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io_arm_class_diagram.puml 1.63 KB
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doc: Complete the storage abstraction layer doc    
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@startuml

package arm_io_storage {

	class plat_io_policy {
		dev_handle : uintptr_t*
		image_spec : uintptr_t
		{abstract} check() : fctptr
	}

	class FIP_IMAGE_ID {
		memmap_dev_handle
		fip_block_spec
		open_memmap()
	}

	class BL2_IMAGE_ID{
		fip_dev_handle
		bl2_uuid_spec
		open_fip()
	}

	class xxx_IMAGE_ID{
		fip_dev_handle
		xxx_uuid_spec
		open_fip()
	}

	class arm_io_storage {
		fip_dev_con : io_dev_connector_t*
		fip_dev_handle : uintptr_t
		memmap_dev_con : io_dev_connector_t*
		memmap_dev_handle : uintptr_t

		fip_block_spec : io_block_spec_t

		policies : plat_io_policy[1..*]

		-open_fip()
		-open_memmap()

		+arm_io_setup()
		+plat_get_image_source()
	}

	FIP_IMAGE_ID -up-|> plat_io_policy
	BL2_IMAGE_ID -up-|> plat_io_policy
	xxx_IMAGE_ID -up-|> plat_io_policy

	arm_io_storage *-"1..*" plat_io_policy
}

package IO {
	class  io_storage {
		io_dev_open()
		io_dev_init()
		io_dev_close()

		.. synchronous operations ..
		io_open()
		io_seek()
		io_size()
		io_read()
		io_write()
		io_close()

		io_register_device()
	}

	class io_fip {
		register_io_dev_fip()
		.. io_dev_funcs_t interface ..
		fip_dev_funcs : io_dev_funcs_t
	}

	class io_memmap {
		register_io_dev_memmap()
		.. io_dev_funcs_t interface ..
		memmap_dev_funcs : io_dev_funcs_t
	}

	interface io_driver {
		io_entity_t
		io_dev_info_t

		.. io_dev_connector_t interface ..
		dev_open()

		.. io_dev_funcs_t interface ..
			type()
			open()
			seek()
			size()
			read()
			write()
			close()
			dev_init()
			dev_close()

		io_register_device()
	}
}
arm_io_storage .. io_driver
arm_io_storage .. io_fip
arm_io_storage .. io_memmap
arm_io_storage .. io_storage


@enduml