+++ /dev/null
-/*
- * NVM Express device driver
- * Copyright (c) 2011-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- */
-
-/*
- * Refer to the SCSI-NVMe Translation spec for details on how
- * each command is translated.
- */
-
-#include <linux/nvme.h>
-#include <linux/bio.h>
-#include <linux/bitops.h>
-#include <linux/blkdev.h>
-#include <linux/compat.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/genhd.h>
-#include <linux/idr.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kdev_t.h>
-#include <linux/kthread.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/pci.h>
-#include <linux/poison.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <scsi/sg.h>
-#include <scsi/scsi.h>
-
-
-static int sg_version_num = 30534; /* 2 digits for each component */
-
-#define SNTI_TRANSLATION_SUCCESS 0
-#define SNTI_INTERNAL_ERROR 1
-
-/* VPD Page Codes */
-#define VPD_SUPPORTED_PAGES 0x00
-#define VPD_SERIAL_NUMBER 0x80
-#define VPD_DEVICE_IDENTIFIERS 0x83
-#define VPD_EXTENDED_INQUIRY 0x86
-#define VPD_BLOCK_LIMITS 0xB0
-#define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1
-
-/* CDB offsets */
-#define REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET 6
-#define REPORT_LUNS_SR_OFFSET 2
-#define READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET 10
-#define REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET 4
-#define REQUEST_SENSE_DESC_OFFSET 1
-#define REQUEST_SENSE_DESC_MASK 0x01
-#define DESCRIPTOR_FORMAT_SENSE_DATA_TYPE 1
-#define INQUIRY_EVPD_BYTE_OFFSET 1
-#define INQUIRY_PAGE_CODE_BYTE_OFFSET 2
-#define INQUIRY_EVPD_BIT_MASK 1
-#define INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET 3
-#define START_STOP_UNIT_CDB_IMMED_OFFSET 1
-#define START_STOP_UNIT_CDB_IMMED_MASK 0x1
-#define START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET 3
-#define START_STOP_UNIT_CDB_POWER_COND_MOD_MASK 0xF
-#define START_STOP_UNIT_CDB_POWER_COND_OFFSET 4
-#define START_STOP_UNIT_CDB_POWER_COND_MASK 0xF0
-#define START_STOP_UNIT_CDB_NO_FLUSH_OFFSET 4
-#define START_STOP_UNIT_CDB_NO_FLUSH_MASK 0x4
-#define START_STOP_UNIT_CDB_START_OFFSET 4
-#define START_STOP_UNIT_CDB_START_MASK 0x1
-#define WRITE_BUFFER_CDB_MODE_OFFSET 1
-#define WRITE_BUFFER_CDB_MODE_MASK 0x1F
-#define WRITE_BUFFER_CDB_BUFFER_ID_OFFSET 2
-#define WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET 3
-#define WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET 6
-#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET 1
-#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK 0xC0
-#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT 6
-#define FORMAT_UNIT_CDB_LONG_LIST_OFFSET 1
-#define FORMAT_UNIT_CDB_LONG_LIST_MASK 0x20
-#define FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET 1
-#define FORMAT_UNIT_CDB_FORMAT_DATA_MASK 0x10
-#define FORMAT_UNIT_SHORT_PARM_LIST_LEN 4
-#define FORMAT_UNIT_LONG_PARM_LIST_LEN 8
-#define FORMAT_UNIT_PROT_INT_OFFSET 3
-#define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET 0
-#define FORMAT_UNIT_PROT_FIELD_USAGE_MASK 0x07
-#define UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET 7
-
-/* Misc. defines */
-#define NIBBLE_SHIFT 4
-#define FIXED_SENSE_DATA 0x70
-#define DESC_FORMAT_SENSE_DATA 0x72
-#define FIXED_SENSE_DATA_ADD_LENGTH 10
-#define LUN_ENTRY_SIZE 8
-#define LUN_DATA_HEADER_SIZE 8
-#define ALL_LUNS_RETURNED 0x02
-#define ALL_WELL_KNOWN_LUNS_RETURNED 0x01
-#define RESTRICTED_LUNS_RETURNED 0x00
-#define NVME_POWER_STATE_START_VALID 0x00
-#define NVME_POWER_STATE_ACTIVE 0x01
-#define NVME_POWER_STATE_IDLE 0x02
-#define NVME_POWER_STATE_STANDBY 0x03
-#define NVME_POWER_STATE_LU_CONTROL 0x07
-#define POWER_STATE_0 0
-#define POWER_STATE_1 1
-#define POWER_STATE_2 2
-#define POWER_STATE_3 3
-#define DOWNLOAD_SAVE_ACTIVATE 0x05
-#define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E
-#define ACTIVATE_DEFERRED_MICROCODE 0x0F
-#define FORMAT_UNIT_IMMED_MASK 0x2
-#define FORMAT_UNIT_IMMED_OFFSET 1
-#define KELVIN_TEMP_FACTOR 273
-#define FIXED_FMT_SENSE_DATA_SIZE 18
-#define DESC_FMT_SENSE_DATA_SIZE 8
-
-/* SCSI/NVMe defines and bit masks */
-#define INQ_STANDARD_INQUIRY_PAGE 0x00
-#define INQ_SUPPORTED_VPD_PAGES_PAGE 0x00
-#define INQ_UNIT_SERIAL_NUMBER_PAGE 0x80
-#define INQ_DEVICE_IDENTIFICATION_PAGE 0x83
-#define INQ_EXTENDED_INQUIRY_DATA_PAGE 0x86
-#define INQ_BDEV_LIMITS_PAGE 0xB0
-#define INQ_BDEV_CHARACTERISTICS_PAGE 0xB1
-#define INQ_SERIAL_NUMBER_LENGTH 0x14
-#define INQ_NUM_SUPPORTED_VPD_PAGES 6
-#define VERSION_SPC_4 0x06
-#define ACA_UNSUPPORTED 0
-#define STANDARD_INQUIRY_LENGTH 36
-#define ADDITIONAL_STD_INQ_LENGTH 31
-#define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C
-#define RESERVED_FIELD 0
-
-/* SCSI READ/WRITE Defines */
-#define IO_CDB_WP_MASK 0xE0
-#define IO_CDB_WP_SHIFT 5
-#define IO_CDB_FUA_MASK 0x8
-#define IO_6_CDB_LBA_OFFSET 0
-#define IO_6_CDB_LBA_MASK 0x001FFFFF
-#define IO_6_CDB_TX_LEN_OFFSET 4
-#define IO_6_DEFAULT_TX_LEN 256
-#define IO_10_CDB_LBA_OFFSET 2
-#define IO_10_CDB_TX_LEN_OFFSET 7
-#define IO_10_CDB_WP_OFFSET 1
-#define IO_10_CDB_FUA_OFFSET 1
-#define IO_12_CDB_LBA_OFFSET 2
-#define IO_12_CDB_TX_LEN_OFFSET 6
-#define IO_12_CDB_WP_OFFSET 1
-#define IO_12_CDB_FUA_OFFSET 1
-#define IO_16_CDB_FUA_OFFSET 1
-#define IO_16_CDB_WP_OFFSET 1
-#define IO_16_CDB_LBA_OFFSET 2
-#define IO_16_CDB_TX_LEN_OFFSET 10
-
-/* Mode Sense/Select defines */
-#define MODE_PAGE_INFO_EXCEP 0x1C
-#define MODE_PAGE_CACHING 0x08
-#define MODE_PAGE_CONTROL 0x0A
-#define MODE_PAGE_POWER_CONDITION 0x1A
-#define MODE_PAGE_RETURN_ALL 0x3F
-#define MODE_PAGE_BLK_DES_LEN 0x08
-#define MODE_PAGE_LLBAA_BLK_DES_LEN 0x10
-#define MODE_PAGE_CACHING_LEN 0x14
-#define MODE_PAGE_CONTROL_LEN 0x0C
-#define MODE_PAGE_POW_CND_LEN 0x28
-#define MODE_PAGE_INF_EXC_LEN 0x0C
-#define MODE_PAGE_ALL_LEN 0x54
-#define MODE_SENSE6_MPH_SIZE 4
-#define MODE_SENSE6_ALLOC_LEN_OFFSET 4
-#define MODE_SENSE_PAGE_CONTROL_OFFSET 2
-#define MODE_SENSE_PAGE_CONTROL_MASK 0xC0
-#define MODE_SENSE_PAGE_CODE_OFFSET 2
-#define MODE_SENSE_PAGE_CODE_MASK 0x3F
-#define MODE_SENSE_LLBAA_OFFSET 1
-#define MODE_SENSE_LLBAA_MASK 0x10
-#define MODE_SENSE_LLBAA_SHIFT 4
-#define MODE_SENSE_DBD_OFFSET 1
-#define MODE_SENSE_DBD_MASK 8
-#define MODE_SENSE_DBD_SHIFT 3
-#define MODE_SENSE10_MPH_SIZE 8
-#define MODE_SENSE10_ALLOC_LEN_OFFSET 7
-#define MODE_SELECT_CDB_PAGE_FORMAT_OFFSET 1
-#define MODE_SELECT_CDB_SAVE_PAGES_OFFSET 1
-#define MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET 4
-#define MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET 7
-#define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10
-#define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1
-#define MODE_SELECT_6_BD_OFFSET 3
-#define MODE_SELECT_10_BD_OFFSET 6
-#define MODE_SELECT_10_LLBAA_OFFSET 4
-#define MODE_SELECT_10_LLBAA_MASK 1
-#define MODE_SELECT_6_MPH_SIZE 4
-#define MODE_SELECT_10_MPH_SIZE 8
-#define CACHING_MODE_PAGE_WCE_MASK 0x04
-#define MODE_SENSE_BLK_DESC_ENABLED 0
-#define MODE_SENSE_BLK_DESC_COUNT 1
-#define MODE_SELECT_PAGE_CODE_MASK 0x3F
-#define SHORT_DESC_BLOCK 8
-#define LONG_DESC_BLOCK 16
-#define MODE_PAGE_POW_CND_LEN_FIELD 0x26
-#define MODE_PAGE_INF_EXC_LEN_FIELD 0x0A
-#define MODE_PAGE_CACHING_LEN_FIELD 0x12
-#define MODE_PAGE_CONTROL_LEN_FIELD 0x0A
-#define MODE_SENSE_PC_CURRENT_VALUES 0
-
-/* Log Sense defines */
-#define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE 0x00
-#define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07
-#define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F
-#define LOG_PAGE_TEMPERATURE_PAGE 0x0D
-#define LOG_SENSE_CDB_SP_OFFSET 1
-#define LOG_SENSE_CDB_SP_NOT_ENABLED 0
-#define LOG_SENSE_CDB_PC_OFFSET 2
-#define LOG_SENSE_CDB_PC_MASK 0xC0
-#define LOG_SENSE_CDB_PC_SHIFT 6
-#define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1
-#define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F
-#define LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET 7
-#define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8
-#define LOG_INFO_EXCP_PAGE_LENGTH 0xC
-#define REMAINING_TEMP_PAGE_LENGTH 0xC
-#define LOG_TEMP_PAGE_LENGTH 0x10
-#define LOG_TEMP_UNKNOWN 0xFF
-#define SUPPORTED_LOG_PAGES_PAGE_LENGTH 0x3
-
-/* Read Capacity defines */
-#define READ_CAP_10_RESP_SIZE 8
-#define READ_CAP_16_RESP_SIZE 32
-
-/* NVMe Namespace and Command Defines */
-#define BYTES_TO_DWORDS 4
-#define NVME_MAX_FIRMWARE_SLOT 7
-
-/* Report LUNs defines */
-#define REPORT_LUNS_FIRST_LUN_OFFSET 8
-
-/* SCSI ADDITIONAL SENSE Codes */
-
-#define SCSI_ASC_NO_SENSE 0x00
-#define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT 0x03
-#define SCSI_ASC_LUN_NOT_READY 0x04
-#define SCSI_ASC_WARNING 0x0B
-#define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED 0x10
-#define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED 0x10
-#define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED 0x10
-#define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11
-#define SCSI_ASC_MISCOMPARE_DURING_VERIFY 0x1D
-#define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID 0x20
-#define SCSI_ASC_ILLEGAL_COMMAND 0x20
-#define SCSI_ASC_ILLEGAL_BLOCK 0x21
-#define SCSI_ASC_INVALID_CDB 0x24
-#define SCSI_ASC_INVALID_LUN 0x25
-#define SCSI_ASC_INVALID_PARAMETER 0x26
-#define SCSI_ASC_FORMAT_COMMAND_FAILED 0x31
-#define SCSI_ASC_INTERNAL_TARGET_FAILURE 0x44
-
-/* SCSI ADDITIONAL SENSE Code Qualifiers */
-
-#define SCSI_ASCQ_CAUSE_NOT_REPORTABLE 0x00
-#define SCSI_ASCQ_FORMAT_COMMAND_FAILED 0x01
-#define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED 0x01
-#define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED 0x02
-#define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED 0x03
-#define SCSI_ASCQ_FORMAT_IN_PROGRESS 0x04
-#define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08
-#define SCSI_ASCQ_INVALID_LUN_ID 0x09
-
-/**
- * DEVICE_SPECIFIC_PARAMETER in mode parameter header (see sbc2r16) to
- * enable DPOFUA support type 0x10 value.
