arch/mips/mach-octeon/cvmx-coremask.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2018-2020 Marvell International Ltd.
  */

 #include <env.h>
 #include <errno.h>

 #include <linux/compat.h>
 #include <linux/ctype.h>

 #include <mach/cvmx-regs.h>
 #include <mach/cvmx-coremask.h>
 #include <mach/cvmx-fuse.h>
 #include <mach/octeon-model.h>
 #include <mach/octeon-feature.h>
 #include <mach/cvmx-ciu-defs.h>

 struct cvmx_coremask *get_coremask_override(struct cvmx_coremask *pcm)
 {
 	struct cvmx_coremask pcm_override = CVMX_COREMASK_MAX;
 	char *cptr;

 	/* The old code sets the number of cores to be to 16 in this case. */
 	cvmx_coremask_set_cores(pcm, 0, 16);

 	if (OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3())
 		cvmx_coremask_copy(pcm, &pcm_override);

 	cptr = env_get("coremask_override");
 	if (cptr) {
 		if (cvmx_coremask_str2bmp(pcm, cptr) < 0)
 			return NULL;
 	}

 	return pcm;
 }

 /* Validate the coremask that is passed to a boot* function. */
 int validate_coremask(struct cvmx_coremask *pcm)
 {
 	struct cvmx_coremask coremask_override;
 	struct cvmx_coremask fuse_coremask;

 	if (!get_coremask_override(&coremask_override))
 		return -1;

 	octeon_get_available_coremask(&fuse_coremask);

 	if (!cvmx_coremask_is_subset(&fuse_coremask, pcm)) {
 		puts("ERROR: Can't boot cores that don't exist!\n");
 		puts("Available coremask:\n");
 		cvmx_coremask_print(&fuse_coremask);
 		return -1;
 	}

 	if (!cvmx_coremask_is_subset(&coremask_override, pcm)) {
 		struct cvmx_coremask print_cm;

 		puts("Notice: coremask changed from:\n");
 		cvmx_coremask_print(pcm);
 		puts("based on coremask_override of:\n");
 		cvmx_coremask_print(&coremask_override);
 		cvmx_coremask_and(&print_cm, pcm, &coremask_override);
 		puts("to:\n");
 		cvmx_coremask_print(&print_cm);
 	}

 	return 0;
 }

 /**
  * In CIU_FUSE for the 78XX, odd and even cores are separated out.
  * For example, a CIU_FUSE value of 0xfffffefffffe indicates that bits 0 and 1
  * are set.
  * This function converts the bit number in the CIU_FUSE register to a
  * physical core number.
  */
 static int convert_ciu_fuse_to_physical_core(int core, int max_cores)
 {
 	if (!octeon_has_feature(OCTEON_FEATURE_CIU3))
 		return core;
 	else if (!OCTEON_IS_MODEL(OCTEON_CN78XX))
 		return core;
 	else if (core < (max_cores / 2))
 		return core * 2;
 	else
 		return ((core - (max_cores / 2)) * 2) + 1;
 }

 /**
  * Get the total number of fuses blown as well as the number blown per tad.
  *
  * @param	coremask	fuse coremask
  * @param[out]	tad_blown_count	number of cores blown for each tad
  * @param	num_tads	number of tads
  * @param	max_cores	maximum number of cores
  *
  * Return:	void
  */
 void fill_tad_corecount(u64 coremask, int tad_blown_count[], int num_tads,
 			int max_cores)
 {
 	int core, physical_core;

 	for (core = 0; core < max_cores; core++) {
 		if (!(coremask & (1ULL << core))) {
 			int tad;

 			physical_core =
 				convert_ciu_fuse_to_physical_core(core,
 								  max_cores);
 			tad = physical_core % num_tads;
 			tad_blown_count[tad]++;
 		}
 	}
 }

 u64 get_core_pattern(int num_tads, int max_cores)
 {
 	u64 pattern = 1ULL;
 	int cnt;

