plat/arm/common/fconf/fconf_ethosn_getter.c - filogic/atf - Gitiles

 /*
  * Copyright (c) 2021-2022, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <assert.h>
 #include <string.h>

 #include <common/debug.h>
 #include <common/fdt_wrappers.h>
 #include <libfdt.h>
 #include <plat/arm/common/fconf_ethosn_getter.h>

 struct ethosn_config_t ethosn_config = {0};

 struct ethosn_sub_allocator_t {
 	const char *name;
 	size_t name_len;
 	uint32_t stream_id;
 };

 static bool fdt_node_is_enabled(const void *fdt, int node)
 {
 	int len;
 	const char *node_status;

 	node_status = fdt_getprop(fdt, node, "status", &len);
 	if (node_status == NULL ||
 	    (len == 5 && /* Includes null character */
 	     strncmp(node_status, "okay", 4U) == 0)) {
 		return true;
 	}

 	return false;
 }

 static bool fdt_node_has_reserved_memory(const void *fdt, int dev_node)
 {
 	return fdt_get_property(fdt, dev_node, "memory-region", NULL) != NULL;
 }

 static int fdt_node_get_iommus_stream_id(const void *fdt, int node, uint32_t *stream_id)
 {
 	int err;
 	uint32_t iommus_array[2] = {0U};

 	err = fdt_read_uint32_array(fdt, node, "iommus", 2U, iommus_array);
 	if (err) {
 		return err;
 	}

 	*stream_id = iommus_array[1];
 	return 0;
 }

 static int fdt_node_populate_sub_allocators(const void *fdt,
 					    int alloc_node,
 					    struct ethosn_sub_allocator_t *sub_allocators,
 					    size_t num_allocs)
 {
 	int sub_node;
 	size_t i;
 	int err = -FDT_ERR_NOTFOUND;
 	uint32_t found_sub_allocators = 0U;

 	fdt_for_each_subnode(sub_node, fdt, alloc_node) {
 		const char *node_name;

 		if (!fdt_node_is_enabled(fdt, sub_node)) {
 			/* Ignore disabled node */
 			continue;
 		}

 		if (fdt_node_check_compatible(fdt, sub_node, "ethosn-memory") != 0) {
 			continue;
 		}

 		node_name = fdt_get_name(fdt, sub_node, NULL);
 		for (i = 0U; i < num_allocs; ++i) {
 			if (strncmp(node_name, sub_allocators[i].name,
 				    sub_allocators[i].name_len) != 0) {
 				continue;
 			}

 			err = fdt_node_get_iommus_stream_id(fdt, sub_node,
 							    &sub_allocators[i].stream_id);
 			if (err) {
 				ERROR("FCONF: Failed to get stream ID from sub-allocator %s\n",
 				      node_name);
 				return err;
 			}

 			++found_sub_allocators;
 			/* Nothing more to do for this node */
 			break;
 		}

 		/* Check that at least one of the sub-allocators matched */
 		if (i == num_allocs) {
 			ERROR("FCONF: Unknown sub-allocator %s\n", node_name);
 			return -FDT_ERR_BADSTRUCTURE;
 		}
 	}

 	if ((sub_node < 0) && (sub_node != -FDT_ERR_NOTFOUND)) {
 		ERROR("FCONF: Failed to parse sub-allocators\n");
 		return -FDT_ERR_BADSTRUCTURE;
 	}

 	if (err == -FDT_ERR_NOTFOUND) {
 		ERROR("FCONF: No matching sub-allocator found\n");
 		return err;
 	}

 	if (found_sub_allocators != num_allocs) {
 		ERROR("FCONF: Not all sub-allocators were found\n");
 		return -FDT_ERR_BADSTRUCTURE;
 	}

 	return 0;
 }

 static int fdt_node_populate_main_allocator(const void *fdt,
 					    int alloc_node,
 					    struct ethosn_main_allocator_t *allocator)
 {
 	int err;
 	struct ethosn_sub_allocator_t sub_allocators[] = {
 		{.name = "firmware", .name_len = 8U},
 		{.name = "working_data", .name_len = 12U}
 	};

 	err = fdt_node_populate_sub_allocators(fdt, alloc_node, sub_allocators,
 					       ARRAY_SIZE(sub_allocators));
 	if (err) {
 		return err;
 	}

 	allocator->firmware.stream_id = sub_allocators[0].stream_id;
 	allocator->working_data.stream_id = sub_allocators[1].stream_id;