- */
-#define DEVICE_SPECIFIC_PARAMETER 0
-#define VPD_ID_DESCRIPTOR_LENGTH sizeof(VPD_IDENTIFICATION_DESCRIPTOR)
-
-/* MACROs to extract information from CDBs */
-
-#define GET_OPCODE(cdb) cdb[0]
-
-#define GET_U8_FROM_CDB(cdb, index) (cdb[index] << 0)
-
-#define GET_U16_FROM_CDB(cdb, index) ((cdb[index] << 8) | (cdb[index + 1] << 0))
-
-#define GET_U24_FROM_CDB(cdb, index) ((cdb[index] << 16) | \
-(cdb[index + 1] << 8) | \
-(cdb[index + 2] << 0))
-
-#define GET_U32_FROM_CDB(cdb, index) ((cdb[index] << 24) | \
-(cdb[index + 1] << 16) | \
-(cdb[index + 2] << 8) | \
-(cdb[index + 3] << 0))
-
-#define GET_U64_FROM_CDB(cdb, index) ((((u64)cdb[index]) << 56) | \
-(((u64)cdb[index + 1]) << 48) | \
-(((u64)cdb[index + 2]) << 40) | \
-(((u64)cdb[index + 3]) << 32) | \
-(((u64)cdb[index + 4]) << 24) | \
-(((u64)cdb[index + 5]) << 16) | \
-(((u64)cdb[index + 6]) << 8) | \
-(((u64)cdb[index + 7]) << 0))
-
-/* Inquiry Helper Macros */
-#define GET_INQ_EVPD_BIT(cdb) \
-((GET_U8_FROM_CDB(cdb, INQUIRY_EVPD_BYTE_OFFSET) & \
-INQUIRY_EVPD_BIT_MASK) ? 1 : 0)
-
-#define GET_INQ_PAGE_CODE(cdb) \
-(GET_U8_FROM_CDB(cdb, INQUIRY_PAGE_CODE_BYTE_OFFSET))
-
-#define GET_INQ_ALLOC_LENGTH(cdb) \
-(GET_U16_FROM_CDB(cdb, INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET))
-
-/* Report LUNs Helper Macros */
-#define GET_REPORT_LUNS_ALLOC_LENGTH(cdb) \
-(GET_U32_FROM_CDB(cdb, REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET))
-
-/* Read Capacity Helper Macros */
-#define GET_READ_CAP_16_ALLOC_LENGTH(cdb) \
-(GET_U32_FROM_CDB(cdb, READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET))
-
-#define IS_READ_CAP_16(cdb) \
-((cdb[0] == SERVICE_ACTION_IN_16 && cdb[1] == SAI_READ_CAPACITY_16) ? 1 : 0)
-
-/* Request Sense Helper Macros */
-#define GET_REQUEST_SENSE_ALLOC_LENGTH(cdb) \
-(GET_U8_FROM_CDB(cdb, REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET))
-
-/* Mode Sense Helper Macros */
-#define GET_MODE_SENSE_DBD(cdb) \
-((GET_U8_FROM_CDB(cdb, MODE_SENSE_DBD_OFFSET) & MODE_SENSE_DBD_MASK) >> \
-MODE_SENSE_DBD_SHIFT)
-
-#define GET_MODE_SENSE_LLBAA(cdb) \
-((GET_U8_FROM_CDB(cdb, MODE_SENSE_LLBAA_OFFSET) & \
-MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT)
-
-#define GET_MODE_SENSE_MPH_SIZE(cdb10) \
-(cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE)
-
-
-/* Struct to gather data that needs to be extracted from a SCSI CDB.
- Not conforming to any particular CDB variant, but compatible with all. */
-
-struct nvme_trans_io_cdb {
- u8 fua;
- u8 prot_info;
- u64 lba;
- u32 xfer_len;
-};
-
-
-/* Internal Helper Functions */
-
-
-/* Copy data to userspace memory */
-
-static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from,
- unsigned long n)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- unsigned long not_copied;
- int i;
- void *index = from;
- size_t remaining = n;
- size_t xfer_len;
-
- if (hdr->iovec_count > 0) {
- struct sg_iovec sgl;
-
- for (i = 0; i < hdr->iovec_count; i++) {
- not_copied = copy_from_user(&sgl, hdr->dxferp +
- i * sizeof(struct sg_iovec),
- sizeof(struct sg_iovec));
- if (not_copied)
- return -EFAULT;
- xfer_len = min(remaining, sgl.iov_len);
- not_copied = copy_to_user(sgl.iov_base, index,
- xfer_len);
- if (not_copied) {
- res = -EFAULT;
- break;
- }
- index += xfer_len;
- remaining -= xfer_len;
- if (remaining == 0)
- break;
- }
- return res;
- }
- not_copied = copy_to_user(hdr->dxferp, from, n);
- if (not_copied)
- res = -EFAULT;
- return res;
-}
-
-/* Copy data from userspace memory */
-
-static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to,
- unsigned long n)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- unsigned long not_copied;
- int i;
- void *index = to;
- size_t remaining = n;
- size_t xfer_len;
-
- if (hdr->iovec_count > 0) {
- struct sg_iovec sgl;
-
- for (i = 0; i < hdr->iovec_count; i++) {
- not_copied = copy_from_user(&sgl, hdr->dxferp +
- i * sizeof(struct sg_iovec),
- sizeof(struct sg_iovec));
- if (not_copied)
- return -EFAULT;
- xfer_len = min(remaining, sgl.iov_len);
- not_copied = copy_from_user(index, sgl.iov_base,
- xfer_len);
- if (not_copied) {
- res = -EFAULT;
- break;
- }
- index += xfer_len;
- remaining -= xfer_len;
- if (remaining == 0)
- break;
- }
- return res;
- }
-
- not_copied = copy_from_user(to, hdr->dxferp, n);
- if (not_copied)
- res = -EFAULT;
- return res;
-}
-
-/* Status/Sense Buffer Writeback */
-
-static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key,
- u8 asc, u8 ascq)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 xfer_len;
- u8 resp[DESC_FMT_SENSE_DATA_SIZE];
-
- if (scsi_status_is_good(status)) {
- hdr->status = SAM_STAT_GOOD;
- hdr->masked_status = GOOD;
- hdr->host_status = DID_OK;
- hdr->driver_status = DRIVER_OK;
- hdr->sb_len_wr = 0;
- } else {
- hdr->status = status;
- hdr->masked_status = status >> 1;
- hdr->host_status = DID_OK;
- hdr->driver_status = DRIVER_OK;
-
- memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE);
- resp[0] = DESC_FORMAT_SENSE_DATA;
- resp[1] = sense_key;
- resp[2] = asc;
- resp[3] = ascq;
-
- xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE);
- hdr->sb_len_wr = xfer_len;
- if (copy_to_user(hdr->sbp, resp, xfer_len) > 0)
- res = -EFAULT;
- }
-
- return res;
-}
-
-static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc)
-{
- u8 status, sense_key, asc, ascq;
- int res = SNTI_TRANSLATION_SUCCESS;
-
- /* For non-nvme (Linux) errors, simply return the error code */
- if (nvme_sc < 0)
- return nvme_sc;
-
- /* Mask DNR, More, and reserved fields */
- nvme_sc &= 0x7FF;
-
- switch (nvme_sc) {
- /* Generic Command Status */
- case NVME_SC_SUCCESS:
- status = SAM_STAT_GOOD;
- sense_key = NO_SENSE;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_INVALID_OPCODE:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_ILLEGAL_COMMAND;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_INVALID_FIELD:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_INVALID_CDB;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_DATA_XFER_ERROR:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_POWER_LOSS:
- status = SAM_STAT_TASK_ABORTED;
- sense_key = ABORTED_COMMAND;
- asc = SCSI_ASC_WARNING;
- ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED;
- break;
- case NVME_SC_INTERNAL:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = HARDWARE_ERROR;
- asc = SCSI_ASC_INTERNAL_TARGET_FAILURE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_ABORT_REQ:
- status = SAM_STAT_TASK_ABORTED;
- sense_key = ABORTED_COMMAND;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_ABORT_QUEUE:
- status = SAM_STAT_TASK_ABORTED;
- sense_key = ABORTED_COMMAND;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_FUSED_FAIL:
- status = SAM_STAT_TASK_ABORTED;
- sense_key = ABORTED_COMMAND;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_FUSED_MISSING:
- status = SAM_STAT_TASK_ABORTED;
- sense_key = ABORTED_COMMAND;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_INVALID_NS:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
- ascq = SCSI_ASCQ_INVALID_LUN_ID;
- break;
- case NVME_SC_LBA_RANGE:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_ILLEGAL_BLOCK;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_CAP_EXCEEDED:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_NS_NOT_READY:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = NOT_READY;
- asc = SCSI_ASC_LUN_NOT_READY;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
-
- /* Command Specific Status */
- case NVME_SC_INVALID_FORMAT:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_FORMAT_COMMAND_FAILED;
- ascq = SCSI_ASCQ_FORMAT_COMMAND_FAILED;
- break;
- case NVME_SC_BAD_ATTRIBUTES:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_INVALID_CDB;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
-
- /* Media Errors */
- case NVME_SC_WRITE_FAULT:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_READ_ERROR:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_UNRECOVERED_READ_ERROR;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_GUARD_CHECK:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED;
- ascq = SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED;
- break;
- case NVME_SC_APPTAG_CHECK:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED;
- ascq = SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED;
- break;
- case NVME_SC_REFTAG_CHECK:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MEDIUM_ERROR;
- asc = SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED;
- ascq = SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED;
- break;
- case NVME_SC_COMPARE_FAILED:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = MISCOMPARE;
- asc = SCSI_ASC_MISCOMPARE_DURING_VERIFY;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- case NVME_SC_ACCESS_DENIED:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
- ascq = SCSI_ASCQ_INVALID_LUN_ID;
- break;
-
- /* Unspecified/Default */
- case NVME_SC_CMDID_CONFLICT:
- case NVME_SC_CMD_SEQ_ERROR:
- case NVME_SC_CQ_INVALID:
- case NVME_SC_QID_INVALID:
- case NVME_SC_QUEUE_SIZE:
- case NVME_SC_ABORT_LIMIT:
- case NVME_SC_ABORT_MISSING:
- case NVME_SC_ASYNC_LIMIT:
- case NVME_SC_FIRMWARE_SLOT:
- case NVME_SC_FIRMWARE_IMAGE:
- case NVME_SC_INVALID_VECTOR:
- case NVME_SC_INVALID_LOG_PAGE:
- default:
- status = SAM_STAT_CHECK_CONDITION;
- sense_key = ILLEGAL_REQUEST;
- asc = SCSI_ASC_NO_SENSE;
- ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- break;
- }
-
- res = nvme_trans_completion(hdr, status, sense_key, asc, ascq);
-
- return res;
-}
-
-/* INQUIRY Helper Functions */
-
-static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *inq_response,
- int alloc_len)
-{
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ns *id_ns;
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- int xfer_len;
- u8 resp_data_format = 0x02;
- u8 protect;
- u8 cmdque = 0x01 << 1;
- u8 fw_offset = sizeof(dev->firmware_rev);
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
-
- /* nvme ns identify - use DPS value for PROTECT field */
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- /*
- * If nvme_sc was -ve, res will be -ve here.
