/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (C) 2012-2014 Intel Corporation
 * All rights reserved.
 *
 * Copyright (c) 2023 Chelsio Communications, Inc.
 */

#include <sys/types.h>
#include <sys/sbuf.h>
#ifndef _KERNEL
#include <sys/time.h>
#include <stdio.h>
#endif

#include <dev/nvme/nvme.h>

#include <cam/ctl/ctl_io.h>
#include <cam/ctl/ctl_nvme_all.h>

/* XXX: This duplicates lists in nvme_qpair.c. */

#define OPC_ENTRY(x)		[NVME_OPC_ ## x] = #x

static const char *admin_opcode[256] = {
	OPC_ENTRY(DELETE_IO_SQ),
	OPC_ENTRY(CREATE_IO_SQ),
	OPC_ENTRY(GET_LOG_PAGE),
	OPC_ENTRY(DELETE_IO_CQ),
	OPC_ENTRY(CREATE_IO_CQ),
	OPC_ENTRY(IDENTIFY),
	OPC_ENTRY(ABORT),
	OPC_ENTRY(SET_FEATURES),
	OPC_ENTRY(GET_FEATURES),
	OPC_ENTRY(ASYNC_EVENT_REQUEST),
	OPC_ENTRY(NAMESPACE_MANAGEMENT),
	OPC_ENTRY(FIRMWARE_ACTIVATE),
	OPC_ENTRY(FIRMWARE_IMAGE_DOWNLOAD),
	OPC_ENTRY(DEVICE_SELF_TEST),
	OPC_ENTRY(NAMESPACE_ATTACHMENT),
	OPC_ENTRY(KEEP_ALIVE),
	OPC_ENTRY(DIRECTIVE_SEND),
	OPC_ENTRY(DIRECTIVE_RECEIVE),
	OPC_ENTRY(VIRTUALIZATION_MANAGEMENT),
	OPC_ENTRY(NVME_MI_SEND),
	OPC_ENTRY(NVME_MI_RECEIVE),
	OPC_ENTRY(CAPACITY_MANAGEMENT),
	OPC_ENTRY(LOCKDOWN),
	OPC_ENTRY(DOORBELL_BUFFER_CONFIG),
	OPC_ENTRY(FABRICS_COMMANDS),
	OPC_ENTRY(FORMAT_NVM),
	OPC_ENTRY(SECURITY_SEND),
	OPC_ENTRY(SECURITY_RECEIVE),
	OPC_ENTRY(SANITIZE),
	OPC_ENTRY(GET_LBA_STATUS),
};

static const char *nvm_opcode[256] = {
	OPC_ENTRY(FLUSH),
	OPC_ENTRY(WRITE),
	OPC_ENTRY(READ),
	OPC_ENTRY(WRITE_UNCORRECTABLE),
	OPC_ENTRY(COMPARE),
	OPC_ENTRY(WRITE_ZEROES),
	OPC_ENTRY(DATASET_MANAGEMENT),
	OPC_ENTRY(VERIFY),
	OPC_ENTRY(RESERVATION_REGISTER),
	OPC_ENTRY(RESERVATION_REPORT),
	OPC_ENTRY(RESERVATION_ACQUIRE),
	OPC_ENTRY(RESERVATION_RELEASE),
	OPC_ENTRY(COPY),
};

void
ctl_nvme_command_string(struct ctl_nvmeio *ctnio, struct sbuf *sb)
{
	const char *s, *type;

	if (ctnio->io_hdr.io_type == CTL_IO_NVME_ADMIN) {
		s = admin_opcode[ctnio->cmd.opc];
		type = "ADMIN";
	} else {
		s = nvm_opcode[ctnio->cmd.opc];
		type = "NVM";
	}
	if (s == NULL)
		sbuf_printf(sb, "%s:0x%02x", type, ctnio->cmd.opc);
	else
		sbuf_printf(sb, "%s", s);
}

