a lock */
+	if( _UMP_OSU_ERR_OK !=  _ump_osu_lock_wait( ump_lock, _UMP_OSU_LOCKMODE_RW ) )
+	{
+		UMP_DEBUG_PRINT(1, ("UMP: ump_arch_close() failed to acquire lock\n"));
+		return;
+	}
+
+	UMP_DEBUG_ASSERT(0 < ump_ref_count, ("UMP: ump_arch_close() called while no references exist"));
+	if (ump_ref_count > 0)
+	{
+		ump_ref_count--;
+		if (0 == ump_ref_count)
+		{
+			_ump_osu_errcode_t retval = _ump_uku_close(&ump_uk_ctx);
+			UMP_DEBUG_ASSERT(retval == _UMP_OSU_ERR_OK, ("UMP: Failed to close UMP interface"));
+			UMP_IGNORE(retval);
+			ump_uk_ctx = NULL;
+			_ump_osu_lock_signal( ump_lock, _UMP_OSU_LOCKMODE_RW );
+			_ump_osu_lock_term( ump_lock ); /* Not 100% thread safe, since another thread can already be waiting for this lock in ump_arch_open() */
+			ump_lock = NULL;
+			return;
+		}
+	}
+
+	/* Signal the lock so someone else can use it */
+	 _ump_osu_lock_signal( ump_lock, _UMP_OSU_LOCKMODE_RW );
+}
+
+
+
+ump_secure_id ump_arch_allocate(unsigned long * size, ump_alloc_constraints constraints)
+{
+	_ump_uk_allocate_s call_arg;
+
+	if ( NULL == size )
+	{
+		return UMP_INVALID_SECURE_ID;
+	}
+
+	call_arg.ctx = ump_uk_ctx;
+	call_arg.secure_id = UMP_INVALID_SECURE_ID;
+	call_arg.size = *size;
+#ifdef UMP_DEBUG_SKIP_CODE
+	/** Run-time ASSERTing that _ump_uk_api_version_s and ump_alloc_constraints are
+	 * interchangable */
+	switch (constraints)
+	{
+	case UMP_REF_DRV_CONSTRAINT_NONE:
+		UMP_DEBUG_ASSERT( UMP_REF_DRV_UK_CONSTRAINT_NONE == constraints, ("ump_uk_alloc_constraints out of sync with ump_alloc_constraints") );
+		break;
+	case UMP_REF_DRV_CONSTRAINT_PHYSICALLY_LINEAR:
+		UMP_DEBUG_ASSERT( UMP_REF_DRV_UK_CONSTRAINT_PHYSICALLY_LINEAR == constraints, ("ump_uk_alloc_constraints out of sync with ump_alloc_constraints") );
+		break;
+	default:
+		UMP_DEBUG_ASSERT( 1, ("ump_uk_alloc_constraints out of sync with ump_alloc_constraints: %d unrecognized", constraints) );
+		break;
+	}
+#endif
+	call_arg.constraints = (ump_uk_alloc_constraints)constraints;
+
+	if ( _UMP_OSU_ERR_OK != _ump_uku_allocate(&call_arg) )
+	{
+		return UMP_INVALID_SECURE_ID;
+	}
+
+	*size = call_arg.size;
+
+	UMP_DEBUG_PRINT(4, ("UMP: Allocated ID %u, size %ul", call_arg.secure_id, call_arg.size));
+
+	return call_arg.secure_id;
+}
+
+
+
+unsigned long ump_arch_size_get(ump_secure_id secure_id)
+{
+	_ump_uk_size_get_s dd_size_call_arg;
+
+	dd_size_call_arg.ctx = ump_uk_ctx;
+	dd_size_call_arg.secure_id = secure_id;
+	dd_size_call_arg.size = 0;
+
+	if (_UMP_OSU_ERR_OK == _ump_uku_size_get( &dd_size_call_arg ) )
+	{
+		return dd_size_call_arg.size;
+	}
+
+	return 0;
+}
+
+
+void ump_arch_reference_release(ump_secure_id secure_id)
+{
+	_ump_uk_release_s dd_release_call_arg;
+	_ump_osu_errcode_t retval;
+
+	dd_release_call_arg.ctx = ump_uk_ctx;
+	dd_release_call_arg.secure_id = secure_id;
+
+	UMP_DEBUG_PRINT(4, ("UMP: Releasing ID %u", secure_id));
+
+	retval = _ump_uku_release( &dd_release_call_arg );
+	UMP_DEBUG_ASSERT(retval == _UMP_OSU_ERR_OK, ("UMP: Failed to release reference to UMP memory"));
+	UMP_IGNORE(retval);
+}
+
+
+void* ump_arch_map(ump_secure_id secure_id, unsigned long size, ump_cache_enabled cache, unsigned long *cookie_out)
+{
+	_ump_uk_map_mem_s dd_map_call_arg;
+
+	UMP_DEBUG_ASSERT_POINTER( cookie_out );
+
+	dd_map_call_arg.ctx = ump_uk_ctx;
+	dd_map_call_arg.secure_id = secure_id;
+	dd_map_call_arg.size = size;
+	dd_map_call_arg.is_cached = (u32) (UMP_CACHE_ENABLE==cache);
+
+	if ( -1 == _ump_uku_map_mem( &dd_map_call_arg ) )
+	{
+		UMP_DEBUG_PRINT(4, ("UMP: Mapping failed for ID %u", secure_id));
+		return NULL;
+	}
+
+	UMP_DEBUG_PRINT(4, ("Mapped %u at 0x%08lx", secure_id, (unsigned long)dd_map_call_arg.mapping));
+
+	*cookie_out = dd_map_call_arg.cookie;
+	return dd_map_call_arg.mapping;
+}
+
+
+
+void ump_arch_unmap(void* mapping, unsigned long size, unsigned long cookie)
+{
+	_ump_uk_unmap_mem_s dd_unmap_call_arg;
+
+	dd_unmap_call_arg.ctx = ump_uk_ctx;
+	dd_unmap_call_arg.mapping = mapping;
+	dd_unmap_call_arg.size = size;
+	dd_unmap_call_arg.cookie = cookie;
+
+	UMP_DEBUG_PRINT(4, ("Unmapping 0x%08lx", (unsigned long)mapping));
+	_ump_uku_unmap_mem( &dd_unmap_call_arg );
+}
+
+/** Memory synchronization - cache flushing of mapped memory */
+int ump_arch_msync(ump_secure_id secure_id, void* mapping, unsigned long cookie, void * address, unsigned long size,  ump_cpu_msync_op op)
+{
+	_ump_uk_msync_s dd_msync_call_arg;
+
+	dd_msync_call_arg.ctx = ump_uk_ctx;
+	dd_msync_call_arg.mapping = mapping;
+	dd_msync_call_arg.address = address;
+	dd_msync_call_arg.size = size;
+	dd_msync_call_arg.op = (ump_uk_msync_op)op;
+	dd_msync_call_arg.cookie = cookie;
+	dd_msync_call_arg.secure_id = secure_id;
+	dd_msync_call_arg.is_cached = 0;
+
+	UMP_DEBUG_PRINT(4, ("Msync 0x%08lx", (unsigned long)mapping));
+	_ump_uku_msynch( &dd_msync_call_arg );
+	if ( 0==dd_msync_call_arg.is_cached )
+	{
+		UMP_DEBUG_PRINT(4, ("Trying to flush uncached UMP mem ID: %d", secure_id));
+	}
+	return dd_msync_call_arg.is_cached;
+}