![Christoph Hellwig](/assets/img/avatar_default.png)
Use block layer queues with an internal cmd_type to submit internally generated NVMe commands. This both simplifies the code a lot and allow for a better structure. For example now the LighNVM code can construct commands without knowing the details of the underlying I/O descriptors. Or a future NVMe over network target could inject commands, as well as could the SCSI translation and ioctl code be reused for such a beast. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2553 lines
68 KiB
C
2553 lines
68 KiB
C
/*
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* NVM Express device driver
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* Copyright (c) 2011-2014, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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/*
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* Refer to the SCSI-NVMe Translation spec for details on how
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* each command is translated.
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*/
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#include <linux/nvme.h>
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#include <linux/bio.h>
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#include <linux/bitops.h>
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#include <linux/blkdev.h>
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#include <linux/compat.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/genhd.h>
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#include <linux/idr.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/kdev_t.h>
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#include <linux/kthread.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/pci.h>
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#include <linux/poison.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <asm/unaligned.h>
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#include <scsi/sg.h>
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#include <scsi/scsi.h>
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static int sg_version_num = 30534; /* 2 digits for each component */
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/* VPD Page Codes */
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#define VPD_SUPPORTED_PAGES 0x00
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#define VPD_SERIAL_NUMBER 0x80
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#define VPD_DEVICE_IDENTIFIERS 0x83
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#define VPD_EXTENDED_INQUIRY 0x86
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#define VPD_BLOCK_LIMITS 0xB0
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#define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1
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/* format unit paramter list offsets */
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#define FORMAT_UNIT_SHORT_PARM_LIST_LEN 4
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#define FORMAT_UNIT_LONG_PARM_LIST_LEN 8
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#define FORMAT_UNIT_PROT_INT_OFFSET 3
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#define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET 0
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#define FORMAT_UNIT_PROT_FIELD_USAGE_MASK 0x07
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/* Misc. defines */
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#define FIXED_SENSE_DATA 0x70
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#define DESC_FORMAT_SENSE_DATA 0x72
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#define FIXED_SENSE_DATA_ADD_LENGTH 10
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#define LUN_ENTRY_SIZE 8
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#define LUN_DATA_HEADER_SIZE 8
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#define ALL_LUNS_RETURNED 0x02
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#define ALL_WELL_KNOWN_LUNS_RETURNED 0x01
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#define RESTRICTED_LUNS_RETURNED 0x00
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#define NVME_POWER_STATE_START_VALID 0x00
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#define NVME_POWER_STATE_ACTIVE 0x01
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#define NVME_POWER_STATE_IDLE 0x02
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#define NVME_POWER_STATE_STANDBY 0x03
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#define NVME_POWER_STATE_LU_CONTROL 0x07
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#define POWER_STATE_0 0
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#define POWER_STATE_1 1
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#define POWER_STATE_2 2
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#define POWER_STATE_3 3
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#define DOWNLOAD_SAVE_ACTIVATE 0x05
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#define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E
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#define ACTIVATE_DEFERRED_MICROCODE 0x0F
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#define FORMAT_UNIT_IMMED_MASK 0x2
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#define FORMAT_UNIT_IMMED_OFFSET 1
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#define KELVIN_TEMP_FACTOR 273
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#define FIXED_FMT_SENSE_DATA_SIZE 18
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#define DESC_FMT_SENSE_DATA_SIZE 8
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/* SCSI/NVMe defines and bit masks */
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#define INQ_STANDARD_INQUIRY_PAGE 0x00
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#define INQ_SUPPORTED_VPD_PAGES_PAGE 0x00
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#define INQ_UNIT_SERIAL_NUMBER_PAGE 0x80
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#define INQ_DEVICE_IDENTIFICATION_PAGE 0x83
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#define INQ_EXTENDED_INQUIRY_DATA_PAGE 0x86
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#define INQ_BDEV_LIMITS_PAGE 0xB0
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#define INQ_BDEV_CHARACTERISTICS_PAGE 0xB1
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#define INQ_SERIAL_NUMBER_LENGTH 0x14
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#define INQ_NUM_SUPPORTED_VPD_PAGES 6
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#define VERSION_SPC_4 0x06
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#define ACA_UNSUPPORTED 0
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#define STANDARD_INQUIRY_LENGTH 36
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#define ADDITIONAL_STD_INQ_LENGTH 31
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#define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C
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#define RESERVED_FIELD 0
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/* Mode Sense/Select defines */
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#define MODE_PAGE_INFO_EXCEP 0x1C
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#define MODE_PAGE_CACHING 0x08
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#define MODE_PAGE_CONTROL 0x0A
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#define MODE_PAGE_POWER_CONDITION 0x1A
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#define MODE_PAGE_RETURN_ALL 0x3F
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#define MODE_PAGE_BLK_DES_LEN 0x08
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#define MODE_PAGE_LLBAA_BLK_DES_LEN 0x10
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#define MODE_PAGE_CACHING_LEN 0x14
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#define MODE_PAGE_CONTROL_LEN 0x0C
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#define MODE_PAGE_POW_CND_LEN 0x28
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#define MODE_PAGE_INF_EXC_LEN 0x0C