- * If nvme_sc was +ve, the status would bace been translated, and res
- * can only be 0 or -ve.
- * - If 0 && nvme_sc > 0, then go into next if where res gets nvme_sc
- * - If -ve, return because its a Linux error.
- */
- if (res)
- goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
- id_ns = mem;
- (id_ns->dps) ? (protect = 0x01) : (protect = 0);
-
- memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
- inq_response[2] = VERSION_SPC_4;
- inq_response[3] = resp_data_format; /*normaca=0 | hisup=0 */
- inq_response[4] = ADDITIONAL_STD_INQ_LENGTH;
- inq_response[5] = protect; /* sccs=0 | acc=0 | tpgs=0 | pc3=0 */
- inq_response[7] = cmdque; /* wbus16=0 | sync=0 | vs=0 */
- strncpy(&inq_response[8], "NVMe ", 8);
- strncpy(&inq_response[16], dev->model, 16);
-
- while (dev->firmware_rev[fw_offset - 1] == ' ' && fw_offset > 4)
- fw_offset--;
- fw_offset -= 4;
- strncpy(&inq_response[32], dev->firmware_rev + fw_offset, 4);
-
- xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- out_free:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
- dma_addr);
- out_dma:
- return res;
-}
-
-static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *inq_response,
- int alloc_len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
-
- memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
- inq_response[1] = INQ_SUPPORTED_VPD_PAGES_PAGE; /* Page Code */
- inq_response[3] = INQ_NUM_SUPPORTED_VPD_PAGES; /* Page Length */
- inq_response[4] = INQ_SUPPORTED_VPD_PAGES_PAGE;
- inq_response[5] = INQ_UNIT_SERIAL_NUMBER_PAGE;
- inq_response[6] = INQ_DEVICE_IDENTIFICATION_PAGE;
- inq_response[7] = INQ_EXTENDED_INQUIRY_DATA_PAGE;
- inq_response[8] = INQ_BDEV_CHARACTERISTICS_PAGE;
- inq_response[9] = INQ_BDEV_LIMITS_PAGE;
-
- xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- return res;
-}
-
-static int nvme_trans_unit_serial_page(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *inq_response,
- int alloc_len)
-{
- struct nvme_dev *dev = ns->dev;
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
-
- memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
- inq_response[1] = INQ_UNIT_SERIAL_NUMBER_PAGE; /* Page Code */
- inq_response[3] = INQ_SERIAL_NUMBER_LENGTH; /* Page Length */
- strncpy(&inq_response[4], dev->serial, INQ_SERIAL_NUMBER_LENGTH);
-
- xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- return res;
-}
-
-static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *inq_response, int alloc_len)
-{
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- int xfer_len;
- __be32 tmp_id = cpu_to_be32(ns->ns_id);
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
-
- memset(inq_response, 0, alloc_len);
- inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE; /* Page Code */
- if (readl(&dev->bar->vs) >= NVME_VS(1, 1)) {
- struct nvme_id_ns *id_ns = mem;
- void *eui = id_ns->eui64;
- int len = sizeof(id_ns->eui64);
-
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
-
- if (readl(&dev->bar->vs) >= NVME_VS(1, 2)) {
- if (bitmap_empty(eui, len * 8)) {
- eui = id_ns->nguid;
- len = sizeof(id_ns->nguid);
- }
- }
- if (bitmap_empty(eui, len * 8))
- goto scsi_string;
-
- inq_response[3] = 4 + len; /* Page Length */
- /* Designation Descriptor start */
- inq_response[4] = 0x01; /* Proto ID=0h | Code set=1h */
- inq_response[5] = 0x02; /* PIV=0b | Asso=00b | Designator Type=2h */
- inq_response[6] = 0x00; /* Rsvd */
- inq_response[7] = len; /* Designator Length */
- memcpy(&inq_response[8], eui, len);
- } else {
- scsi_string:
- if (alloc_len < 72) {
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out_free;
- }
- inq_response[3] = 0x48; /* Page Length */
- /* Designation Descriptor start */
- inq_response[4] = 0x03; /* Proto ID=0h | Code set=3h */
- inq_response[5] = 0x08; /* PIV=0b | Asso=00b | Designator Type=8h */
- inq_response[6] = 0x00; /* Rsvd */
- inq_response[7] = 0x44; /* Designator Length */
-
- sprintf(&inq_response[8], "%04x", dev->pci_dev->vendor);
- memcpy(&inq_response[12], dev->model, sizeof(dev->model));
- sprintf(&inq_response[52], "%04x", tmp_id);
- memcpy(&inq_response[56], dev->serial, sizeof(dev->serial));
- }
- xfer_len = alloc_len;
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- out_free:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
- dma_addr);
- out_dma:
- return res;
-}
-
-static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- int alloc_len)
-{
- u8 *inq_response;
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ctrl *id_ctrl;
- struct nvme_id_ns *id_ns;
- int xfer_len;
- u8 microcode = 0x80;
- u8 spt;
- u8 spt_lut[8] = {0, 0, 2, 1, 4, 6, 5, 7};
- u8 grd_chk, app_chk, ref_chk, protect;
- u8 uask_sup = 0x20;
- u8 v_sup;
- u8 luiclr = 0x01;
-
- inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
- if (inq_response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
-
- /* nvme ns identify */
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
- id_ns = mem;
- spt = spt_lut[(id_ns->dpc) & 0x07] << 3;
- (id_ns->dps) ? (protect = 0x01) : (protect = 0);
- grd_chk = protect << 2;
- app_chk = protect << 1;
- ref_chk = protect;
-
- /* nvme controller identify */
- nvme_sc = nvme_identify(dev, 0, 1, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_free;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_free;
- }
- id_ctrl = mem;
- v_sup = id_ctrl->vwc;
-
- memset(inq_response, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
- inq_response[1] = INQ_EXTENDED_INQUIRY_DATA_PAGE; /* Page Code */
- inq_response[2] = 0x00; /* Page Length MSB */
- inq_response[3] = 0x3C; /* Page Length LSB */
- inq_response[4] = microcode | spt | grd_chk | app_chk | ref_chk;
- inq_response[5] = uask_sup;
- inq_response[6] = v_sup;
- inq_response[7] = luiclr;
- inq_response[8] = 0;
- inq_response[9] = 0;
-
- xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- out_free:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
- dma_addr);
- out_dma:
- kfree(inq_response);
- out_mem:
- return res;
-}
-
-static int nvme_trans_bdev_limits_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *inq_response, int alloc_len)
-{
- __be32 max_sectors = cpu_to_be32(
- nvme_block_nr(ns, queue_max_hw_sectors(ns->queue)));
- __be32 max_discard = cpu_to_be32(ns->queue->limits.max_discard_sectors);
- __be32 discard_desc_count = cpu_to_be32(0x100);
-
- memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
- inq_response[1] = VPD_BLOCK_LIMITS;
- inq_response[3] = 0x3c; /* Page Length */
- memcpy(&inq_response[8], &max_sectors, sizeof(u32));
- memcpy(&inq_response[20], &max_discard, sizeof(u32));
-
- if (max_discard)
- memcpy(&inq_response[24], &discard_desc_count, sizeof(u32));
-
- return nvme_trans_copy_to_user(hdr, inq_response, 0x3c);
-}
-
-static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- int alloc_len)
-{
- u8 *inq_response;
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
-
- inq_response = kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
- if (inq_response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- inq_response[1] = INQ_BDEV_CHARACTERISTICS_PAGE; /* Page Code */
- inq_response[2] = 0x00; /* Page Length MSB */
- inq_response[3] = 0x3C; /* Page Length LSB */
- inq_response[4] = 0x00; /* Medium Rotation Rate MSB */
- inq_response[5] = 0x01; /* Medium Rotation Rate LSB */
- inq_response[6] = 0x00; /* Form Factor */
-
- xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
- res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- kfree(inq_response);
- out_mem:
- return res;
-}
-
-/* LOG SENSE Helper Functions */
-
-static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- int alloc_len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
- u8 *log_response;
-
- log_response = kzalloc(LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH, GFP_KERNEL);
- if (log_response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- log_response[0] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE;
- /* Subpage=0x00, Page Length MSB=0 */
- log_response[3] = SUPPORTED_LOG_PAGES_PAGE_LENGTH;
- log_response[4] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE;
- log_response[5] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE;
- log_response[6] = LOG_PAGE_TEMPERATURE_PAGE;
-
- xfer_len = min(alloc_len, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH);
- res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
-
- kfree(log_response);
- out_mem:
- return res;
-}
-
-static int nvme_trans_log_info_exceptions(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, int alloc_len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
- u8 *log_response;
- struct nvme_command c;
- struct nvme_dev *dev = ns->dev;
- struct nvme_smart_log *smart_log;
- dma_addr_t dma_addr;
- void *mem;
- u8 temp_c;
- u16 temp_k;
-
- log_response = kzalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL);
- if (log_response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev,
- sizeof(struct nvme_smart_log),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
-
- /* Get SMART Log Page */
- memset(&c, 0, sizeof(c));
- c.common.opcode = nvme_admin_get_log_page;
- c.common.nsid = cpu_to_le32(0xFFFFFFFF);
- c.common.prp1 = cpu_to_le64(dma_addr);
- c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
- BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART);
- res = nvme_submit_admin_cmd(dev, &c, NULL);
- if (res != NVME_SC_SUCCESS) {
- temp_c = LOG_TEMP_UNKNOWN;
- } else {
- smart_log = mem;
- temp_k = (smart_log->temperature[1] << 8) +
- (smart_log->temperature[0]);
- temp_c = temp_k - KELVIN_TEMP_FACTOR;
- }
-
- log_response[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE;
- /* Subpage=0x00, Page Length MSB=0 */