 	for (cnt = 1; cnt < (max_cores / num_tads); cnt++)
 		pattern |= pattern << num_tads;

 	return pattern;
 }

 /**
  * For CN78XX and CN68XX this function returns the logical coremask from the
  * CIU_FUSE register value. For other models there is no difference.
  *
  * @param ciu_fuse_value	fuse value from CIU_FUSE register
  * Return: logical coremask of CIU_FUSE value.
  */
 u64 get_logical_coremask(u64 ciu_fuse_value)
 {
 	int tad_blown_count[MAX_CORE_TADS] = {0};
 	int tad;
 	u64 logical_coremask = 0;
 	u64 tad_mask, pattern;
 	int num_tads, max_cores;

 	if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
 		num_tads = 8;
 		max_cores = 48;
 	} else if (OCTEON_IS_MODEL(OCTEON_CN73XX) ||
 		   OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
 		num_tads = 4;
 		max_cores = 16;
 	} else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
 		num_tads = 4;
 		max_cores = 32;
 	} else {
 		/* Most Octeon devices don't need any mapping. */
 		return ciu_fuse_value;
 	}

 	pattern = get_core_pattern(num_tads, max_cores);
 	fill_tad_corecount(ciu_fuse_value, tad_blown_count,
 			   num_tads, max_cores);

 	for (tad = 0; tad < num_tads; tad++) {
 		tad_mask = pattern << tad;
 		logical_coremask |= tad_mask >> (tad_blown_count[tad] * num_tads);
 	}
 	return logical_coremask;
 }

 /**
  * Returns the available coremask either from env or fuses.
  * If the fuses are blown and locked, they are the definitive coremask.
  *
  * @param pcm	pointer to coremask to fill in
  * Return: pointer to coremask
  */
 struct cvmx_coremask *octeon_get_available_coremask(struct cvmx_coremask *pcm)
 {
 	u8 node_mask = 0x01;	/* ToDo: Currently only one node is supported */
 	u64 ciu_fuse;
 	u64 cores;

 	cvmx_coremask_clear_all(pcm);

 	if (octeon_has_feature(OCTEON_FEATURE_CIU3)) {
 		int node;

 		cvmx_coremask_for_each_node(node, node_mask) {
 			ciu_fuse = (csr_rd(CVMX_CIU_FUSE) &
 				    0x0000FFFFFFFFFFFFULL);

 			ciu_fuse = get_logical_coremask(ciu_fuse);
 			cvmx_coremask_set64_node(pcm, node, ciu_fuse);
 		}

 		return pcm;
 	}

 	ciu_fuse = (csr_rd(CVMX_CIU_FUSE) & 0x0000FFFFFFFFFFFFULL);
 	ciu_fuse = get_logical_coremask(ciu_fuse);

 	if (OCTEON_IS_MODEL(OCTEON_CN68XX))
 		cvmx_coremask_set64(pcm, ciu_fuse);

 	/* Get number of cores from fuse register, convert to coremask */
 	cores = __builtin_popcountll(ciu_fuse);

 	cvmx_coremask_set_cores(pcm, 0, cores);

 	return pcm;
 }

 int cvmx_coremask_str2bmp(struct cvmx_coremask *pcm, char *hexstr)
 {
 	int i, j;
 	int l;		/* length of the hexstr in characters */
 	int lb;		/* number of bits taken by hexstr */
 	int hldr_offset;/* holder's offset within the coremask */
 	int hldr_xsz;	/* holder's size in the number of hex digits */
 	u64 h;
 	char c;

 #define MINUS_ONE (hexstr[0] == '-' && hexstr[1] == '1' && hexstr[2] == 0)
 	if (MINUS_ONE) {
 		cvmx_coremask_set_all(pcm);
 		return 0;
 	}

 	/* Skip '0x' from hexstr */
 	if (hexstr[0] == '0' && (hexstr[1] == 'x' || hexstr[1] == 'X'))
 		hexstr += 2;

 	if (!strlen(hexstr)) {
 		printf("%s: Error: hex string is empty\n", __func__);
 		return -2;
 	}