 	return 0;
 }

 static int fdt_node_populate_asset_allocator(const void *fdt,
 					    int alloc_node,
 					    struct ethosn_asset_allocator_t *allocator)
 {
 	int err;
 	struct ethosn_sub_allocator_t sub_allocators[] = {
 		{.name = "command_stream", .name_len = 14U},
 		{.name = "weight_data", .name_len = 11U},
 		{.name = "buffer_data", .name_len = 11U},
 		{.name = "intermediate_data", .name_len = 17U}
 	};

 	err = fdt_node_populate_sub_allocators(fdt, alloc_node, sub_allocators,
 					       ARRAY_SIZE(sub_allocators));
 	if (err) {
 		return err;
 	}


 	allocator->command_stream.stream_id = sub_allocators[0].stream_id;
 	allocator->weight_data.stream_id = sub_allocators[1].stream_id;
 	allocator->buffer_data.stream_id = sub_allocators[2].stream_id;
 	allocator->intermediate_data.stream_id = sub_allocators[3].stream_id;
 	return 0;
 }

 static int fdt_node_populate_core(const void *fdt,
 				  int device_node,
 				  int core_node,
 				  bool has_reserved_memory,
 				  uint32_t core_index,
 				  struct ethosn_core_t *core)
 {
 	int err;
 	int sub_node;
 	uintptr_t core_addr;

 	err = fdt_get_reg_props_by_index(fdt, device_node, core_index,
 					 &core_addr, NULL);
 	if (err < 0) {
 		ERROR("FCONF: Failed to read reg property for NPU core %u\n",
 		      core_index);
 		return err;
 	}

 	err = -FDT_ERR_NOTFOUND;
 	fdt_for_each_subnode(sub_node, fdt, core_node) {

 		if (!fdt_node_is_enabled(fdt, sub_node)) {
 			continue;
 		}

 		if (fdt_node_check_compatible(fdt,
 					      sub_node,
 					      "ethosn-main_allocator") != 0) {
 			continue;
 		}

 		if (has_reserved_memory) {
 			ERROR("FCONF: Main allocator not supported when using reserved memory\n");
 			return -FDT_ERR_BADSTRUCTURE;
 		}

 		if (err != -FDT_ERR_NOTFOUND) {
 			ERROR("FCONF: NPU core 0x%lx has more than one main allocator\n",
 			      core_addr);
 			return -FDT_ERR_BADSTRUCTURE;
 		}

 		err = fdt_node_populate_main_allocator(fdt, sub_node, &core->main_allocator);
 		if (err) {
 			ERROR("FCONF: Failed to parse main allocator for NPU core 0x%lx\n",
 			      core_addr);
 			return err;
 		}
 	}

 	if ((sub_node < 0) && (sub_node != -FDT_ERR_NOTFOUND)) {
 		ERROR("FCONF: Failed to parse core sub nodes\n");
 		return -FDT_ERR_BADSTRUCTURE;
 	}

 	if (!has_reserved_memory && err) {
 		ERROR("FCONF: Main allocator not found for NPU core 0x%lx\n",
 		      core_addr);
 		return err;
 	}

 	core->addr = core_addr;

 	return 0;
 }

 int fconf_populate_ethosn_config(uintptr_t config)
 {
 	int ethosn_node;
 	uint32_t dev_count = 0U;
 	const void *hw_conf_dtb = (const void *)config;

 	INFO("Probing Arm(R) Ethos(TM)-N NPU\n");

 	fdt_for_each_compatible_node(hw_conf_dtb, ethosn_node, "ethosn") {
 		struct ethosn_device_t *dev = &ethosn_config.devices[dev_count];
 		uint32_t dev_asset_alloc_count = 0U;
 		uint32_t dev_core_count = 0U;
 		bool has_reserved_memory;
 		int sub_node;

 		if (!fdt_node_is_enabled(hw_conf_dtb, ethosn_node)) {
 			continue;
 		}

 		if (dev_count >= ETHOSN_DEV_NUM_MAX) {
 			ERROR("FCONF: Reached max number of NPUs\n");
 			return -FDT_ERR_BADSTRUCTURE;
 		}

 		has_reserved_memory = fdt_node_has_reserved_memory(hw_conf_dtb, ethosn_node);
 		fdt_for_each_subnode(sub_node, hw_conf_dtb, ethosn_node) {
 			int err;

 			if (!fdt_node_is_enabled(hw_conf_dtb, sub_node)) {
 				/* Ignore disabled sub node */
 				continue;
 			}

 			if (fdt_node_check_compatible(hw_conf_dtb,
 						      sub_node,
 						      "ethosn-core") == 0) {

