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Commit c2862e08 authored by Naina Mehta's avatar Naina Mehta
Browse files

soc: qcom: socinfo: Add API for defective core/part information 



Add kernel API to provide defective core and part information.
Also export the information via sysfs entries.

Change-Id: I984effd4247831412117c9d631225bdc2d9f1508
Signed-off-by: default avatarNaina Mehta <quic_nainmeht@quicinc.com>
parent 6920b254

drivers/soc/qcom/socinfo.c

+103 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <soc/qcom/socinfo.h>

#include <linux/soc/qcom/smem.h>

#include <soc/qcom/boot_stats.h>

#include <asm/unaligned.h>



#define BUILD_ID_LENGTH 32

#define CHIP_ID_LENGTH 32
@@ -870,6 +871,42 @@ msm_get_ncluster_array_offset(struct device *dev, 
		socinfo_get_ncluster_array_offset());

}



uint32_t

socinfo_get_cluster_info(enum defective_cluster_type cluster)

{

	uint32_t def_cluster, num_cluster, offset;

	void *cluster_val;

	void *info = socinfo;



	if (cluster >= NUM_CLUSTERS_MAX) {

		pr_err("Bad cluster\n");

		return -EINVAL;

	}



	num_cluster = socinfo_get_num_clusters();

	offset = socinfo_get_ncluster_array_offset();



	if (!num_cluster || !offset)

		return -EINVAL;



	info += offset;

	cluster_val = info + (sizeof(uint32_t) * cluster);

	def_cluster = get_unaligned_le32(cluster_val);



	return def_cluster;

}

EXPORT_SYMBOL(socinfo_get_cluster_info);



static ssize_t

msm_get_defective_cores(struct device *dev,

		struct device_attribute *attr,

		char *buf)

{

	uint32_t def_cluster = socinfo_get_cluster_info(CLUSTER_CPUSS);



	return scnprintf(buf, PAGE_SIZE, "%x\n", def_cluster);

}



static ssize_t

msm_get_num_defective_parts(struct device *dev,

			struct device_attribute *attr,
@@ -888,6 +925,60 @@ msm_get_ndefective_parts_array_offset(struct device *dev, 
		socinfo_get_ndefective_parts_array_offset());

}



static uint32_t

socinfo_get_defective_parts(void)

{

	uint32_t num_parts = socinfo_get_num_defective_parts();

	uint32_t offset = socinfo_get_ndefective_parts_array_offset();

	uint32_t def_parts = 0;

	void *info = socinfo;

	uint32_t part_entry;

	int i;



	if (!num_parts || !offset)

		return -EINVAL;



	info += offset;

	for (i = 0; i < num_parts; i++) {

		part_entry = get_unaligned_le32(info);

		if (part_entry)

			def_parts |= BIT(i);

		info += sizeof(uint32_t);

	}



	return def_parts;

}



bool

socinfo_get_part_info(enum defective_part_type part)

{

	uint32_t partinfo;



	if (part >= NUM_PARTS_MAX) {

		pr_err("Bad part number\n");

		return false;

	}



	partinfo = socinfo_get_defective_parts();

	if (partinfo < 0) {

		pr_err("Failed to get part information\n");

		return false;

	}



	return (partinfo & BIT(part));

}

EXPORT_SYMBOL(socinfo_get_part_info);



static ssize_t

msm_get_defective_parts(struct device *dev,

		struct device_attribute *attr,

		char *buf)

{

	uint32_t def_parts = socinfo_get_defective_parts();



	return scnprintf(buf, PAGE_SIZE, "%x\n", def_parts);

}



static ssize_t

msm_get_nmodem_supported(struct device *dev,

			struct device_attribute *attr,
@@ -1192,6 +1283,10 @@ static struct device_attribute msm_soc_attr_ncluster_array_offset = 
	__ATTR(ncluster_array_offset, 0444,

			msm_get_ncluster_array_offset, NULL);



static struct device_attribute msm_soc_attr_defective_cores =

	__ATTR(defective_cores, 0444,

			msm_get_defective_cores, NULL);



static struct device_attribute msm_soc_attr_num_defective_parts =

	__ATTR(num_defective_parts, 0444,

			msm_get_num_defective_parts, NULL);
@@ -1200,6 +1295,10 @@ static struct device_attribute msm_soc_attr_ndefective_parts_array_offset = 
	__ATTR(ndefective_parts_array_offset, 0444,

			msm_get_ndefective_parts_array_offset, NULL);



static struct device_attribute msm_soc_attr_defective_parts =

	__ATTR(defective_parts, 0444,

			msm_get_defective_parts, NULL);



static struct device_attribute msm_soc_attr_nmodem_supported =

	__ATTR(nmodem_supported, 0444,

			msm_get_nmodem_supported, NULL);
@@ -1398,10 +1497,14 @@ static void __init populate_soc_sysfs_files(struct device *msm_soc_device) 
					&msm_soc_attr_num_clusters);

		device_create_file(msm_soc_device,

					&msm_soc_attr_ncluster_array_offset);

		device_create_file(msm_soc_device,

					&msm_soc_attr_defective_cores);

		device_create_file(msm_soc_device,

					&msm_soc_attr_num_defective_parts);

		device_create_file(msm_soc_device,

				&msm_soc_attr_ndefective_parts_array_offset);

		device_create_file(msm_soc_device,

					&msm_soc_attr_defective_parts);

	case SOCINFO_VERSION(0, 13):

		 device_create_file(msm_soc_device,

					&msm_soc_attr_nproduct_id);

include/soc/qcom/socinfo.h

+26 −0
Original line number Diff line number Diff line
@@ -233,6 +233,30 @@ enum pmic_model { 
	PMIC_MODEL_UNKNOWN	= 0xFFFFFFFF

};



enum defective_part_type {

	PART_UNKNOWN      = 0,

	PART_GPU          = 1,

	PART_VIDEO        = 2,

	PART_CAMERA       = 3,

	PART_DISPLAY      = 4,

	PART_AUDIO        = 5,

	PART_MODEM        = 6,

	PART_WLAN         = 7,

	PART_COMP         = 8,

	PART_SENSORS      = 9,

	PART_NPU          = 10,

	PART_SPSS         = 11,

	PART_NAV          = 12,

	PART_COMP1        = 13,

	PART_DISPLAY1     = 14,

	NUM_PARTS_MAX,

};



enum defective_cluster_type {

	CLUSTER_CPUSS      = 0,

	NUM_CLUSTERS_MAX,

};



enum msm_cpu socinfo_get_msm_cpu(void);

uint32_t socinfo_get_id(void);

uint32_t socinfo_get_version(void);
@@ -243,6 +267,8 @@ uint32_t socinfo_get_platform_type(void); 
uint32_t socinfo_get_platform_subtype(void);

uint32_t socinfo_get_platform_version(void);

uint32_t socinfo_get_serial_number(void);

uint32_t socinfo_get_cluster_info(enum defective_cluster_type cluster);

bool socinfo_get_part_info(enum defective_part_type part);

enum pmic_model socinfo_get_pmic_model(void);

uint32_t socinfo_get_pmic_die_revision(void);

int __init socinfo_init(void) __must_check;