1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.h b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.h
new file mode 100644
index 00000000000..a199fd66b5a
--- /dev/null
+++ b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/common/mali_kernel_mem_mmu.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2010-2011 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.
+ */
+
+#ifndef __MALI_KERNEL_MEM_MMU_H__
+#define __MALI_KERNEL_MEM_MMU_H__
+
+#include "mali_kernel_session_manager.h"
+
+/**
+ * Lookup a MMU core by ID.
+ * @param id ID of the MMU to find
+ * @return NULL if ID not found or valid, non-NULL if a core was found.
+ */
+void* mali_memory_core_mmu_lookup(u32 id);
+
+/**
+ * Activate a user session with its address space on the given MMU.
+ * If the session can't be activated due to that the MMU is busy and
+ * a callback pointer is given, the callback will be called once the MMU becomes idle.
+ * If the same callback pointer is registered multiple time it will only be called once.
+ * Nested activations are supported.
+ * Each call must be matched by a call to @see mali_memory_core_mmu_release_address_space_reference
+ *
+ * @param mmu The MMU to activate the address space on
+ * @param mali_session_data The user session object which address space to activate
+ * @param callback Pointer to the function to call when the MMU becomes idle
+ * @param callback_arg Argument given to the callback
+ * @return 0 if the address space was activated, -EBUSY if the MMU was busy, -EFAULT in all other cases.
+ */
+int mali_memory_core_mmu_activate_page_table(void* mmu_ptr, struct mali_session_data * mali_session_data, void(*callback)(void*), void * callback_argument);
+
+/**
+ * Release a reference to the current active address space.
+ * Once the last reference is released any callback(s) registered will be called before the function returns
+ *
+ * @note Caution must be shown calling this function with locks held due to that callback can be called
+ * @param mmu The mmu to release a reference to the active address space of
+ */
+void mali_memory_core_mmu_release_address_space_reference(void* mmu);
+
+/**
+ * Soft reset of MMU - needed after power up
+ *
+ * @param mmu_ptr The MMU pointer registered with the relevant core
+ */
+void mali_kernel_mmu_reset(void * mmu_ptr);
+
+void mali_kernel_mmu_force_bus_reset(void * mmu_ptr);
+
+/**
+ * Unregister a previously registered callback.
+ * @param mmu The MMU to unregister the callback on
+ * @param callback The function to unregister
+ */
+void mali_memory_core_mmu_unregister_callback(void* mmu, void(*callback)(void*));
+
+
+
+#endif /* __MALI_KERNEL_MEM_MMU_H__ */