 	/* Trim leading zeros */
 	while (*hexstr == '0')
 		hexstr++;

 	cvmx_coremask_clear_all(pcm);
 	l = strlen(hexstr);

 	/* If length is 0 then the hex string must be all zeros */
 	if (l == 0)
 		return 0;

 	for (i = 0; i < l; i++) {
 		if (isxdigit((int)hexstr[i]) == 0) {
 			printf("%s: Non-hex digit within hexstr\n", __func__);
 			return -2;
 		}
 	}

 	lb = (l - 1) * 4;
 	if (hexstr[0] > '7')
 		lb += 4;
 	else if (hexstr[0] > '3')
 		lb += 3;
 	else if (hexstr[0] > '1')
 		lb += 2;
 	else
 		lb += 1;
 	if (lb > CVMX_MIPS_MAX_CORES) {
 		printf("%s: hexstr (%s) is too long\n", __func__, hexstr);
 		return -1;
 	}

 	hldr_offset = 0;
 	hldr_xsz = 2 * sizeof(u64);
 	for (i = l; i > 0; i -= hldr_xsz) {
 		c = hexstr[i];
 		hexstr[i] = 0;
 		j = i - hldr_xsz;
 		if (j < 0)
 			j = 0;
 		h = simple_strtoull(&hexstr[j], NULL, 16);
 		if (errno == EINVAL) {
 			printf("%s: strtou returns w/ EINVAL\n", __func__);
 			return -2;
 		}
 		pcm->coremask_bitmap[hldr_offset] = h;
 		hexstr[i] = c;
 		hldr_offset++;
 	}

 	return 0;
 }

 void cvmx_coremask_print(const struct cvmx_coremask *pcm)
 {
 	int i, j;
 	int start;
 	int found = 0;

 	/*
 	 * Print one node per line. Since the bitmap is stored LSB to MSB
 	 * we reverse the order when printing.
 	 */
 	if (!octeon_has_feature(OCTEON_FEATURE_MULTINODE)) {
 		start = 0;
 		for (j = CVMX_COREMASK_MAX_CORES_PER_NODE -
 			     CVMX_COREMASK_HLDRSZ;
 		     j >= 0; j -= CVMX_COREMASK_HLDRSZ) {
 			if (pcm->coremask_bitmap[j / CVMX_COREMASK_HLDRSZ] != 0)
 				start = 1;
 			if (start) {
 				printf(" 0x%llx",
 				       (u64)pcm->coremask_bitmap[j /
 						CVMX_COREMASK_HLDRSZ]);
 			}
 		}

 		if (start)
 			found = 1;

 		/*
 		 * If the coremask is empty print <EMPTY> so it is not
 		 * confusing
 		 */
 		if (!found)
 			printf("<EMPTY>");
 		printf("\n");

 		return;
 	}

 	for (i = 0; i < CVMX_MAX_USED_CORES_BMP;
 	     i += CVMX_COREMASK_MAX_CORES_PER_NODE) {
 		printf("%s  node %d:", i > 0 ? "\n" : "",
 		       cvmx_coremask_core_to_node(i));
 		start = 0;

 		for (j = i + CVMX_COREMASK_MAX_CORES_PER_NODE -
 			     CVMX_COREMASK_HLDRSZ;
 		     j >= i;
 		     j -= CVMX_COREMASK_HLDRSZ) {
 			/* Don't start printing until we get a non-zero word. */
 			if (pcm->coremask_bitmap[j / CVMX_COREMASK_HLDRSZ] != 0)
 				start = 1;

 			if (start) {
 				printf(" 0x%llx", (u64)pcm->coremask_bitmap[j /
 							CVMX_COREMASK_HLDRSZ]);
 			}
 		}

 		if (start)
 			found = 1;
 	}

 	i /= CVMX_COREMASK_HLDRSZ;
 	for (; i < CVMX_COREMASK_BMPSZ; i++) {
 		if (pcm->coremask_bitmap[i]) {
 			printf("  EXTRA GARBAGE[%i]: %016llx\n", i,
 			       (u64)pcm->coremask_bitmap[i]);
 		}
 	}