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#define MODE_PAGE_ALL_LEN 0x54
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#define MODE_SENSE6_MPH_SIZE 4
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#define MODE_SENSE_PAGE_CONTROL_MASK 0xC0
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#define MODE_SENSE_PAGE_CODE_OFFSET 2
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#define MODE_SENSE_PAGE_CODE_MASK 0x3F
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#define MODE_SENSE_LLBAA_MASK 0x10
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#define MODE_SENSE_LLBAA_SHIFT 4
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#define MODE_SENSE_DBD_MASK 8
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#define MODE_SENSE_DBD_SHIFT 3
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#define MODE_SENSE10_MPH_SIZE 8
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#define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10
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#define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1
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#define MODE_SELECT_6_BD_OFFSET 3
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#define MODE_SELECT_10_BD_OFFSET 6
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#define MODE_SELECT_10_LLBAA_OFFSET 4
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#define MODE_SELECT_10_LLBAA_MASK 1
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#define MODE_SELECT_6_MPH_SIZE 4
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#define MODE_SELECT_10_MPH_SIZE 8
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#define CACHING_MODE_PAGE_WCE_MASK 0x04
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#define MODE_SENSE_BLK_DESC_ENABLED 0
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#define MODE_SENSE_BLK_DESC_COUNT 1
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#define MODE_SELECT_PAGE_CODE_MASK 0x3F
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#define SHORT_DESC_BLOCK 8
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#define LONG_DESC_BLOCK 16
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#define MODE_PAGE_POW_CND_LEN_FIELD 0x26
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#define MODE_PAGE_INF_EXC_LEN_FIELD 0x0A
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#define MODE_PAGE_CACHING_LEN_FIELD 0x12
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#define MODE_PAGE_CONTROL_LEN_FIELD 0x0A
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#define MODE_SENSE_PC_CURRENT_VALUES 0
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/* Log Sense defines */
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#define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE 0x00
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#define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07
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#define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F
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#define LOG_PAGE_TEMPERATURE_PAGE 0x0D
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#define LOG_SENSE_CDB_SP_NOT_ENABLED 0
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#define LOG_SENSE_CDB_PC_MASK 0xC0
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#define LOG_SENSE_CDB_PC_SHIFT 6
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#define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1
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#define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F
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#define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8
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#define LOG_INFO_EXCP_PAGE_LENGTH 0xC
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#define REMAINING_TEMP_PAGE_LENGTH 0xC
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#define LOG_TEMP_PAGE_LENGTH 0x10
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#define LOG_TEMP_UNKNOWN 0xFF
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#define SUPPORTED_LOG_PAGES_PAGE_LENGTH 0x3
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/* Read Capacity defines */
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#define READ_CAP_10_RESP_SIZE 8
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#define READ_CAP_16_RESP_SIZE 32
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/* NVMe Namespace and Command Defines */
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#define BYTES_TO_DWORDS 4
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#define NVME_MAX_FIRMWARE_SLOT 7
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/* Report LUNs defines */
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#define REPORT_LUNS_FIRST_LUN_OFFSET 8
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/* SCSI ADDITIONAL SENSE Codes */
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#define SCSI_ASC_NO_SENSE 0x00
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#define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT 0x03
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#define SCSI_ASC_LUN_NOT_READY 0x04
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#define SCSI_ASC_WARNING 0x0B
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#define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED 0x10
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#define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED 0x10
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#define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED 0x10
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#define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11
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#define SCSI_ASC_MISCOMPARE_DURING_VERIFY 0x1D
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#define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID 0x20
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#define SCSI_ASC_ILLEGAL_COMMAND 0x20
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#define SCSI_ASC_ILLEGAL_BLOCK 0x21
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#define SCSI_ASC_INVALID_CDB 0x24
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#define SCSI_ASC_INVALID_LUN 0x25
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#define SCSI_ASC_INVALID_PARAMETER 0x26
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#define SCSI_ASC_FORMAT_COMMAND_FAILED 0x31
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#define SCSI_ASC_INTERNAL_TARGET_FAILURE 0x44
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/* SCSI ADDITIONAL SENSE Code Qualifiers */
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#define SCSI_ASCQ_CAUSE_NOT_REPORTABLE 0x00
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#define SCSI_ASCQ_FORMAT_COMMAND_FAILED 0x01
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#define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED 0x01
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#define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED 0x02
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#define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED 0x03
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#define SCSI_ASCQ_FORMAT_IN_PROGRESS 0x04
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#define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08
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#define SCSI_ASCQ_INVALID_LUN_ID 0x09
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/* copied from drivers/usb/gadget/function/storage_common.h */
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static inline u32 get_unaligned_be24(u8 *buf)
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{
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return 0xffffff & (u32) get_unaligned_be32(buf - 1);
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}
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/* Struct to gather data that needs to be extracted from a SCSI CDB.