- log_response[3] = REMAINING_INFO_EXCP_PAGE_LENGTH;
- /* Informational Exceptions Log Parameter 1 Start */
- /* Parameter Code=0x0000 bytes 4,5 */
- log_response[6] = 0x23; /* DU=0, TSD=1, ETC=0, TMC=0, FMT_AND_LNK=11b */
- log_response[7] = 0x04; /* PARAMETER LENGTH */
- /* Add sense Code and qualifier = 0x00 each */
- /* Use Temperature from NVMe Get Log Page, convert to C from K */
- log_response[10] = temp_c;
-
- xfer_len = min(alloc_len, LOG_INFO_EXCP_PAGE_LENGTH);
- res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
-
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log),
- mem, dma_addr);
- out_dma:
- kfree(log_response);
- out_mem:
- return res;
-}
-
-static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- int alloc_len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
- u8 *log_response;
- struct nvme_command c;
- struct nvme_dev *dev = ns->dev;
- struct nvme_smart_log *smart_log;
- dma_addr_t dma_addr;
- void *mem;
- u32 feature_resp;
- u8 temp_c_cur, temp_c_thresh;
- u16 temp_k;
-
- log_response = kzalloc(LOG_TEMP_PAGE_LENGTH, GFP_KERNEL);
- if (log_response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev,
- sizeof(struct nvme_smart_log),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
-
- /* Get SMART Log Page */
- memset(&c, 0, sizeof(c));
- c.common.opcode = nvme_admin_get_log_page;
- c.common.nsid = cpu_to_le32(0xFFFFFFFF);
- c.common.prp1 = cpu_to_le64(dma_addr);
- c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
- BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART);
- res = nvme_submit_admin_cmd(dev, &c, NULL);
- if (res != NVME_SC_SUCCESS) {
- temp_c_cur = LOG_TEMP_UNKNOWN;
- } else {
- smart_log = mem;
- temp_k = (smart_log->temperature[1] << 8) +
- (smart_log->temperature[0]);
- temp_c_cur = temp_k - KELVIN_TEMP_FACTOR;
- }
-
- /* Get Features for Temp Threshold */
- res = nvme_get_features(dev, NVME_FEAT_TEMP_THRESH, 0, 0,
- &feature_resp);
- if (res != NVME_SC_SUCCESS)
- temp_c_thresh = LOG_TEMP_UNKNOWN;
- else
- temp_c_thresh = (feature_resp & 0xFFFF) - KELVIN_TEMP_FACTOR;
-
- log_response[0] = LOG_PAGE_TEMPERATURE_PAGE;
- /* Subpage=0x00, Page Length MSB=0 */
- log_response[3] = REMAINING_TEMP_PAGE_LENGTH;
- /* Temperature Log Parameter 1 (Temperature) Start */
- /* Parameter Code = 0x0000 */
- log_response[6] = 0x01; /* Format and Linking = 01b */
- log_response[7] = 0x02; /* Parameter Length */
- /* Use Temperature from NVMe Get Log Page, convert to C from K */
- log_response[9] = temp_c_cur;
- /* Temperature Log Parameter 2 (Reference Temperature) Start */
- log_response[11] = 0x01; /* Parameter Code = 0x0001 */
- log_response[12] = 0x01; /* Format and Linking = 01b */
- log_response[13] = 0x02; /* Parameter Length */
- /* Use Temperature Thresh from NVMe Get Log Page, convert to C from K */
- log_response[15] = temp_c_thresh;
-
- xfer_len = min(alloc_len, LOG_TEMP_PAGE_LENGTH);
- res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
-
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log),
- mem, dma_addr);
- out_dma:
- kfree(log_response);
- out_mem:
- return res;
-}
-
-/* MODE SENSE Helper Functions */
-
-static int nvme_trans_fill_mode_parm_hdr(u8 *resp, int len, u8 cdb10, u8 llbaa,
- u16 mode_data_length, u16 blk_desc_len)
-{
- /* Quick check to make sure I don't stomp on my own memory... */
- if ((cdb10 && len < 8) || (!cdb10 && len < 4))
- return SNTI_INTERNAL_ERROR;
-
- if (cdb10) {
- resp[0] = (mode_data_length & 0xFF00) >> 8;
- resp[1] = (mode_data_length & 0x00FF);
- /* resp[2] and [3] are zero */
- resp[4] = llbaa;
- resp[5] = RESERVED_FIELD;
- resp[6] = (blk_desc_len & 0xFF00) >> 8;
- resp[7] = (blk_desc_len & 0x00FF);
- } else {
- resp[0] = (mode_data_length & 0x00FF);
- /* resp[1] and [2] are zero */
- resp[3] = (blk_desc_len & 0x00FF);
- }
-
- return SNTI_TRANSLATION_SUCCESS;
-}
-
-static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *resp, int len, u8 llbaa)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ns *id_ns;
- u8 flbas;
- u32 lba_length;
-
- if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN)
- return SNTI_INTERNAL_ERROR;
- else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN)
- return SNTI_INTERNAL_ERROR;
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out;
- }
-
- /* nvme ns identify */
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
- id_ns = mem;
- flbas = (id_ns->flbas) & 0x0F;
- lba_length = (1 << (id_ns->lbaf[flbas].ds));
-
- if (llbaa == 0) {
- __be32 tmp_cap = cpu_to_be32(le64_to_cpu(id_ns->ncap));
- /* Byte 4 is reserved */
- __be32 tmp_len = cpu_to_be32(lba_length & 0x00FFFFFF);
-
- memcpy(resp, &tmp_cap, sizeof(u32));
- memcpy(&resp[4], &tmp_len, sizeof(u32));
- } else {
- __be64 tmp_cap = cpu_to_be64(le64_to_cpu(id_ns->ncap));
- __be32 tmp_len = cpu_to_be32(lba_length);
-
- memcpy(resp, &tmp_cap, sizeof(u64));
- /* Bytes 8, 9, 10, 11 are reserved */
- memcpy(&resp[12], &tmp_len, sizeof(u32));
- }
-
- out_dma:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
- dma_addr);
- out:
- return res;
-}
-
-static int nvme_trans_fill_control_page(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *resp,
- int len)
-{
- if (len < MODE_PAGE_CONTROL_LEN)
- return SNTI_INTERNAL_ERROR;
-
- resp[0] = MODE_PAGE_CONTROL;
- resp[1] = MODE_PAGE_CONTROL_LEN_FIELD;
- resp[2] = 0x0E; /* TST=000b, TMF_ONLY=0, DPICZ=1,
- * D_SENSE=1, GLTSD=1, RLEC=0 */
- resp[3] = 0x12; /* Q_ALGO_MODIFIER=1h, NUAR=0, QERR=01b */
- /* Byte 4: VS=0, RAC=0, UA_INT=0, SWP=0 */
- resp[5] = 0x40; /* ATO=0, TAS=1, ATMPE=0, RWWP=0, AUTOLOAD=0 */
- /* resp[6] and [7] are obsolete, thus zero */
- resp[8] = 0xFF; /* Busy timeout period = 0xffff */
- resp[9] = 0xFF;
- /* Bytes 10,11: Extended selftest completion time = 0x0000 */
-
- return SNTI_TRANSLATION_SUCCESS;
-}
-
-static int nvme_trans_fill_caching_page(struct nvme_ns *ns,
- struct sg_io_hdr *hdr,
- u8 *resp, int len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- u32 feature_resp;
- u8 vwc;
-
- if (len < MODE_PAGE_CACHING_LEN)
- return SNTI_INTERNAL_ERROR;
-
- nvme_sc = nvme_get_features(dev, NVME_FEAT_VOLATILE_WC, 0, 0,
- &feature_resp);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out;
- if (nvme_sc) {
- res = nvme_sc;
- goto out;
- }
- vwc = feature_resp & 0x00000001;
-
- resp[0] = MODE_PAGE_CACHING;
- resp[1] = MODE_PAGE_CACHING_LEN_FIELD;
- resp[2] = vwc << 2;
-
- out:
- return res;
-}
-
-static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *resp,
- int len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
-
- if (len < MODE_PAGE_POW_CND_LEN)
- return SNTI_INTERNAL_ERROR;
-
- resp[0] = MODE_PAGE_POWER_CONDITION;
- resp[1] = MODE_PAGE_POW_CND_LEN_FIELD;
- /* All other bytes are zero */
-
- return res;
-}
-
-static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *resp,
- int len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
-
- if (len < MODE_PAGE_INF_EXC_LEN)
- return SNTI_INTERNAL_ERROR;
-
- resp[0] = MODE_PAGE_INFO_EXCEP;
- resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD;
- resp[2] = 0x88;
- /* All other bytes are zero */
-
- return res;
-}
-
-static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *resp, int len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u16 mode_pages_offset_1 = 0;
- u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4;
-
- mode_pages_offset_2 = mode_pages_offset_1 + MODE_PAGE_CACHING_LEN;
- mode_pages_offset_3 = mode_pages_offset_2 + MODE_PAGE_CONTROL_LEN;
- mode_pages_offset_4 = mode_pages_offset_3 + MODE_PAGE_POW_CND_LEN;
-
- res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1],
- MODE_PAGE_CACHING_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
- res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2],
- MODE_PAGE_CONTROL_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
- res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3],
- MODE_PAGE_POW_CND_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
- res = nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4],
- MODE_PAGE_INF_EXC_LEN);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
-
- out:
- return res;
-}
-
-static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa)
-{
- if (dbd == MODE_SENSE_BLK_DESC_ENABLED) {
- /* SPC-4: len = 8 x Num_of_descriptors if llbaa = 0, 16x if 1 */
- return 8 * (llbaa + 1) * MODE_SENSE_BLK_DESC_COUNT;
- } else {
- return 0;
- }
-}
-
-static int nvme_trans_mode_page_create(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *cmd,
- u16 alloc_len, u8 cdb10,
- int (*mode_page_fill_func)
- (struct nvme_ns *,
- struct sg_io_hdr *hdr, u8 *, int),
- u16 mode_pages_tot_len)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int xfer_len;
- u8 *response;
- u8 dbd, llbaa;
- u16 resp_size;
- int mph_size;
- u16 mode_pages_offset_1;
- u16 blk_desc_len, blk_desc_offset, mode_data_length;
-
- dbd = GET_MODE_SENSE_DBD(cmd);
- llbaa = GET_MODE_SENSE_LLBAA(cmd);
- mph_size = GET_MODE_SENSE_MPH_SIZE(cdb10);
- blk_desc_len = nvme_trans_get_blk_desc_len(dbd, llbaa);
-
- resp_size = mph_size + blk_desc_len + mode_pages_tot_len;
- /* Refer spc4r34 Table 440 for calculation of Mode data Length field */
- mode_data_length = 3 + (3 * cdb10) + blk_desc_len + mode_pages_tot_len;
-
- blk_desc_offset = mph_size;
- mode_pages_offset_1 = blk_desc_offset + blk_desc_len;
-
- response = kzalloc(resp_size, GFP_KERNEL);
- if (response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10,
- llbaa, mode_data_length, blk_desc_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out_free;
- if (blk_desc_len > 0) {
- res = nvme_trans_fill_blk_desc(ns, hdr,
- &response[blk_desc_offset],
- blk_desc_len, llbaa);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out_free;