#define SC_ENTRY(x)		[NVME_SC_ ## x] = #x

static const char *generic_status[256] = {
	SC_ENTRY(SUCCESS),
	SC_ENTRY(INVALID_OPCODE),
	SC_ENTRY(INVALID_FIELD),
	SC_ENTRY(COMMAND_ID_CONFLICT),
	SC_ENTRY(DATA_TRANSFER_ERROR),
	SC_ENTRY(ABORTED_POWER_LOSS),
	SC_ENTRY(INTERNAL_DEVICE_ERROR),
	SC_ENTRY(ABORTED_BY_REQUEST),
	SC_ENTRY(ABORTED_SQ_DELETION),
	SC_ENTRY(ABORTED_FAILED_FUSED),
	SC_ENTRY(ABORTED_MISSING_FUSED),
	SC_ENTRY(INVALID_NAMESPACE_OR_FORMAT),
	SC_ENTRY(COMMAND_SEQUENCE_ERROR),
	SC_ENTRY(INVALID_SGL_SEGMENT_DESCR),
	SC_ENTRY(INVALID_NUMBER_OF_SGL_DESCR),
	SC_ENTRY(DATA_SGL_LENGTH_INVALID),
	SC_ENTRY(METADATA_SGL_LENGTH_INVALID),
	SC_ENTRY(SGL_DESCRIPTOR_TYPE_INVALID),
	SC_ENTRY(INVALID_USE_OF_CMB),
	SC_ENTRY(PRP_OFFET_INVALID),
	SC_ENTRY(ATOMIC_WRITE_UNIT_EXCEEDED),
	SC_ENTRY(OPERATION_DENIED),
	SC_ENTRY(SGL_OFFSET_INVALID),
	SC_ENTRY(HOST_ID_INCONSISTENT_FORMAT),
	SC_ENTRY(KEEP_ALIVE_TIMEOUT_EXPIRED),
	SC_ENTRY(KEEP_ALIVE_TIMEOUT_INVALID),
	SC_ENTRY(ABORTED_DUE_TO_PREEMPT),
	SC_ENTRY(SANITIZE_FAILED),
	SC_ENTRY(SANITIZE_IN_PROGRESS),
	SC_ENTRY(SGL_DATA_BLOCK_GRAN_INVALID),
	SC_ENTRY(NOT_SUPPORTED_IN_CMB),
	SC_ENTRY(NAMESPACE_IS_WRITE_PROTECTED),
	SC_ENTRY(COMMAND_INTERRUPTED),
	SC_ENTRY(TRANSIENT_TRANSPORT_ERROR),

	SC_ENTRY(LBA_OUT_OF_RANGE),
	SC_ENTRY(CAPACITY_EXCEEDED),
	SC_ENTRY(NAMESPACE_NOT_READY),
	SC_ENTRY(RESERVATION_CONFLICT),
	SC_ENTRY(FORMAT_IN_PROGRESS),
};

static const char *command_specific_status[256] = {
	SC_ENTRY(COMPLETION_QUEUE_INVALID),
	SC_ENTRY(INVALID_QUEUE_IDENTIFIER),
	SC_ENTRY(MAXIMUM_QUEUE_SIZE_EXCEEDED),
	SC_ENTRY(ABORT_COMMAND_LIMIT_EXCEEDED),
	SC_ENTRY(ASYNC_EVENT_REQUEST_LIMIT_EXCEEDED),
	SC_ENTRY(INVALID_FIRMWARE_SLOT),
	SC_ENTRY(INVALID_FIRMWARE_IMAGE),
	SC_ENTRY(INVALID_INTERRUPT_VECTOR),
	SC_ENTRY(INVALID_LOG_PAGE),
	SC_ENTRY(INVALID_FORMAT),
	SC_ENTRY(FIRMWARE_REQUIRES_RESET),
	SC_ENTRY(INVALID_QUEUE_DELETION),
	SC_ENTRY(FEATURE_NOT_SAVEABLE),
	SC_ENTRY(FEATURE_NOT_CHANGEABLE),
	SC_ENTRY(FEATURE_NOT_NS_SPECIFIC),
	SC_ENTRY(FW_ACT_REQUIRES_NVMS_RESET),
	SC_ENTRY(FW_ACT_REQUIRES_RESET),
	SC_ENTRY(FW_ACT_REQUIRES_TIME),
	SC_ENTRY(FW_ACT_PROHIBITED),
	SC_ENTRY(OVERLAPPING_RANGE),
	SC_ENTRY(NS_INSUFFICIENT_CAPACITY),
	SC_ENTRY(NS_ID_UNAVAILABLE),
	SC_ENTRY(NS_ALREADY_ATTACHED),
	SC_ENTRY(NS_IS_PRIVATE),
	SC_ENTRY(NS_NOT_ATTACHED),
	SC_ENTRY(THIN_PROV_NOT_SUPPORTED),
	SC_ENTRY(CTRLR_LIST_INVALID),
	SC_ENTRY(SELF_TEST_IN_PROGRESS),
	SC_ENTRY(BOOT_PART_WRITE_PROHIB),
	SC_ENTRY(INVALID_CTRLR_ID),
	SC_ENTRY(INVALID_SEC_CTRLR_STATE),
	SC_ENTRY(INVALID_NUM_OF_CTRLR_RESRC),
	SC_ENTRY(INVALID_RESOURCE_ID),
	SC_ENTRY(SANITIZE_PROHIBITED_WPMRE),
	SC_ENTRY(ANA_GROUP_ID_INVALID),
	SC_ENTRY(ANA_ATTACH_FAILED),