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Not conforming to any particular CDB variant, but compatible with all. */
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struct nvme_trans_io_cdb {
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u8 fua;
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u8 prot_info;
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u64 lba;
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u32 xfer_len;
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};
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/* Internal Helper Functions */
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/* Copy data to userspace memory */
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static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from,
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unsigned long n)
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{
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int i;
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void *index = from;
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size_t remaining = n;
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size_t xfer_len;
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if (hdr->iovec_count > 0) {
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struct sg_iovec sgl;
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for (i = 0; i < hdr->iovec_count; i++) {
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if (copy_from_user(&sgl, hdr->dxferp +
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i * sizeof(struct sg_iovec),
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sizeof(struct sg_iovec)))
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return -EFAULT;
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xfer_len = min(remaining, sgl.iov_len);
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if (copy_to_user(sgl.iov_base, index, xfer_len))
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return -EFAULT;
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index += xfer_len;
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remaining -= xfer_len;
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if (remaining == 0)
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break;
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}
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return 0;
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}
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if (copy_to_user(hdr->dxferp, from, n))
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return -EFAULT;
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return 0;
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}
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/* Copy data from userspace memory */
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static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to,
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unsigned long n)
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{
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int i;
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void *index = to;
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size_t remaining = n;
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size_t xfer_len;
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if (hdr->iovec_count > 0) {
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struct sg_iovec sgl;
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for (i = 0; i < hdr->iovec_count; i++) {
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if (copy_from_user(&sgl, hdr->dxferp +
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i * sizeof(struct sg_iovec),
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sizeof(struct sg_iovec)))
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return -EFAULT;
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xfer_len = min(remaining, sgl.iov_len);
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if (copy_from_user(index, sgl.iov_base, xfer_len))
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return -EFAULT;
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index += xfer_len;
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remaining -= xfer_len;
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if (remaining == 0)
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break;
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}
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return 0;
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}
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if (copy_from_user(to, hdr->dxferp, n))
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return -EFAULT;
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return 0;
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}
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/* Status/Sense Buffer Writeback */
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static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key,
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u8 asc, u8 ascq)
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{
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u8 xfer_len;
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u8 resp[DESC_FMT_SENSE_DATA_SIZE];
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if (scsi_status_is_good(status)) {
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hdr->status = SAM_STAT_GOOD;
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hdr->masked_status = GOOD;
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hdr->host_status = DID_OK;
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hdr->driver_status = DRIVER_OK;
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hdr->sb_len_wr = 0;
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} else {
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hdr->status = status;
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hdr->masked_status = status >> 1;
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hdr->host_status = DID_OK;
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hdr->driver_status = DRIVER_OK;
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memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE);
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resp[0] = DESC_FORMAT_SENSE_DATA;
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resp[1] = sense_key;
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resp[2] = asc;
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resp[3] = ascq;
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xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE);
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hdr->sb_len_wr = xfer_len;
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if (copy_to_user(hdr->sbp, resp, xfer_len) > 0)
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return -EFAULT;
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}
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return 0;
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}
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/*
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* Take a status code from a lowlevel routine, and if it was a positive NVMe
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* error code update the sense data based on it. In either case the passed
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* in value is returned again, unless an -EFAULT from copy_to_user overrides
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* it.