- }
- res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1],
- mode_pages_tot_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out_free;
-
- xfer_len = min(alloc_len, resp_size);
- res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
- out_free:
- kfree(response);
- out_mem:
- return res;
-}
-
-/* Read Capacity Helper Functions */
-
-static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns,
- u8 cdb16)
-{
- u8 flbas;
- u32 lba_length;
- u64 rlba;
- u8 prot_en;
- u8 p_type_lut[4] = {0, 0, 1, 2};
- __be64 tmp_rlba;
- __be32 tmp_rlba_32;
- __be32 tmp_len;
-
- flbas = (id_ns->flbas) & 0x0F;
- lba_length = (1 << (id_ns->lbaf[flbas].ds));
- rlba = le64_to_cpup(&id_ns->nsze) - 1;
- (id_ns->dps) ? (prot_en = 0x01) : (prot_en = 0);
-
- if (!cdb16) {
- if (rlba > 0xFFFFFFFF)
- rlba = 0xFFFFFFFF;
- tmp_rlba_32 = cpu_to_be32(rlba);
- tmp_len = cpu_to_be32(lba_length);
- memcpy(response, &tmp_rlba_32, sizeof(u32));
- memcpy(&response[4], &tmp_len, sizeof(u32));
- } else {
- tmp_rlba = cpu_to_be64(rlba);
- tmp_len = cpu_to_be32(lba_length);
- memcpy(response, &tmp_rlba, sizeof(u64));
- memcpy(&response[8], &tmp_len, sizeof(u32));
- response[12] = (p_type_lut[id_ns->dps & 0x3] << 1) | prot_en;
- /* P_I_Exponent = 0x0 | LBPPBE = 0x0 */
- /* LBPME = 0 | LBPRZ = 0 | LALBA = 0x00 */
- /* Bytes 16-31 - Reserved */
- }
-}
-
-/* Start Stop Unit Helper Functions */
-
-static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 pc, u8 pcmod, u8 start)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ctrl *id_ctrl;
- int lowest_pow_st; /* max npss = lowest power consumption */
- unsigned ps_desired = 0;
-
- /* NVMe Controller Identify */
- mem = dma_alloc_coherent(&dev->pci_dev->dev,
- sizeof(struct nvme_id_ctrl),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out;
- }
- nvme_sc = nvme_identify(dev, 0, 1, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
- id_ctrl = mem;
- lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
-
- switch (pc) {
- case NVME_POWER_STATE_START_VALID:
- /* Action unspecified if POWER CONDITION MODIFIER != 0 */
- if (pcmod == 0 && start == 0x1)
- ps_desired = POWER_STATE_0;
- if (pcmod == 0 && start == 0x0)
- ps_desired = lowest_pow_st;
- break;
- case NVME_POWER_STATE_ACTIVE:
- /* Action unspecified if POWER CONDITION MODIFIER != 0 */
- if (pcmod == 0)
- ps_desired = POWER_STATE_0;
- break;
- case NVME_POWER_STATE_IDLE:
- /* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */
- if (pcmod == 0x0)
- ps_desired = POWER_STATE_1;
- else if (pcmod == 0x1)
- ps_desired = POWER_STATE_2;
- else if (pcmod == 0x2)
- ps_desired = POWER_STATE_3;
- break;
- case NVME_POWER_STATE_STANDBY:
- /* Action unspecified if POWER CONDITION MODIFIER != [0,1] */
- if (pcmod == 0x0)
- ps_desired = max(POWER_STATE_0, (lowest_pow_st - 2));
- else if (pcmod == 0x1)
- ps_desired = max(POWER_STATE_0, (lowest_pow_st - 1));
- break;
- case NVME_POWER_STATE_LU_CONTROL:
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
- nvme_sc = nvme_set_features(dev, NVME_FEAT_POWER_MGMT, ps_desired, 0,
- NULL);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc)
- res = nvme_sc;
- out_dma:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem,
- dma_addr);
- out:
- return res;
-}
-
-/* Write Buffer Helper Functions */
-/* Also using this for Format Unit with hdr passed as NULL, and buffer_id, 0 */
-
-static int nvme_trans_send_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 opcode, u32 tot_len, u32 offset,
- u8 buffer_id)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- struct nvme_command c;
- struct nvme_iod *iod = NULL;
- unsigned length;
-
- memset(&c, 0, sizeof(c));
- c.common.opcode = opcode;
- if (opcode == nvme_admin_download_fw) {
- if (hdr->iovec_count > 0) {
- /* Assuming SGL is not allowed for this command */
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST,
- SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
- iod = nvme_map_user_pages(dev, DMA_TO_DEVICE,
- (unsigned long)hdr->dxferp, tot_len);
- if (IS_ERR(iod)) {
- res = PTR_ERR(iod);
- goto out;
- }
- length = nvme_setup_prps(dev, iod, tot_len, GFP_KERNEL);
- if (length != tot_len) {
- res = -ENOMEM;
- goto out_unmap;
- }
-
- c.dlfw.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
- c.dlfw.prp2 = cpu_to_le64(iod->first_dma);
- c.dlfw.numd = cpu_to_le32((tot_len/BYTES_TO_DWORDS) - 1);
- c.dlfw.offset = cpu_to_le32(offset/BYTES_TO_DWORDS);
- } else if (opcode == nvme_admin_activate_fw) {
- u32 cdw10 = buffer_id | NVME_FWACT_REPL_ACTV;
- c.common.cdw10[0] = cpu_to_le32(cdw10);
- }
-
- nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_unmap;
- if (nvme_sc)
- res = nvme_sc;
-
- out_unmap:
- if (opcode == nvme_admin_download_fw) {
- nvme_unmap_user_pages(dev, DMA_TO_DEVICE, iod);
- nvme_free_iod(dev, iod);
- }
- out:
- return res;
-}
-
-/* Mode Select Helper Functions */
-
-static inline void nvme_trans_modesel_get_bd_len(u8 *parm_list, u8 cdb10,
- u16 *bd_len, u8 *llbaa)
-{
- if (cdb10) {
- /* 10 Byte CDB */
- *bd_len = (parm_list[MODE_SELECT_10_BD_OFFSET] << 8) +
- parm_list[MODE_SELECT_10_BD_OFFSET + 1];
- *llbaa = parm_list[MODE_SELECT_10_LLBAA_OFFSET] &
- MODE_SELECT_10_LLBAA_MASK;
- } else {
- /* 6 Byte CDB */
- *bd_len = parm_list[MODE_SELECT_6_BD_OFFSET];
- }
-}
-
-static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list,
- u16 idx, u16 bd_len, u8 llbaa)
-{
- u16 bd_num;
-
- bd_num = bd_len / ((llbaa == 0) ?
- SHORT_DESC_BLOCK : LONG_DESC_BLOCK);
- /* Store block descriptor info if a FORMAT UNIT comes later */
- /* TODO Saving 1st BD info; what to do if multiple BD received? */
- if (llbaa == 0) {
- /* Standard Block Descriptor - spc4r34 7.5.5.1 */
- ns->mode_select_num_blocks =
- (parm_list[idx + 1] << 16) +
- (parm_list[idx + 2] << 8) +
- (parm_list[idx + 3]);
-
- ns->mode_select_block_len =
- (parm_list[idx + 5] << 16) +
- (parm_list[idx + 6] << 8) +
- (parm_list[idx + 7]);
- } else {
- /* Long LBA Block Descriptor - sbc3r27 6.4.2.3 */
- ns->mode_select_num_blocks =
- (((u64)parm_list[idx + 0]) << 56) +
- (((u64)parm_list[idx + 1]) << 48) +
- (((u64)parm_list[idx + 2]) << 40) +
- (((u64)parm_list[idx + 3]) << 32) +
- (((u64)parm_list[idx + 4]) << 24) +
- (((u64)parm_list[idx + 5]) << 16) +
- (((u64)parm_list[idx + 6]) << 8) +
- ((u64)parm_list[idx + 7]);
-
- ns->mode_select_block_len =
- (parm_list[idx + 12] << 24) +
- (parm_list[idx + 13] << 16) +
- (parm_list[idx + 14] << 8) +
- (parm_list[idx + 15]);
- }
-}
-
-static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *mode_page, u8 page_code)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- unsigned dword11;
-
- switch (page_code) {
- case MODE_PAGE_CACHING:
- dword11 = ((mode_page[2] & CACHING_MODE_PAGE_WCE_MASK) ? 1 : 0);
- nvme_sc = nvme_set_features(dev, NVME_FEAT_VOLATILE_WC, dword11,
- 0, NULL);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- break;
- if (nvme_sc) {
- res = nvme_sc;
- break;
- }
- break;
- case MODE_PAGE_CONTROL:
- break;
- case MODE_PAGE_POWER_CONDITION:
- /* Verify the OS is not trying to set timers */
- if ((mode_page[2] & 0x01) != 0 || (mode_page[3] & 0x0F) != 0) {
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST,
- SCSI_ASC_INVALID_PARAMETER,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- if (!res)
- res = SNTI_INTERNAL_ERROR;
- break;
- }
- break;
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- if (!res)
- res = SNTI_INTERNAL_ERROR;
- break;
- }
-
- return res;
-}
-
-static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd, u16 parm_list_len, u8 pf,
- u8 sp, u8 cdb10)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 *parm_list;
- u16 bd_len;
- u8 llbaa = 0;
- u16 index, saved_index;
- u8 page_code;
- u16 mp_size;
-
- /* Get parm list from data-in/out buffer */
- parm_list = kmalloc(parm_list_len, GFP_KERNEL);
- if (parm_list == NULL) {
- res = -ENOMEM;
- goto out;
- }
-
- res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out_mem;
-
- nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa);
- index = (cdb10) ? (MODE_SELECT_10_MPH_SIZE) : (MODE_SELECT_6_MPH_SIZE);
-
- if (bd_len != 0) {
- /* Block Descriptors present, parse */
- nvme_trans_modesel_save_bd(ns, parm_list, index, bd_len, llbaa);
- index += bd_len;
- }
- saved_index = index;
-
- /* Multiple mode pages may be present; iterate through all */
- /* In 1st Iteration, don't do NVME Command, only check for CDB errors */
- do {
- page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK;
- mp_size = parm_list[index + 1] + 2;
- if ((page_code != MODE_PAGE_CACHING) &&
- (page_code != MODE_PAGE_CONTROL) &&
- (page_code != MODE_PAGE_POWER_CONDITION)) {
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST,
- SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out_mem;
- }
- index += mp_size;
- } while (index < parm_list_len);
-
- /* In 2nd Iteration, do the NVME Commands */
- index = saved_index;
- do {
- page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK;
- mp_size = parm_list[index + 1] + 2;
- res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index],
- page_code);
- if (res != SNTI_TRANSLATION_SUCCESS)
- break;
- index += mp_size;
- } while (index < parm_list_len);
-
- out_mem:
- kfree(parm_list);
- out:
- return res;
-}
-
-/* Format Unit Helper Functions */
-
-static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns,
- struct sg_io_hdr *hdr)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ns *id_ns;
- u8 flbas;
-
- /*
- * SCSI Expects a MODE SELECT would have been issued prior to
- * a FORMAT UNIT, and the block size and number would be used
- * from the block descriptor in it. If a MODE SELECT had not
- * been issued, FORMAT shall use the current values for both.