 	/* If the coremask is empty print <EMPTY> so it is not confusing */
 	if (!found)
 		printf("<EMPTY>");

 	printf("\n");
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (C) 2018-2020 Marvell International Ltd.
	*/

	#include <env.h>
	#include <errno.h>

	#include <linux/compat.h>
	#include <linux/ctype.h>

	#include <mach/cvmx-regs.h>
	#include <mach/cvmx-coremask.h>
	#include <mach/cvmx-fuse.h>
	#include <mach/octeon-model.h>
	#include <mach/octeon-feature.h>
	#include <mach/cvmx-ciu-defs.h>

	struct cvmx_coremask get_coremask_override(struct cvmx_coremask pcm)
	{
	struct cvmx_coremask pcm_override = CVMX_COREMASK_MAX;
	char *cptr;

	/* The old code sets the number of cores to be to 16 in this case. */
	cvmx_coremask_set_cores(pcm, 0, 16);

	if (OCTEON_IS_OCTEON2() \|\| OCTEON_IS_OCTEON3())
	cvmx_coremask_copy(pcm, &pcm_override);

	cptr = env_get("coremask_override");
	if (cptr) {
	if (cvmx_coremask_str2bmp(pcm, cptr) < 0)
	return NULL;
	}

	return pcm;
	}

	/* Validate the coremask that is passed to a boot* function. */
	int validate_coremask(struct cvmx_coremask *pcm)
	{
	struct cvmx_coremask coremask_override;
	struct cvmx_coremask fuse_coremask;

	if (!get_coremask_override(&coremask_override))
	return -1;

	octeon_get_available_coremask(&fuse_coremask);

	if (!cvmx_coremask_is_subset(&fuse_coremask, pcm)) {
	puts("ERROR: Can't boot cores that don't exist!\n");
	puts("Available coremask:\n");
	cvmx_coremask_print(&fuse_coremask);
	return -1;
	}

	if (!cvmx_coremask_is_subset(&coremask_override, pcm)) {
	struct cvmx_coremask print_cm;

	puts("Notice: coremask changed from:\n");
	cvmx_coremask_print(pcm);
	puts("based on coremask_override of:\n");
	cvmx_coremask_print(&coremask_override);
	cvmx_coremask_and(&print_cm, pcm, &coremask_override);
	puts("to:\n");
	cvmx_coremask_print(&print_cm);
	}

	return 0;
	}

	/**
	* In CIU_FUSE for the 78XX, odd and even cores are separated out.
	* For example, a CIU_FUSE value of 0xfffffefffffe indicates that bits 0 and 1
	* are set.
	* This function converts the bit number in the CIU_FUSE register to a
	* physical core number.
	*/
	static int convert_ciu_fuse_to_physical_core(int core, int max_cores)
	{
	if (!octeon_has_feature(OCTEON_FEATURE_CIU3))
	return core;
	else if (!OCTEON_IS_MODEL(OCTEON_CN78XX))
	return core;
	else if (core < (max_cores / 2))
	return core * 2;
	else
	return ((core - (max_cores / 2)) * 2) + 1;
	}

	/**
	* Get the total number of fuses blown as well as the number blown per tad.
	*
	* @param coremask fuse coremask
	* @param[out] tad_blown_count number of cores blown for each tad
	* @param num_tads number of tads
	* @param max_cores maximum number of cores
	*
	* Return: void
	*/
	void fill_tad_corecount(u64 coremask, int tad_blown_count[], int num_tads,
	int max_cores)
	{
	int core, physical_core;

	for (core = 0; core < max_cores; core++) {
	if (!(coremask & (1ULL << core))) {
	int tad;

	physical_core =
	convert_ciu_fuse_to_physical_core(core,
	max_cores);
	tad = physical_core % num_tads;
	tad_blown_count[tad]++;
	}
	}
	}

