zdsp: add ARC DSPLIB backend for zdsp (b475e1fc) · Commits · Wenxi XU / zephyr

doc/services/dsp/index.rst

+6 −3

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		@@ -14,7 +14,7 @@ optimized. The status of the various architectures can be found below:
		============ =============
		Architecture Status
		============ =============
		ARC Unoptimized
		ARC Optimized
		ARM Optimized
		ARM64 Optimized
		MIPS Unoptimized
		@@ -46,11 +46,13 @@ Optimizing for your architecture

		If your architecture is showing as ``Unoptimized``, it's possible to add a new
		zDSP backend to better support it. To do that, a new Kconfig option should be
		added to `subsys/dsp/Kconfig`_ along with the required dependencies and the
		added to :file:`subsys/dsp/Kconfig` along with the required dependencies and the
		``default`` set for ``DSP_BACKEND`` Kconfig choice.

		Next, the implementation should be added at ``subsys/dsp/<backend>/`` and
		linked in at `subsys/dsp/CMakeLists.txt`_.
		linked in at :file:`subsys/dsp/CMakeLists.txt`. To add architecture-specific attributes,
		its corresponding Kconfig option should be added to :file:`subsys/dsp/Kconfig` and use
		them to update ``DSP_DATA`` and ``DSP_STATIC_DATA`` in :file:`include/zephyr/dsp/dsp.h`.

		API Reference
		*************
		@@ -59,3 +61,4 @@ API Reference

		.. _subsys/dsp/Kconfig: https://github.com/zephyrproject-rtos/zephyr/blob/main/subsys/dsp/Kconfig
		.. _subsys/dsp/CMakeLists.txt: https://github.com/zephyrproject-rtos/zephyr/blob/main/subsys/dsp/CMakeLists.txt
		.. _include/zephyr/dsp/dsp.h: https://github.com/zephyrproject-rtos/zephyr/blob/main/include/zephyr/dsp/dsp.h

+8 −0

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		@@ -17,9 +17,17 @@
		#define DSP_FUNC_SCOPE
		#endif

		#ifdef CONFIG_DSP_BACKEND_HAS_AGU
		#define DSP_DATA __agu
		#else
		#define DSP_DATA
		#endif

		#ifdef CONFIG_DSP_BACKEND_HAS_XDATA_SECTION
		#define DSP_STATIC_DATA DSP_DATA __attribute__((section(".Xdata")))
		#else
		#define DSP_STATIC_DATA DSP_DATA
		#endif

		/**
		* @brief DSP Interface

+2 −0

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		@@ -28,6 +28,8 @@ else()
		-Xshift_assist -Xfpus_div -Xfpu_mac -Xfpuda -Xfpus_mpy_slow
		-Xfpus_div_slow -Xbitstream -Xtimer0 -Xtimer1)

		zephyr_ld_option_ifdef(CONFIG_SOC_NSIM_EM11D -Hlib=em9d_nrg_fpusp -Hdsplib)

		if(CONFIG_SOC_NSIM_EM11D)
		set_property(GLOBAL PROPERTY z_arc_dsp_options -Xxy -Xagu_large -Hfxapi -Xdsp2
		-Xdsp_accshift=full -Xdsp_divsqrt=radix2 -Xdsp_complex -Xdsp_itu

+1 −0

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		@@ -2,3 +2,4 @@
		# SPDX-License-Identifier: Apache-2.0

		add_subdirectory_ifdef(CONFIG_DSP_BACKEND_CMSIS cmsis)
		add_subdirectory_ifdef(CONFIG_DSP_BACKEND_ARCMWDT arcmwdt)

+18 −0

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		@@ -13,9 +13,16 @@ if DSP
		config DSP_BACKEND_HAS_STATIC
		bool

		config DSP_BACKEND_HAS_AGU
		bool

		config DSP_BACKEND_HAS_XDATA_SECTION
		bool

		choice DSP_BACKEND
		prompt "DSP library backend selection"
		default DSP_BACKEND_CMSIS if CMSIS_DSP
		default DSP_BACKEND_ARCMWDT if ARC && "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "arcmwdt"
		default DSP_BACKEND_CUSTOM

		config DSP_BACKEND_CMSIS
		@@ -32,6 +39,17 @@ config DSP_BACKEND_CUSTOM
		Rely on the application to provide a custom DSP backend. The implementation should be
		added to the 'zdsp' build target by the application or one of its modules.

		config DSP_BACKEND_ARCMWDT
		bool "Use the mwdt library as the math backend"
		depends on ARCMWDT_LIBC
		depends on CMSIS_DSP
		select DSP_BACKEND_HAS_STATIC
		select DSP_BACKEND_HAS_AGU
		select DSP_BACKEND_HAS_XDATA_SECTION
		help
		Implement the various zephyr DSP functions using the MWDT-DSP library. This feature
		requires the MetaWare toolchain and CMSIS module to be selected.

		endchoice

		endif # DSP