- */
-
- if (ns->mode_select_num_blocks == 0 || ns->mode_select_block_len == 0) {
- mem = dma_alloc_coherent(&dev->pci_dev->dev,
- sizeof(struct nvme_id_ns), &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out;
- }
- /* nvme ns identify */
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
- id_ns = mem;
-
- if (ns->mode_select_num_blocks == 0)
- ns->mode_select_num_blocks = le64_to_cpu(id_ns->ncap);
- if (ns->mode_select_block_len == 0) {
- flbas = (id_ns->flbas) & 0x0F;
- ns->mode_select_block_len =
- (1 << (id_ns->lbaf[flbas].ds));
- }
- out_dma:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- mem, dma_addr);
- }
- out:
- return res;
-}
-
-static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len,
- u8 format_prot_info, u8 *nvme_pf_code)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 *parm_list;
- u8 pf_usage, pf_code;
-
- parm_list = kmalloc(len, GFP_KERNEL);
- if (parm_list == NULL) {
- res = -ENOMEM;
- goto out;
- }
- res = nvme_trans_copy_from_user(hdr, parm_list, len);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out_mem;
-
- if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] &
- FORMAT_UNIT_IMMED_MASK) != 0) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out_mem;
- }
-
- if (len == FORMAT_UNIT_LONG_PARM_LIST_LEN &&
- (parm_list[FORMAT_UNIT_PROT_INT_OFFSET] & 0x0F) != 0) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out_mem;
- }
- pf_usage = parm_list[FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET] &
- FORMAT_UNIT_PROT_FIELD_USAGE_MASK;
- pf_code = (pf_usage << 2) | format_prot_info;
- switch (pf_code) {
- case 0:
- *nvme_pf_code = 0;
- break;
- case 2:
- *nvme_pf_code = 1;
- break;
- case 3:
- *nvme_pf_code = 2;
- break;
- case 7:
- *nvme_pf_code = 3;
- break;
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
-
- out_mem:
- kfree(parm_list);
- out:
- return res;
-}
-
-static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 prot_info)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ns *id_ns;
- u8 i;
- u8 flbas, nlbaf;
- u8 selected_lbaf = 0xFF;
- u32 cdw10 = 0;
- struct nvme_command c;
-
- /* Loop thru LBAF's in id_ns to match reqd lbaf, put in cdw10 */
- mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out;
- }
- /* nvme ns identify */
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
- id_ns = mem;
- flbas = (id_ns->flbas) & 0x0F;
- nlbaf = id_ns->nlbaf;
-
- for (i = 0; i < nlbaf; i++) {
- if (ns->mode_select_block_len == (1 << (id_ns->lbaf[i].ds))) {
- selected_lbaf = i;
- break;
- }
- }
- if (selected_lbaf > 0x0F) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- }
- if (ns->mode_select_num_blocks != le64_to_cpu(id_ns->ncap)) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- }
-
- cdw10 |= prot_info << 5;
- cdw10 |= selected_lbaf & 0x0F;
- memset(&c, 0, sizeof(c));
- c.format.opcode = nvme_admin_format_nvm;
- c.format.nsid = cpu_to_le32(ns->ns_id);
- c.format.cdw10 = cpu_to_le32(cdw10);
-
- nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc)
- res = nvme_sc;
-
- out_dma:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
- dma_addr);
- out:
- return res;
-}
-
-/* Read/Write Helper Functions */
-
-static inline void nvme_trans_get_io_cdb6(u8 *cmd,
- struct nvme_trans_io_cdb *cdb_info)
-{
- cdb_info->fua = 0;
- cdb_info->prot_info = 0;
- cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_6_CDB_LBA_OFFSET) &
- IO_6_CDB_LBA_MASK;
- cdb_info->xfer_len = GET_U8_FROM_CDB(cmd, IO_6_CDB_TX_LEN_OFFSET);
-
- /* sbc3r27 sec 5.32 - TRANSFER LEN of 0 implies a 256 Block transfer */
- if (cdb_info->xfer_len == 0)
- cdb_info->xfer_len = IO_6_DEFAULT_TX_LEN;
-}
-
-static inline void nvme_trans_get_io_cdb10(u8 *cmd,
- struct nvme_trans_io_cdb *cdb_info)
-{
- cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_10_CDB_FUA_OFFSET) &
- IO_CDB_FUA_MASK;
- cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_10_CDB_WP_OFFSET) &
- IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT;
- cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_10_CDB_LBA_OFFSET);
- cdb_info->xfer_len = GET_U16_FROM_CDB(cmd, IO_10_CDB_TX_LEN_OFFSET);
-}
-
-static inline void nvme_trans_get_io_cdb12(u8 *cmd,
- struct nvme_trans_io_cdb *cdb_info)
-{
- cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_12_CDB_FUA_OFFSET) &
- IO_CDB_FUA_MASK;
- cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_12_CDB_WP_OFFSET) &
- IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT;
- cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_12_CDB_LBA_OFFSET);
- cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_12_CDB_TX_LEN_OFFSET);
-}
-
-static inline void nvme_trans_get_io_cdb16(u8 *cmd,
- struct nvme_trans_io_cdb *cdb_info)
-{
- cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_16_CDB_FUA_OFFSET) &
- IO_CDB_FUA_MASK;
- cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_16_CDB_WP_OFFSET) &
- IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT;
- cdb_info->lba = GET_U64_FROM_CDB(cmd, IO_16_CDB_LBA_OFFSET);
- cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_16_CDB_TX_LEN_OFFSET);
-}
-
-static inline u32 nvme_trans_io_get_num_cmds(struct sg_io_hdr *hdr,
- struct nvme_trans_io_cdb *cdb_info,
- u32 max_blocks)
-{
- /* If using iovecs, send one nvme command per vector */
- if (hdr->iovec_count > 0)
- return hdr->iovec_count;
- else if (cdb_info->xfer_len > max_blocks)
- return ((cdb_info->xfer_len - 1) / max_blocks) + 1;
- else
- return 1;
-}
-
-static u16 nvme_trans_io_get_control(struct nvme_ns *ns,
- struct nvme_trans_io_cdb *cdb_info)
-{
- u16 control = 0;
-
- /* When Protection information support is added, implement here */
-
- if (cdb_info->fua > 0)
- control |= NVME_RW_FUA;
-
- return control;
-}
-
-static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- struct nvme_trans_io_cdb *cdb_info, u8 is_write)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_dev *dev = ns->dev;
- u32 num_cmds;
- struct nvme_iod *iod;
- u64 unit_len;
- u64 unit_num_blocks; /* Number of blocks to xfer in each nvme cmd */
- u32 retcode;
- u32 i = 0;
- u64 nvme_offset = 0;
- void __user *next_mapping_addr;
- struct nvme_command c;
- u8 opcode = (is_write ? nvme_cmd_write : nvme_cmd_read);
- u16 control;
- u32 max_blocks = queue_max_hw_sectors(ns->queue);
-
- num_cmds = nvme_trans_io_get_num_cmds(hdr, cdb_info, max_blocks);
-
- /*
- * This loop handles two cases.
- * First, when an SGL is used in the form of an iovec list:
- * - Use iov_base as the next mapping address for the nvme command_id
- * - Use iov_len as the data transfer length for the command.
- * Second, when we have a single buffer
- * - If larger than max_blocks, split into chunks, offset
- * each nvme command accordingly.
- */
- for (i = 0; i < num_cmds; i++) {
- memset(&c, 0, sizeof(c));
- if (hdr->iovec_count > 0) {
- struct sg_iovec sgl;
-
- retcode = copy_from_user(&sgl, hdr->dxferp +
- i * sizeof(struct sg_iovec),
- sizeof(struct sg_iovec));
- if (retcode)
- return -EFAULT;
- unit_len = sgl.iov_len;
- unit_num_blocks = unit_len >> ns->lba_shift;
- next_mapping_addr = sgl.iov_base;
- } else {
- unit_num_blocks = min((u64)max_blocks,
- (cdb_info->xfer_len - nvme_offset));
- unit_len = unit_num_blocks << ns->lba_shift;
- next_mapping_addr = hdr->dxferp +
- ((1 << ns->lba_shift) * nvme_offset);
- }
-
- c.rw.opcode = opcode;
- c.rw.nsid = cpu_to_le32(ns->ns_id);
- c.rw.slba = cpu_to_le64(cdb_info->lba + nvme_offset);
- c.rw.length = cpu_to_le16(unit_num_blocks - 1);
- control = nvme_trans_io_get_control(ns, cdb_info);
- c.rw.control = cpu_to_le16(control);
-
- iod = nvme_map_user_pages(dev,
- (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
- (unsigned long)next_mapping_addr, unit_len);
- if (IS_ERR(iod)) {
- res = PTR_ERR(iod);
- goto out;
- }
- retcode = nvme_setup_prps(dev, iod, unit_len, GFP_KERNEL);
- if (retcode != unit_len) {
- nvme_unmap_user_pages(dev,
- (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
- iod);
- nvme_free_iod(dev, iod);
- res = -ENOMEM;
- goto out;
- }
- c.rw.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
- c.rw.prp2 = cpu_to_le64(iod->first_dma);
-
- nvme_offset += unit_num_blocks;
-
- nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL);
- if (nvme_sc != NVME_SC_SUCCESS) {
- nvme_unmap_user_pages(dev,
- (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
- iod);
- nvme_free_iod(dev, iod);
- res = nvme_trans_status_code(hdr, nvme_sc);
- goto out;
- }
- nvme_unmap_user_pages(dev,
- (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
- iod);
- nvme_free_iod(dev, iod);
- }
- res = nvme_trans_status_code(hdr, NVME_SC_SUCCESS);
-
- out:
- return res;
-}
-
-
-/* SCSI Command Translation Functions */
-
-static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- struct nvme_trans_io_cdb cdb_info;
- u8 opcode = cmd[0];
- u64 xfer_bytes;
- u64 sum_iov_len = 0;
- struct sg_iovec sgl;
- int i;
- size_t not_copied;
-
- /* Extract Fields from CDB */
- switch (opcode) {
- case WRITE_6:
- case READ_6:
- nvme_trans_get_io_cdb6(cmd, &cdb_info);
- break;
- case WRITE_10:
- case READ_10:
- nvme_trans_get_io_cdb10(cmd, &cdb_info);