	u64 get_core_pattern(int num_tads, int max_cores)
	{
	u64 pattern = 1ULL;
	int cnt;

	for (cnt = 1; cnt < (max_cores / num_tads); cnt++)
	pattern \|= pattern << num_tads;

	return pattern;
	}

	/**
	* For CN78XX and CN68XX this function returns the logical coremask from the
	* CIU_FUSE register value. For other models there is no difference.
	*
	* @param ciu_fuse_value fuse value from CIU_FUSE register
	* Return: logical coremask of CIU_FUSE value.
	*/
	u64 get_logical_coremask(u64 ciu_fuse_value)
	{
	int tad_blown_count[MAX_CORE_TADS] = {0};
	int tad;
	u64 logical_coremask = 0;
	u64 tad_mask, pattern;
	int num_tads, max_cores;

	if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
	num_tads = 8;
	max_cores = 48;
	} else if (OCTEON_IS_MODEL(OCTEON_CN73XX) \|\|
	OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
	num_tads = 4;
	max_cores = 16;
	} else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
	num_tads = 4;
	max_cores = 32;
	} else {
	/* Most Octeon devices don't need any mapping. */
	return ciu_fuse_value;
	}

	pattern = get_core_pattern(num_tads, max_cores);
	fill_tad_corecount(ciu_fuse_value, tad_blown_count,
	num_tads, max_cores);

	for (tad = 0; tad < num_tads; tad++) {
	tad_mask = pattern << tad;
	logical_coremask \|= tad_mask >> (tad_blown_count[tad] * num_tads);
	}
	return logical_coremask;
	}

	/**
	* Returns the available coremask either from env or fuses.
	* If the fuses are blown and locked, they are the definitive coremask.
	*
	* @param pcm pointer to coremask to fill in
	* Return: pointer to coremask
	*/
	struct cvmx_coremask octeon_get_available_coremask(struct cvmx_coremask pcm)
	{
	u8 node_mask = 0x01; /* ToDo: Currently only one node is supported */
	u64 ciu_fuse;
	u64 cores;

	cvmx_coremask_clear_all(pcm);

	if (octeon_has_feature(OCTEON_FEATURE_CIU3)) {
	int node;

	cvmx_coremask_for_each_node(node, node_mask) {
	ciu_fuse = (csr_rd(CVMX_CIU_FUSE) &
	0x0000FFFFFFFFFFFFULL);

	ciu_fuse = get_logical_coremask(ciu_fuse);
	cvmx_coremask_set64_node(pcm, node, ciu_fuse);
	}

	return pcm;
	}

	ciu_fuse = (csr_rd(CVMX_CIU_FUSE) & 0x0000FFFFFFFFFFFFULL);
	ciu_fuse = get_logical_coremask(ciu_fuse);

	if (OCTEON_IS_MODEL(OCTEON_CN68XX))
	cvmx_coremask_set64(pcm, ciu_fuse);

	/* Get number of cores from fuse register, convert to coremask */
	cores = __builtin_popcountll(ciu_fuse);

	cvmx_coremask_set_cores(pcm, 0, cores);

	return pcm;
	}

	int cvmx_coremask_str2bmp(struct cvmx_coremask pcm, char hexstr)
	{
	int i, j;
	int l; /* length of the hexstr in characters */
	int lb; /* number of bits taken by hexstr */
	int hldr_offset;/* holder's offset within the coremask */
	int hldr_xsz; /* holder's size in the number of hex digits */
	u64 h;
	char c;

	#define MINUS_ONE (hexstr[0] == '-' && hexstr[1] == '1' && hexstr[2] == 0)
	if (MINUS_ONE) {
	cvmx_coremask_set_all(pcm);
	return 0;
	}

	/* Skip '0x' from hexstr */
	if (hexstr[0] == '0' && (hexstr[1] == 'x' \|\| hexstr[1] == 'X'))
	hexstr += 2;

	if (!strlen(hexstr)) {
	printf("%s: Error: hex string is empty\n", __func__);
	return -2;
	}