 				if (dev_core_count >= ETHOSN_DEV_CORE_NUM_MAX) {
 					ERROR("FCONF: Reached max number of NPU cores for NPU %u\n",
 					      dev_count);
 					return -FDT_ERR_BADSTRUCTURE;
 				}

 				err = fdt_node_populate_core(hw_conf_dtb,
 							     ethosn_node,
 							     sub_node,
 							     has_reserved_memory,
 							     dev_core_count,
 							     &(dev->cores[dev_core_count]));
 				if (err) {
 					return err;
 				}
 				++dev_core_count;
 			} else if (fdt_node_check_compatible(hw_conf_dtb,
 							     sub_node,
 							     "ethosn-asset_allocator") == 0) {

 				if (dev_asset_alloc_count >=
 				    ETHOSN_DEV_ASSET_ALLOCATOR_NUM_MAX) {
 					ERROR("FCONF: Reached max number of asset allocators for NPU %u\n",
 					      dev_count);
 					return -FDT_ERR_BADSTRUCTURE;
 				}

 				if (has_reserved_memory) {
 					ERROR("FCONF: Asset allocator not supported when using reserved memory\n");
 					return -FDT_ERR_BADSTRUCTURE;
 				}

 				err = fdt_node_populate_asset_allocator(hw_conf_dtb,
 									sub_node,
 									&(dev->asset_allocators[dev_asset_alloc_count]));
 				if (err) {
 					ERROR("FCONF: Failed to parse asset allocator for NPU %u\n",
 					      dev_count);
 					return err;
 				}
 				++dev_asset_alloc_count;
 			}
 		}

 		if ((sub_node < 0) && (sub_node != -FDT_ERR_NOTFOUND)) {
 			ERROR("FCONF: Failed to parse sub nodes for NPU %u\n",
 			      dev_count);
 			return -FDT_ERR_BADSTRUCTURE;
 		}

 		if (dev_core_count == 0U) {
 			ERROR("FCONF: NPU %u must have at least one enabled core\n",
 			      dev_count);
 			return -FDT_ERR_BADSTRUCTURE;
 		}

 		if (!has_reserved_memory && dev_asset_alloc_count == 0U) {
 			ERROR("FCONF: NPU %u must have at least one asset allocator\n",
 			      dev_count);
 			return -FDT_ERR_BADSTRUCTURE;
 		}

 		dev->num_cores = dev_core_count;
 		dev->num_allocators = dev_asset_alloc_count;
 		dev->has_reserved_memory = has_reserved_memory;
 		++dev_count;
 	}

 	if (dev_count == 0U) {
 		ERROR("FCONF: Can't find 'ethosn' compatible node in dtb\n");
 		return -FDT_ERR_BADSTRUCTURE;
 	}

 	ethosn_config.num_devices = dev_count;

 	return 0;
 }

 FCONF_REGISTER_POPULATOR(HW_CONFIG, ethosn_config, fconf_populate_ethosn_config);
	/*
	* Copyright (c) 2021-2022, Arm Limited. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <assert.h>
	#include <string.h>

	#include <common/debug.h>
	#include <common/fdt_wrappers.h>
	#include <libfdt.h>
	#include <plat/arm/common/fconf_ethosn_getter.h>

	struct ethosn_config_t ethosn_config = {0};

	struct ethosn_sub_allocator_t {
	const char *name;
	size_t name_len;
	uint32_t stream_id;
	};

	static bool fdt_node_is_enabled(const void *fdt, int node)
	{
	int len;
	const char *node_status;

	node_status = fdt_getprop(fdt, node, "status", &len);
	if (node_status == NULL \|\|
	(len == 5 && /* Includes null character */
	strncmp(node_status, "okay", 4U) == 0)) {
	return true;
	}

	return false;
	}

	static bool fdt_node_has_reserved_memory(const void *fdt, int dev_node)
	{
	return fdt_get_property(fdt, dev_node, "memory-region", NULL) != NULL;
	}

	static int fdt_node_get_iommus_stream_id(const void fdt, int node, uint32_t stream_id)
	{
	int err;
	uint32_t iommus_array[2] = {0U};

	err = fdt_read_uint32_array(fdt, node, "iommus", 2U, iommus_array);
	if (err) {
	return err;
	}