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*/
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static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc)
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{
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u8 status, sense_key, asc, ascq;
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int res;
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/* For non-nvme (Linux) errors, simply return the error code */
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if (nvme_sc < 0)
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return nvme_sc;
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/* Mask DNR, More, and reserved fields */
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switch (nvme_sc & 0x7FF) {
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/* Generic Command Status */
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case NVME_SC_SUCCESS:
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status = SAM_STAT_GOOD;
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sense_key = NO_SENSE;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_INVALID_OPCODE:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = ILLEGAL_REQUEST;
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asc = SCSI_ASC_ILLEGAL_COMMAND;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_INVALID_FIELD:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = ILLEGAL_REQUEST;
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asc = SCSI_ASC_INVALID_CDB;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_DATA_XFER_ERROR:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = MEDIUM_ERROR;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_POWER_LOSS:
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status = SAM_STAT_TASK_ABORTED;
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sense_key = ABORTED_COMMAND;
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asc = SCSI_ASC_WARNING;
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ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED;
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break;
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case NVME_SC_INTERNAL:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = HARDWARE_ERROR;
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asc = SCSI_ASC_INTERNAL_TARGET_FAILURE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_ABORT_REQ:
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status = SAM_STAT_TASK_ABORTED;
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sense_key = ABORTED_COMMAND;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_ABORT_QUEUE:
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status = SAM_STAT_TASK_ABORTED;
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sense_key = ABORTED_COMMAND;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_FUSED_FAIL:
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status = SAM_STAT_TASK_ABORTED;
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sense_key = ABORTED_COMMAND;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_FUSED_MISSING:
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status = SAM_STAT_TASK_ABORTED;
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sense_key = ABORTED_COMMAND;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_INVALID_NS:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = ILLEGAL_REQUEST;
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asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
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ascq = SCSI_ASCQ_INVALID_LUN_ID;
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break;
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case NVME_SC_LBA_RANGE:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = ILLEGAL_REQUEST;
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asc = SCSI_ASC_ILLEGAL_BLOCK;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_CAP_EXCEEDED:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = MEDIUM_ERROR;
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asc = SCSI_ASC_NO_SENSE;
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ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
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break;
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case NVME_SC_NS_NOT_READY:
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status = SAM_STAT_CHECK_CONDITION;
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sense_key = NOT_READY;
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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 ? res : nvme_sc;
|
|
}
|
|
|
|
/* 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;
|
|
struct nvme_id_ns *id_ns;
|
|
int res;
|
|
int nvme_sc;
|
|
int xfer_len;
|
|
u8 resp_data_format = 0x02;
|
|
u8 protect;
|
|
u8 cmdque = 0x01 << 1;
|
|
u8 fw_offset = sizeof(dev->firmware_rev);
|
|
|
|
/* nvme ns identify - use DPS value for PROTECT field */
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
if (id_ns->dps)
|
|
protect = 0x01;