	SC_ENTRY(CONFLICTING_ATTRIBUTES),
	SC_ENTRY(INVALID_PROTECTION_INFO),
	SC_ENTRY(ATTEMPTED_WRITE_TO_RO_PAGE),
};

static const char *media_error_status[256] = {
	SC_ENTRY(WRITE_FAULTS),
	SC_ENTRY(UNRECOVERED_READ_ERROR),
	SC_ENTRY(GUARD_CHECK_ERROR),
	SC_ENTRY(APPLICATION_TAG_CHECK_ERROR),
	SC_ENTRY(REFERENCE_TAG_CHECK_ERROR),
	SC_ENTRY(COMPARE_FAILURE),
	SC_ENTRY(ACCESS_DENIED),
	SC_ENTRY(DEALLOCATED_OR_UNWRITTEN),
};

static const char *path_related_status[256] = {
	SC_ENTRY(INTERNAL_PATH_ERROR),
	SC_ENTRY(ASYMMETRIC_ACCESS_PERSISTENT_LOSS),
	SC_ENTRY(ASYMMETRIC_ACCESS_INACCESSIBLE),
	SC_ENTRY(ASYMMETRIC_ACCESS_TRANSITION),
	SC_ENTRY(CONTROLLER_PATHING_ERROR),
	SC_ENTRY(HOST_PATHING_ERROR),
	SC_ENTRY(COMMAND_ABORTED_BY_HOST),
};

void
ctl_nvme_status_string(struct ctl_nvmeio *ctnio, struct sbuf *sb)
{
	const char *s, *type;
	uint16_t status;

	status = le16toh(ctnio->cpl.status);
	switch (NVME_STATUS_GET_SCT(status)) {
	case NVME_SCT_GENERIC:
		s = generic_status[NVME_STATUS_GET_SC(status)];
		type = "GENERIC";
		break;
	case NVME_SCT_COMMAND_SPECIFIC:
		s = command_specific_status[NVME_STATUS_GET_SC(status)];
		type = "COMMAND SPECIFIC";
		break;
	case NVME_SCT_MEDIA_ERROR:
		s = media_error_status[NVME_STATUS_GET_SC(status)];
		type = "MEDIA ERROR";
		break;
	case NVME_SCT_PATH_RELATED:
		s = path_related_status[NVME_STATUS_GET_SC(status)];
		type = "PATH RELATED";
		break;
	case NVME_SCT_VENDOR_SPECIFIC:
		s = NULL;
		type = "VENDOR SPECIFIC";
		break;
	default:
		s = "RESERVED";
		type = NULL;
		break;
	}

	if (s == NULL)
		sbuf_printf(sb, "%s:0x%02x", type, NVME_STATUS_GET_SC(status));
	else
		sbuf_printf(sb, "%s", s);
	if (NVME_STATUS_GET_M(status) != 0)
		sbuf_printf(sb, " M");
	if (NVME_STATUS_GET_DNR(status) != 0)
		sbuf_printf(sb, " DNR");
}