	*stream_id = iommus_array[1];
	return 0;
	}

	static int fdt_node_populate_sub_allocators(const void *fdt,
	int alloc_node,
	struct ethosn_sub_allocator_t *sub_allocators,
	size_t num_allocs)
	{
	int sub_node;
	size_t i;
	int err = -FDT_ERR_NOTFOUND;
	uint32_t found_sub_allocators = 0U;

	fdt_for_each_subnode(sub_node, fdt, alloc_node) {
	const char *node_name;

	if (!fdt_node_is_enabled(fdt, sub_node)) {
	/* Ignore disabled node */
	continue;
	}

	if (fdt_node_check_compatible(fdt, sub_node, "ethosn-memory") != 0) {
	continue;
	}

	node_name = fdt_get_name(fdt, sub_node, NULL);
	for (i = 0U; i < num_allocs; ++i) {
	if (strncmp(node_name, sub_allocators[i].name,
	sub_allocators[i].name_len) != 0) {
	continue;
	}

	err = fdt_node_get_iommus_stream_id(fdt, sub_node,
	&sub_allocators[i].stream_id);
	if (err) {
	ERROR("FCONF: Failed to get stream ID from sub-allocator %s\n",
	node_name);
	return err;
	}

	++found_sub_allocators;
	/* Nothing more to do for this node */
	break;
	}

	/* Check that at least one of the sub-allocators matched */
	if (i == num_allocs) {
	ERROR("FCONF: Unknown sub-allocator %s\n", node_name);
	return -FDT_ERR_BADSTRUCTURE;
	}
	}

	if ((sub_node < 0) && (sub_node != -FDT_ERR_NOTFOUND)) {
	ERROR("FCONF: Failed to parse sub-allocators\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	if (err == -FDT_ERR_NOTFOUND) {
	ERROR("FCONF: No matching sub-allocator found\n");
	return err;
	}

	if (found_sub_allocators != num_allocs) {
	ERROR("FCONF: Not all sub-allocators were found\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	return 0;
	}

	static int fdt_node_populate_main_allocator(const void *fdt,
	int alloc_node,
	struct ethosn_main_allocator_t *allocator)
	{
	int err;
	struct ethosn_sub_allocator_t sub_allocators[] = {
	{.name = "firmware", .name_len = 8U},
	{.name = "working_data", .name_len = 12U}
	};

	err = fdt_node_populate_sub_allocators(fdt, alloc_node, sub_allocators,
	ARRAY_SIZE(sub_allocators));
	if (err) {
	return err;
	}

	allocator->firmware.stream_id = sub_allocators[0].stream_id;
	allocator->working_data.stream_id = sub_allocators[1].stream_id;

	return 0;
	}

	static int fdt_node_populate_asset_allocator(const void *fdt,
	int alloc_node,
	struct ethosn_asset_allocator_t *allocator)
	{
	int err;
	struct ethosn_sub_allocator_t sub_allocators[] = {
	{.name = "command_stream", .name_len = 14U},
	{.name = "weight_data", .name_len = 11U},
	{.name = "buffer_data", .name_len = 11U},
	{.name = "intermediate_data", .name_len = 17U}
	};

	err = fdt_node_populate_sub_allocators(fdt, alloc_node, sub_allocators,
	ARRAY_SIZE(sub_allocators));
	if (err) {
	return err;
	}


	allocator->command_stream.stream_id = sub_allocators[0].stream_id;
	allocator->weight_data.stream_id = sub_allocators[1].stream_id;
	allocator->buffer_data.stream_id = sub_allocators[2].stream_id;
	allocator->intermediate_data.stream_id = sub_allocators[3].stream_id;
	return 0;
	}

	static int fdt_node_populate_core(const void *fdt,
	int device_node,
	int core_node,
	bool has_reserved_memory,
	uint32_t core_index,
	struct ethosn_core_t *core)
	{
	int err;
	int sub_node;
	uintptr_t core_addr;

	err = fdt_get_reg_props_by_index(fdt, device_node, core_index,
	&core_addr, NULL);
	if (err < 0) {
	ERROR("FCONF: Failed to read reg property for NPU core %u\n",
	core_index);
	return err;
	}

	err = -FDT_ERR_NOTFOUND;
	fdt_for_each_subnode(sub_node, fdt, core_node) {

	if (!fdt_node_is_enabled(fdt, sub_node)) {
	continue;
	}

	if (fdt_node_check_compatible(fdt,
	sub_node,
	"ethosn-main_allocator") != 0) {
	continue;
	}

	if (has_reserved_memory) {
	ERROR("FCONF: Main allocator not supported when using reserved memory\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	if (err != -FDT_ERR_NOTFOUND) {
	ERROR("FCONF: NPU core 0x%lx has more than one main allocator\n",
	core_addr);
	return -FDT_ERR_BADSTRUCTURE;
	}