|
|
else
|
|
protect = 0;
|
|
kfree(id_ns);
|
|
|
|
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);
|
|
return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
|
|
}
|
|
|
|
static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns,
|
|
struct sg_io_hdr *hdr, u8 *inq_response,
|
|
int alloc_len)
|
|
{
|
|
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);
|
|
return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
|
|
}
|
|
|
|
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 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);
|
|
return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
|
|
}
|
|
|
|
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;
|
|
int res;
|
|
int nvme_sc;
|
|
int xfer_len;
|
|
__be32 tmp_id = cpu_to_be32(ns->ns_id);
|
|
|
|
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;
|
|
void *eui;
|
|
int len;
|
|
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
eui = id_ns->eui64;
|
|
len = sizeof(id_ns->eui64);
|
|
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)) {
|
|
kfree(id_ns);
|
|
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);
|
|
kfree(id_ns);
|
|
} else {
|
|
scsi_string:
|
|
if (alloc_len < 72) {
|
|
return nvme_trans_completion(hdr,
|
|
SAM_STAT_CHECK_CONDITION,
|
|
ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
|
|
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
|
|
}
|
|
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", to_pci_dev(dev->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;
|
|
return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
|
|
}
|
|
|
|
static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
int alloc_len)
|
|
{
|
|
u8 *inq_response;
|
|
int res;
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
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)
|
|
return -ENOMEM;
|
|
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
goto out_free_inq;
|
|
|
|
spt = spt_lut[id_ns->dpc & 0x07] << 3;
|
|
if (id_ns->dps)
|
|
protect = 0x01;
|
|
else
|
|
protect = 0;
|
|
kfree(id_ns);
|
|
|
|
grd_chk = protect << 2;
|
|
app_chk = protect << 1;
|
|
ref_chk = protect;
|
|
|
|
nvme_sc = nvme_identify_ctrl(dev, &id_ctrl);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
goto out_free_inq;
|
|
|
|
v_sup = id_ctrl->vwc;
|
|
kfree(id_ctrl);
|
|
|
|
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_inq:
|
|
kfree(inq_response);
|
|
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(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;
|
|
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;
|
|
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;
|
|
int xfer_len;
|
|
u8 *log_response;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_smart_log *smart_log;
|
|
u8 temp_c;
|
|
u16 temp_k;
|
|
|
|
log_response = kzalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL);
|
|
if (log_response == NULL)
|
|
return -ENOMEM;
|
|
|
|
res = nvme_get_log_page(dev, &smart_log);
|
|
if (res < 0)
|
|
goto out_free_response;
|
|
|
|
if (res != NVME_SC_SUCCESS) {
|
|
temp_c = LOG_TEMP_UNKNOWN;
|
|
} else {
|
|
temp_k = (smart_log->temperature[1] << 8) +
|
|
(smart_log->temperature[0]);
|
|
temp_c = temp_k - KELVIN_TEMP_FACTOR;
|
|
}
|
|
kfree(smart_log);
|
|
|
|
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);
|
|
|
|
out_free_response:
|
|
kfree(log_response);
|
|
return res;
|
|
}
|
|
|
|
static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
int alloc_len)
|
|
{
|
|
int res;
|
|
int xfer_len;
|
|
u8 *log_response;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_smart_log *smart_log;
|
|
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)
|
|
return -ENOMEM;
|
|
|
|
res = nvme_get_log_page(dev, &smart_log);
|
|
if (res < 0)
|
|
goto out_free_response;
|
|
|
|
if (res != NVME_SC_SUCCESS) {
|
|
temp_c_cur = LOG_TEMP_UNKNOWN;
|
|
} else {
|
|
temp_k = (smart_log->temperature[1] << 8) +
|
|
(smart_log->temperature[0]);
|
|
temp_c_cur = temp_k - KELVIN_TEMP_FACTOR;
|
|
}
|
|
kfree(smart_log);
|
|
|
|
/* 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);
|
|
|
|
out_free_response:
|
|
kfree(log_response);
|
|
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 -EINVAL;
|
|
|
|
if (cdb10) {
|
|
resp[0] = (mode_data_length & 0xFF00) >> 8;
|
|
resp[1] = (mode_data_length & 0x00FF);
|
|
resp[3] = 0x10 /* DPOFUA */;
|
|
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[2] = 0x10 /* DPOFUA */;
|
|
resp[3] = (blk_desc_len & 0x00FF);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *resp, int len, u8 llbaa)
|
|
{
|
|
int res;
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_id_ns *id_ns;
|
|
u8 flbas;
|
|
u32 lba_length;
|
|
|
|
if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN)
|
|
return -EINVAL;
|
|
else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN)
|
|
return -EINVAL;
|
|
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
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));
|
|
}
|
|
|
|
kfree(id_ns);
|
|
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 -EINVAL;
|
|
|
|
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 0;
|
|
}
|
|
|
|