	/* Trim leading zeros */
	while (*hexstr == '0')
	hexstr++;

	cvmx_coremask_clear_all(pcm);
	l = strlen(hexstr);

	/* If length is 0 then the hex string must be all zeros */
	if (l == 0)
	return 0;

	for (i = 0; i < l; i++) {
	if (isxdigit((int)hexstr[i]) == 0) {
	printf("%s: Non-hex digit within hexstr\n", __func__);
	return -2;
	}
	}

	lb = (l - 1) * 4;
	if (hexstr[0] > '7')
	lb += 4;
	else if (hexstr[0] > '3')
	lb += 3;
	else if (hexstr[0] > '1')
	lb += 2;
	else
	lb += 1;
	if (lb > CVMX_MIPS_MAX_CORES) {
	printf("%s: hexstr (%s) is too long\n", __func__, hexstr);
	return -1;
	}

	hldr_offset = 0;
	hldr_xsz = 2 * sizeof(u64);
	for (i = l; i > 0; i -= hldr_xsz) {
	c = hexstr[i];
	hexstr[i] = 0;
	j = i - hldr_xsz;
	if (j < 0)
	j = 0;
	h = simple_strtoull(&hexstr[j], NULL, 16);
	if (errno == EINVAL) {
	printf("%s: strtou returns w/ EINVAL\n", __func__);
	return -2;
	}
	pcm->coremask_bitmap[hldr_offset] = h;
	hexstr[i] = c;
	hldr_offset++;
	}

	return 0;
	}

	void cvmx_coremask_print(const struct cvmx_coremask *pcm)
	{
	int i, j;
	int start;
	int found = 0;

	/*
	* Print one node per line. Since the bitmap is stored LSB to MSB
	* we reverse the order when printing.
	*/
	if (!octeon_has_feature(OCTEON_FEATURE_MULTINODE)) {
	start = 0;
	for (j = CVMX_COREMASK_MAX_CORES_PER_NODE -
	CVMX_COREMASK_HLDRSZ;
	j >= 0; j -= CVMX_COREMASK_HLDRSZ) {
	if (pcm->coremask_bitmap[j / CVMX_COREMASK_HLDRSZ] != 0)
	start = 1;
	if (start) {
	printf(" 0x%llx",
	(u64)pcm->coremask_bitmap[j /
	CVMX_COREMASK_HLDRSZ]);
	}
	}

	if (start)
	found = 1;

	/*
	* If the coremask is empty print <EMPTY> so it is not
	* confusing
	*/
	if (!found)
	printf("<EMPTY>");
	printf("\n");

	return;
	}

	for (i = 0; i < CVMX_MAX_USED_CORES_BMP;
	i += CVMX_COREMASK_MAX_CORES_PER_NODE) {
	printf("%s node %d:", i > 0 ? "\n" : "",
	cvmx_coremask_core_to_node(i));
	start = 0;

	for (j = i + CVMX_COREMASK_MAX_CORES_PER_NODE -
	CVMX_COREMASK_HLDRSZ;
	j >= i;
	j -= CVMX_COREMASK_HLDRSZ) {
	/* Don't start printing until we get a non-zero word. */
	if (pcm->coremask_bitmap[j / CVMX_COREMASK_HLDRSZ] != 0)
	start = 1;

	if (start) {
	printf(" 0x%llx", (u64)pcm->coremask_bitmap[j /
	CVMX_COREMASK_HLDRSZ]);
	}
	}

	if (start)
	found = 1;
	}

	i /= CVMX_COREMASK_HLDRSZ;
	for (; i < CVMX_COREMASK_BMPSZ; i++) {
	if (pcm->coremask_bitmap[i]) {
	printf(" EXTRA GARBAGE[%i]: %016llx\n", i,
	(u64)pcm->coremask_bitmap[i]);
	}
	}

	/* If the coremask is empty print <EMPTY> so it is not confusing */
	if (!found)
	printf("<EMPTY>");

	printf("\n");
	}