- break;
- case WRITE_12:
- case READ_12:
- nvme_trans_get_io_cdb12(cmd, &cdb_info);
- break;
- case WRITE_16:
- case READ_16:
- nvme_trans_get_io_cdb16(cmd, &cdb_info);
- break;
- default:
- /* Will never really reach here */
- res = SNTI_INTERNAL_ERROR;
- goto out;
- }
-
- /* Calculate total length of transfer (in bytes) */
- if (hdr->iovec_count > 0) {
- for (i = 0; i < hdr->iovec_count; i++) {
- not_copied = copy_from_user(&sgl, hdr->dxferp +
- i * sizeof(struct sg_iovec),
- sizeof(struct sg_iovec));
- if (not_copied)
- return -EFAULT;
- sum_iov_len += sgl.iov_len;
- /* IO vector sizes should be multiples of block size */
- if (sgl.iov_len % (1 << ns->lba_shift) != 0) {
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST,
- SCSI_ASC_INVALID_PARAMETER,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
- }
- } else {
- sum_iov_len = hdr->dxfer_len;
- }
-
- /* As Per sg ioctl howto, if the lengths differ, use the lower one */
- xfer_bytes = min(((u64)hdr->dxfer_len), sum_iov_len);
-
- /* If block count and actual data buffer size dont match, error out */
- if (xfer_bytes != (cdb_info.xfer_len << ns->lba_shift)) {
- res = -EINVAL;
- goto out;
- }
-
- /* Check for 0 length transfer - it is not illegal */
- if (cdb_info.xfer_len == 0)
- goto out;
-
- /* Send NVMe IO Command(s) */
- res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
-
- out:
- return res;
-}
-
-static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 evpd;
- u8 page_code;
- int alloc_len;
- u8 *inq_response;
-
- evpd = GET_INQ_EVPD_BIT(cmd);
- page_code = GET_INQ_PAGE_CODE(cmd);
- alloc_len = GET_INQ_ALLOC_LENGTH(cmd);
-
- inq_response = kmalloc(max(alloc_len, STANDARD_INQUIRY_LENGTH),
- GFP_KERNEL);
- if (inq_response == NULL) {
- res = -ENOMEM;
- goto out_mem;
- }
-
- if (evpd == 0) {
- if (page_code == INQ_STANDARD_INQUIRY_PAGE) {
- res = nvme_trans_standard_inquiry_page(ns, hdr,
- inq_response, alloc_len);
- } else {
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST,
- SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- }
- } else {
- switch (page_code) {
- case VPD_SUPPORTED_PAGES:
- res = nvme_trans_supported_vpd_pages(ns, hdr,
- inq_response, alloc_len);
- break;
- case VPD_SERIAL_NUMBER:
- res = nvme_trans_unit_serial_page(ns, hdr, inq_response,
- alloc_len);
- break;
- case VPD_DEVICE_IDENTIFIERS:
- res = nvme_trans_device_id_page(ns, hdr, inq_response,
- alloc_len);
- break;
- case VPD_EXTENDED_INQUIRY:
- res = nvme_trans_ext_inq_page(ns, hdr, alloc_len);
- break;
- case VPD_BLOCK_LIMITS:
- res = nvme_trans_bdev_limits_page(ns, hdr, inq_response,
- alloc_len);
- break;
- case VPD_BLOCK_DEV_CHARACTERISTICS:
- res = nvme_trans_bdev_char_page(ns, hdr, alloc_len);
- break;
- default:
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST,
- SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
- }
- kfree(inq_response);
- out_mem:
- return res;
-}
-
-static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u16 alloc_len;
- u8 sp;
- u8 pc;
- u8 page_code;
-
- sp = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_SP_OFFSET);
- if (sp != LOG_SENSE_CDB_SP_NOT_ENABLED) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
- pc = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_PC_OFFSET);
- page_code = pc & LOG_SENSE_CDB_PAGE_CODE_MASK;
- pc = (pc & LOG_SENSE_CDB_PC_MASK) >> LOG_SENSE_CDB_PC_SHIFT;
- if (pc != LOG_SENSE_CDB_PC_CUMULATIVE_VALUES) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
- alloc_len = GET_U16_FROM_CDB(cmd, LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET);
- switch (page_code) {
- case LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE:
- res = nvme_trans_log_supp_pages(ns, hdr, alloc_len);
- break;
- case LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE:
- res = nvme_trans_log_info_exceptions(ns, hdr, alloc_len);
- break;
- case LOG_PAGE_TEMPERATURE_PAGE:
- res = nvme_trans_log_temperature(ns, hdr, alloc_len);
- break;
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
-
- out:
- return res;
-}
-
-static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 cdb10 = 0;
- u16 parm_list_len;
- u8 page_format;
- u8 save_pages;
-
- page_format = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_PAGE_FORMAT_OFFSET);
- page_format &= MODE_SELECT_CDB_PAGE_FORMAT_MASK;
-
- save_pages = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_SAVE_PAGES_OFFSET);
- save_pages &= MODE_SELECT_CDB_SAVE_PAGES_MASK;
-
- if (GET_OPCODE(cmd) == MODE_SELECT) {
- parm_list_len = GET_U8_FROM_CDB(cmd,
- MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET);
- } else {
- parm_list_len = GET_U16_FROM_CDB(cmd,
- MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET);
- cdb10 = 1;
- }
-
- if (parm_list_len != 0) {
- /*
- * According to SPC-4 r24, a paramter list length field of 0
- * shall not be considered an error
- */
- res = nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len,
- page_format, save_pages, cdb10);
- }
-
- return res;
-}
-
-static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u16 alloc_len;
- u8 cdb10 = 0;
- u8 page_code;
- u8 pc;
-
- if (GET_OPCODE(cmd) == MODE_SENSE) {
- alloc_len = GET_U8_FROM_CDB(cmd, MODE_SENSE6_ALLOC_LEN_OFFSET);
- } else {
- alloc_len = GET_U16_FROM_CDB(cmd,
- MODE_SENSE10_ALLOC_LEN_OFFSET);
- cdb10 = 1;
- }
-
- pc = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CONTROL_OFFSET) &
- MODE_SENSE_PAGE_CONTROL_MASK;
- if (pc != MODE_SENSE_PC_CURRENT_VALUES) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
-
- page_code = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CODE_OFFSET) &
- MODE_SENSE_PAGE_CODE_MASK;
- switch (page_code) {
- case MODE_PAGE_CACHING:
- res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
- cdb10,
- &nvme_trans_fill_caching_page,
- MODE_PAGE_CACHING_LEN);
- break;
- case MODE_PAGE_CONTROL:
- res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
- cdb10,
- &nvme_trans_fill_control_page,
- MODE_PAGE_CONTROL_LEN);
- break;
- case MODE_PAGE_POWER_CONDITION:
- res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
- cdb10,
- &nvme_trans_fill_pow_cnd_page,
- MODE_PAGE_POW_CND_LEN);
- break;
- case MODE_PAGE_INFO_EXCEP:
- res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
- cdb10,
- &nvme_trans_fill_inf_exc_page,
- MODE_PAGE_INF_EXC_LEN);
- break;
- case MODE_PAGE_RETURN_ALL:
- res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
- cdb10,
- &nvme_trans_fill_all_pages,
- MODE_PAGE_ALL_LEN);
- break;
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
-
- out:
- return res;
-}
-
-static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- u32 alloc_len = READ_CAP_10_RESP_SIZE;
- u32 resp_size = READ_CAP_10_RESP_SIZE;
- u32 xfer_len;
- u8 cdb16;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ns *id_ns;
- u8 *response;
-
- cdb16 = IS_READ_CAP_16(cmd);
- if (cdb16) {
- alloc_len = GET_READ_CAP_16_ALLOC_LENGTH(cmd);
- resp_size = READ_CAP_16_RESP_SIZE;
- }
-
- mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out;
- }
- /* nvme ns identify */
- nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
- id_ns = mem;
-
- response = kzalloc(resp_size, GFP_KERNEL);
- if (response == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
- nvme_trans_fill_read_cap(response, id_ns, cdb16);
-
- xfer_len = min(alloc_len, resp_size);
- res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
- kfree(response);
- out_dma:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
- dma_addr);
- out:
- return res;
-}
-
-static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- u32 alloc_len, xfer_len, resp_size;
- u8 select_report;
- u8 *response;
- struct nvme_dev *dev = ns->dev;
- dma_addr_t dma_addr;
- void *mem;
- struct nvme_id_ctrl *id_ctrl;
- u32 ll_length, lun_id;
- u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET;
- __be32 tmp_len;
-
- alloc_len = GET_REPORT_LUNS_ALLOC_LENGTH(cmd);
- select_report = GET_U8_FROM_CDB(cmd, REPORT_LUNS_SR_OFFSET);
-
- if ((select_report != ALL_LUNS_RETURNED) &&
- (select_report != ALL_WELL_KNOWN_LUNS_RETURNED) &&
- (select_report != RESTRICTED_LUNS_RETURNED)) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- } else {
- /* NVMe Controller Identify */
- mem = dma_alloc_coherent(&dev->pci_dev->dev,
- sizeof(struct nvme_id_ctrl),
- &dma_addr, GFP_KERNEL);
- if (mem == NULL) {
- res = -ENOMEM;
- goto out;
- }
- nvme_sc = nvme_identify(dev, 0, 1, dma_addr);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out_dma;
- if (nvme_sc) {
- res = nvme_sc;
- goto out_dma;
- }
- id_ctrl = mem;
- ll_length = le32_to_cpu(id_ctrl->nn) * LUN_ENTRY_SIZE;
- resp_size = ll_length + LUN_DATA_HEADER_SIZE;
-
- if (alloc_len < resp_size) {
- res = nvme_trans_completion(hdr,
- SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out_dma;
- }
-
- response = kzalloc(resp_size, GFP_KERNEL);
- if (response == NULL) {
- res = -ENOMEM;
- goto out_dma;
- }
-
- /* The first LUN ID will always be 0 per the SAM spec */
- for (lun_id = 0; lun_id < le32_to_cpu(id_ctrl->nn); lun_id++) {
- /*
- * Set the LUN Id and then increment to the next LUN
- * location in the parameter data.