	err = fdt_node_populate_main_allocator(fdt, sub_node, &core->main_allocator);
	if (err) {
	ERROR("FCONF: Failed to parse main allocator for NPU core 0x%lx\n",
	core_addr);
	return err;
	}
	}

	if ((sub_node < 0) && (sub_node != -FDT_ERR_NOTFOUND)) {
	ERROR("FCONF: Failed to parse core sub nodes\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	if (!has_reserved_memory && err) {
	ERROR("FCONF: Main allocator not found for NPU core 0x%lx\n",
	core_addr);
	return err;
	}

	core->addr = core_addr;

	return 0;
	}

	int fconf_populate_ethosn_config(uintptr_t config)
	{
	int ethosn_node;
	uint32_t dev_count = 0U;
	const void hw_conf_dtb = (const void )config;

	INFO("Probing Arm(R) Ethos(TM)-N NPU\n");

	fdt_for_each_compatible_node(hw_conf_dtb, ethosn_node, "ethosn") {
	struct ethosn_device_t *dev = &ethosn_config.devices[dev_count];
	uint32_t dev_asset_alloc_count = 0U;
	uint32_t dev_core_count = 0U;
	bool has_reserved_memory;
	int sub_node;

	if (!fdt_node_is_enabled(hw_conf_dtb, ethosn_node)) {
	continue;
	}

	if (dev_count >= ETHOSN_DEV_NUM_MAX) {
	ERROR("FCONF: Reached max number of NPUs\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	has_reserved_memory = fdt_node_has_reserved_memory(hw_conf_dtb, ethosn_node);
	fdt_for_each_subnode(sub_node, hw_conf_dtb, ethosn_node) {
	int err;

	if (!fdt_node_is_enabled(hw_conf_dtb, sub_node)) {
	/* Ignore disabled sub node */
	continue;
	}

	if (fdt_node_check_compatible(hw_conf_dtb,
	sub_node,
	"ethosn-core") == 0) {

	if (dev_core_count >= ETHOSN_DEV_CORE_NUM_MAX) {
	ERROR("FCONF: Reached max number of NPU cores for NPU %u\n",
	dev_count);
	return -FDT_ERR_BADSTRUCTURE;
	}

	err = fdt_node_populate_core(hw_conf_dtb,
	ethosn_node,
	sub_node,
	has_reserved_memory,
	dev_core_count,
	&(dev->cores[dev_core_count]));
	if (err) {
	return err;
	}
	++dev_core_count;
	} else if (fdt_node_check_compatible(hw_conf_dtb,
	sub_node,
	"ethosn-asset_allocator") == 0) {

	if (dev_asset_alloc_count >=
	ETHOSN_DEV_ASSET_ALLOCATOR_NUM_MAX) {
	ERROR("FCONF: Reached max number of asset allocators for NPU %u\n",
	dev_count);
	return -FDT_ERR_BADSTRUCTURE;
	}

	if (has_reserved_memory) {
	ERROR("FCONF: Asset allocator not supported when using reserved memory\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	err = fdt_node_populate_asset_allocator(hw_conf_dtb,
	sub_node,
	&(dev->asset_allocators[dev_asset_alloc_count]));
	if (err) {
	ERROR("FCONF: Failed to parse asset allocator for NPU %u\n",
	dev_count);
	return err;
	}
	++dev_asset_alloc_count;
	}
	}

	if ((sub_node < 0) && (sub_node != -FDT_ERR_NOTFOUND)) {
	ERROR("FCONF: Failed to parse sub nodes for NPU %u\n",
	dev_count);
	return -FDT_ERR_BADSTRUCTURE;
	}

	if (dev_core_count == 0U) {
	ERROR("FCONF: NPU %u must have at least one enabled core\n",
	dev_count);
	return -FDT_ERR_BADSTRUCTURE;
	}

	if (!has_reserved_memory && dev_asset_alloc_count == 0U) {
	ERROR("FCONF: NPU %u must have at least one asset allocator\n",
	dev_count);
	return -FDT_ERR_BADSTRUCTURE;
	}

	dev->num_cores = dev_core_count;
	dev->num_allocators = dev_asset_alloc_count;
	dev->has_reserved_memory = has_reserved_memory;
	++dev_count;
	}

	if (dev_count == 0U) {
	ERROR("FCONF: Can't find 'ethosn' compatible node in dtb\n");
	return -FDT_ERR_BADSTRUCTURE;
	}

	ethosn_config.num_devices = dev_count;

	return 0;
	}

	FCONF_REGISTER_POPULATOR(HW_CONFIG, ethosn_config, fconf_populate_ethosn_config);