- */
- __be64 tmp_id = cpu_to_be64(lun_id);
- memcpy(&response[lun_id_offset], &tmp_id, sizeof(u64));
- lun_id_offset += LUN_ENTRY_SIZE;
- }
- tmp_len = cpu_to_be32(ll_length);
- memcpy(response, &tmp_len, sizeof(u32));
- }
-
- xfer_len = min(alloc_len, resp_size);
- res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
- kfree(response);
- out_dma:
- dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem,
- dma_addr);
- out:
- return res;
-}
-
-static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 alloc_len, xfer_len, resp_size;
- u8 desc_format;
- u8 *response;
-
- alloc_len = GET_REQUEST_SENSE_ALLOC_LENGTH(cmd);
- desc_format = GET_U8_FROM_CDB(cmd, REQUEST_SENSE_DESC_OFFSET);
- desc_format &= REQUEST_SENSE_DESC_MASK;
-
- resp_size = ((desc_format) ? (DESC_FMT_SENSE_DATA_SIZE) :
- (FIXED_FMT_SENSE_DATA_SIZE));
- response = kzalloc(resp_size, GFP_KERNEL);
- if (response == NULL) {
- res = -ENOMEM;
- goto out;
- }
-
- if (desc_format == DESCRIPTOR_FORMAT_SENSE_DATA_TYPE) {
- /* Descriptor Format Sense Data */
- response[0] = DESC_FORMAT_SENSE_DATA;
- response[1] = NO_SENSE;
- /* TODO How is LOW POWER CONDITION ON handled? (byte 2) */
- response[2] = SCSI_ASC_NO_SENSE;
- response[3] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- /* SDAT_OVFL = 0 | Additional Sense Length = 0 */
- } else {
- /* Fixed Format Sense Data */
- response[0] = FIXED_SENSE_DATA;
- /* Byte 1 = Obsolete */
- response[2] = NO_SENSE; /* FM, EOM, ILI, SDAT_OVFL = 0 */
- /* Bytes 3-6 - Information - set to zero */
- response[7] = FIXED_SENSE_DATA_ADD_LENGTH;
- /* Bytes 8-11 - Cmd Specific Information - set to zero */
- response[12] = SCSI_ASC_NO_SENSE;
- response[13] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
- /* Byte 14 = Field Replaceable Unit Code = 0 */
- /* Bytes 15-17 - SKSV=0; Sense Key Specific = 0 */
- }
-
- xfer_len = min(alloc_len, resp_size);
- res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
- kfree(response);
- out:
- return res;
-}
-
-static int nvme_trans_security_protocol(struct nvme_ns *ns,
- struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-}
-
-static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_command c;
- u8 immed, pcmod, pc, no_flush, start;
-
- immed = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_IMMED_OFFSET);
- pcmod = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET);
- pc = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_OFFSET);
- no_flush = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_NO_FLUSH_OFFSET);
- start = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_START_OFFSET);
-
- immed &= START_STOP_UNIT_CDB_IMMED_MASK;
- pcmod &= START_STOP_UNIT_CDB_POWER_COND_MOD_MASK;
- pc = (pc & START_STOP_UNIT_CDB_POWER_COND_MASK) >> NIBBLE_SHIFT;
- no_flush &= START_STOP_UNIT_CDB_NO_FLUSH_MASK;
- start &= START_STOP_UNIT_CDB_START_MASK;
-
- if (immed != 0) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- } else {
- if (no_flush == 0) {
- /* Issue NVME FLUSH command prior to START STOP UNIT */
- memset(&c, 0, sizeof(c));
- c.common.opcode = nvme_cmd_flush;
- c.common.nsid = cpu_to_le32(ns->ns_id);
-
- nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out;
- if (nvme_sc) {
- res = nvme_sc;
- goto out;
- }
- }
- /* Setup the expected power state transition */
- res = nvme_trans_power_state(ns, hdr, pc, pcmod, start);
- }
-
- out:
- return res;
-}
-
-static int nvme_trans_synchronize_cache(struct nvme_ns *ns,
- struct sg_io_hdr *hdr, u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- int nvme_sc;
- struct nvme_command c;
-
- memset(&c, 0, sizeof(c));
- c.common.opcode = nvme_cmd_flush;
- c.common.nsid = cpu_to_le32(ns->ns_id);
-
- nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL);
-
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- goto out;
- if (nvme_sc)
- res = nvme_sc;
-
- out:
- return res;
-}
-
-static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u8 parm_hdr_len = 0;
- u8 nvme_pf_code = 0;
- u8 format_prot_info, long_list, format_data;
-
- format_prot_info = GET_U8_FROM_CDB(cmd,
- FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET);
- long_list = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_LONG_LIST_OFFSET);
- format_data = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET);
-
- format_prot_info = (format_prot_info &
- FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK) >>
- FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT;
- long_list &= FORMAT_UNIT_CDB_LONG_LIST_MASK;
- format_data &= FORMAT_UNIT_CDB_FORMAT_DATA_MASK;
-
- if (format_data != 0) {
- if (format_prot_info != 0) {
- if (long_list == 0)
- parm_hdr_len = FORMAT_UNIT_SHORT_PARM_LIST_LEN;
- else
- parm_hdr_len = FORMAT_UNIT_LONG_PARM_LIST_LEN;
- }
- } else if (format_data == 0 && format_prot_info != 0) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
-
- /* Get parm header from data-in/out buffer */
- /*
- * According to the translation spec, the only fields in the parameter
- * list we are concerned with are in the header. So allocate only that.
- */
- if (parm_hdr_len > 0) {
- res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len,
- format_prot_info, &nvme_pf_code);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
- }
-
- /* Attempt to activate any previously downloaded firmware image */
- res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, 0, 0, 0);
-
- /* Determine Block size and count and send format command */
- res = nvme_trans_fmt_set_blk_size_count(ns, hdr);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
-
- res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code);
-
- out:
- return res;
-}
-
-static int nvme_trans_test_unit_ready(struct nvme_ns *ns,
- struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- struct nvme_dev *dev = ns->dev;
-
- if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY))
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- NOT_READY, SCSI_ASC_LUN_NOT_READY,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- else
- res = nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0);
-
- return res;
-}
-
-static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- int res = SNTI_TRANSLATION_SUCCESS;
- u32 buffer_offset, parm_list_length;
- u8 buffer_id, mode;
-
- parm_list_length =
- GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET);
- if (parm_list_length % BYTES_TO_DWORDS != 0) {
- /* NVMe expects Firmware file to be a whole number of DWORDS */
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
- buffer_id = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_ID_OFFSET);
- if (buffer_id > NVME_MAX_FIRMWARE_SLOT) {
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- goto out;
- }
- mode = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_MODE_OFFSET) &
- WRITE_BUFFER_CDB_MODE_MASK;
- buffer_offset =
- GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET);
-
- switch (mode) {
- case DOWNLOAD_SAVE_ACTIVATE:
- res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw,
- parm_list_length, buffer_offset,
- buffer_id);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
- res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw,
- parm_list_length, buffer_offset,
- buffer_id);
- break;
- case DOWNLOAD_SAVE_DEFER_ACTIVATE:
- res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw,
- parm_list_length, buffer_offset,
- buffer_id);
- break;
- case ACTIVATE_DEFERRED_MICROCODE:
- res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw,
- parm_list_length, buffer_offset,
- buffer_id);
- break;
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
-
- out:
- return res;
-}
-
-struct scsi_unmap_blk_desc {
- __be64 slba;
- __be32 nlb;
- u32 resv;
-};
-
-struct scsi_unmap_parm_list {
- __be16 unmap_data_len;
- __be16 unmap_blk_desc_data_len;
- u32 resv;
- struct scsi_unmap_blk_desc desc[0];
-};
-
-static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 *cmd)
-{
- struct nvme_dev *dev = ns->dev;
- struct scsi_unmap_parm_list *plist;
- struct nvme_dsm_range *range;
- struct nvme_command c;
- int i, nvme_sc, res = -ENOMEM;
- u16 ndesc, list_len;
- dma_addr_t dma_addr;
-
- list_len = GET_U16_FROM_CDB(cmd, UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET);
- if (!list_len)
- return -EINVAL;
-
- plist = kmalloc(list_len, GFP_KERNEL);
- if (!plist)
- return -ENOMEM;
-
- res = nvme_trans_copy_from_user(hdr, plist, list_len);
- if (res != SNTI_TRANSLATION_SUCCESS)
- goto out;
-
- ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4;
- if (!ndesc || ndesc > 256) {
- res = -EINVAL;
- goto out;
- }
-
- range = dma_alloc_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range),
- &dma_addr, GFP_KERNEL);
- if (!range)
- goto out;
-
- for (i = 0; i < ndesc; i++) {
- range[i].nlb = cpu_to_le32(be32_to_cpu(plist->desc[i].nlb));
- range[i].slba = cpu_to_le64(be64_to_cpu(plist->desc[i].slba));
- range[i].cattr = 0;
- }
-
- memset(&c, 0, sizeof(c));
- c.dsm.opcode = nvme_cmd_dsm;
- c.dsm.nsid = cpu_to_le32(ns->ns_id);
- c.dsm.prp1 = cpu_to_le64(dma_addr);
- c.dsm.nr = cpu_to_le32(ndesc - 1);
- c.dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);
-
- nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL);
- res = nvme_trans_status_code(hdr, nvme_sc);
-
- dma_free_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range),
- range, dma_addr);
- out:
- kfree(plist);
- return res;
-}
-
-static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr)
-{
- u8 cmd[BLK_MAX_CDB];
- int retcode;
- unsigned int opcode;
-
- if (hdr->cmdp == NULL)
- return -EMSGSIZE;
- if (copy_from_user(cmd, hdr->cmdp, hdr->cmd_len))
- return -EFAULT;
-
- /*
- * Prime the hdr with good status for scsi commands that don't require
- * an nvme command for translation.
- */
- retcode = nvme_trans_status_code(hdr, NVME_SC_SUCCESS);
- if (retcode)
- return retcode;
-
- opcode = cmd[0];
-
- switch (opcode) {
- case READ_6:
- case READ_10:
- case READ_12:
- case READ_16:
- retcode = nvme_trans_io(ns, hdr, 0, cmd);
- break;
- case WRITE_6:
- case WRITE_10:
- case WRITE_12:
- case WRITE_16:
- retcode = nvme_trans_io(ns, hdr, 1, cmd);
- break;
- case INQUIRY:
- retcode = nvme_trans_inquiry(ns, hdr, cmd);
- break;
- case LOG_SENSE:
- retcode = nvme_trans_log_sense(ns, hdr, cmd);
- break;
- case MODE_SELECT:
- case MODE_SELECT_10:
- retcode = nvme_trans_mode_select(ns, hdr, cmd);
- break;
- case MODE_SENSE:
- case MODE_SENSE_10:
- retcode = nvme_trans_mode_sense(ns, hdr, cmd);
- break;
- case READ_CAPACITY:
- retcode = nvme_trans_read_capacity(ns, hdr, cmd);
- break;
- case SERVICE_ACTION_IN_16:
- if (IS_READ_CAP_16(cmd))
- retcode = nvme_trans_read_capacity(ns, hdr, cmd);
- else
- goto out;
- break;
- case REPORT_LUNS:
- retcode = nvme_trans_report_luns(ns, hdr, cmd);
- break;
- case REQUEST_SENSE:
- retcode = nvme_trans_request_sense(ns, hdr, cmd);
- break;
- case SECURITY_PROTOCOL_IN:
- case SECURITY_PROTOCOL_OUT:
- retcode = nvme_trans_security_protocol(ns, hdr, cmd);
- break;
- case START_STOP:
- retcode = nvme_trans_start_stop(ns, hdr, cmd);
- break;
- case SYNCHRONIZE_CACHE:
- retcode = nvme_trans_synchronize_cache(ns, hdr, cmd);
- break;
- case FORMAT_UNIT:
- retcode = nvme_trans_format_unit(ns, hdr, cmd);
- break;
- case TEST_UNIT_READY:
- retcode = nvme_trans_test_unit_ready(ns, hdr, cmd);
- break;
- case WRITE_BUFFER:
- retcode = nvme_trans_write_buffer(ns, hdr, cmd);
- break;
- case UNMAP:
- retcode = nvme_trans_unmap(ns, hdr, cmd);
- break;
- default:
- out:
- retcode = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
- return retcode;
-}
-
-int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr)
-{
- struct sg_io_hdr hdr;
- int retcode;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if (copy_from_user(&hdr, u_hdr, sizeof(hdr)))
- return -EFAULT;
- if (hdr.interface_id != 'S')
- return -EINVAL;
- if (hdr.cmd_len > BLK_MAX_CDB)
- return -EINVAL;
-
- retcode = nvme_scsi_translate(ns, &hdr);
- if (retcode < 0)
- return retcode;
- if (retcode > 0)
- retcode = SNTI_TRANSLATION_SUCCESS;
- if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0)
- return -EFAULT;
-
- return retcode;
-}
-
-int nvme_sg_get_version_num(int __user *ip)
-{
- return put_user(sg_version_num, ip);
-}
Code Review / kvmfornfv.git / blobdiff