static int nvme_trans_fill_caching_page(struct nvme_ns *ns,
|
|
struct sg_io_hdr *hdr,
|
|
u8 *resp, int len)
|
|
{
|
|
int res = 0;
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
u32 feature_resp;
|
|
u8 vwc;
|
|
|
|
if (len < MODE_PAGE_CACHING_LEN)
|
|
return -EINVAL;
|
|
|
|
nvme_sc = nvme_get_features(dev, NVME_FEAT_VOLATILE_WC, 0, 0,
|
|
&feature_resp);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
vwc = feature_resp & 0x00000001;
|
|
|
|
resp[0] = MODE_PAGE_CACHING;
|
|
resp[1] = MODE_PAGE_CACHING_LEN_FIELD;
|
|
resp[2] = vwc << 2;
|
|
return 0;
|
|
}
|
|
|
|
static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns,
|
|
struct sg_io_hdr *hdr, u8 *resp,
|
|
int len)
|
|
{
|
|
if (len < MODE_PAGE_POW_CND_LEN)
|
|
return -EINVAL;
|
|
|
|
resp[0] = MODE_PAGE_POWER_CONDITION;
|
|
resp[1] = MODE_PAGE_POW_CND_LEN_FIELD;
|
|
/* All other bytes are zero */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns,
|
|
struct sg_io_hdr *hdr, u8 *resp,
|
|
int len)
|
|
{
|
|
if (len < MODE_PAGE_INF_EXC_LEN)
|
|
return -EINVAL;
|
|
|
|
resp[0] = MODE_PAGE_INFO_EXCEP;
|
|
resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD;
|
|
resp[2] = 0x88;
|
|
/* All other bytes are zero */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *resp, int len)
|
|
{
|
|
int res;
|
|
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)
|
|
return res;
|
|
res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2],
|
|
MODE_PAGE_CONTROL_LEN);
|
|
if (res)
|
|
return res;
|
|
res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3],
|
|
MODE_PAGE_POW_CND_LEN);
|
|
if (res)
|
|
return res;
|
|
return nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4],
|
|
MODE_PAGE_INF_EXC_LEN);
|
|
}
|
|
|
|
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;
|
|
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 = (cmd[1] & MODE_SENSE_DBD_MASK) >> MODE_SENSE_DBD_SHIFT;
|
|
llbaa = (cmd[1] & MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT;
|
|
mph_size = cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE;
|
|
|
|
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)
|
|
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)
|
|
goto out_free;
|
|
}
|
|
res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1],
|
|
mode_pages_tot_len);
|
|
if (res)
|
|
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;
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_id_ctrl *id_ctrl;
|
|
int lowest_pow_st; /* max npss = lowest power consumption */
|
|
unsigned ps_desired = 0;
|
|
|
|
nvme_sc = nvme_identify_ctrl(dev, &id_ctrl);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
|
|
kfree(id_ctrl);
|
|
|
|
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);
|
|
return nvme_trans_status_code(hdr, nvme_sc);
|
|
}
|
|
|
|
static int nvme_trans_send_activate_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 buffer_id)
|
|
{
|
|
struct nvme_command c;
|
|
int nvme_sc;
|
|
|
|
memset(&c, 0, sizeof(c));
|
|
c.common.opcode = nvme_admin_activate_fw;
|
|
c.common.cdw10[0] = cpu_to_le32(buffer_id | NVME_FWACT_REPL_ACTV);
|
|
|
|
nvme_sc = nvme_submit_sync_cmd(ns->queue, &c, NULL, 0);
|
|
return nvme_trans_status_code(hdr, nvme_sc);
|
|
}
|
|
|
|
static int nvme_trans_send_download_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 opcode, u32 tot_len, u32 offset,
|
|
u8 buffer_id)
|
|
{
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_command c;
|
|
|
|
if (hdr->iovec_count > 0) {
|
|
/* Assuming SGL is not allowed for this command */
|
|
return nvme_trans_completion(hdr,
|
|
SAM_STAT_CHECK_CONDITION,
|
|
ILLEGAL_REQUEST,
|
|
SCSI_ASC_INVALID_CDB,
|
|
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
|
|
}
|
|
|
|
memset(&c, 0, sizeof(c));
|
|
c.common.opcode = nvme_admin_download_fw;
|
|
c.dlfw.numd = cpu_to_le32((tot_len/BYTES_TO_DWORDS) - 1);
|
|
c.dlfw.offset = cpu_to_le32(offset/BYTES_TO_DWORDS);
|
|
|
|
nvme_sc = __nvme_submit_sync_cmd(dev->admin_q, &c, NULL,
|
|
hdr->dxferp, tot_len, NULL, 0);
|
|
return nvme_trans_status_code(hdr, nvme_sc);
|
|
}
|
|
|
|
/* 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 = 0;
|
|
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);
|
|
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);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
|
|
ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
|
|
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
|
|
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;
|
|
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)
|
|
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)
|
|
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 = 0;
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
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) {
|
|
struct nvme_id_ns *id_ns;
|
|
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
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));
|
|
}
|
|
|
|
kfree(id_ns);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
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)
|
|
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;
|
|
int nvme_sc;
|
|
struct nvme_dev *dev = ns->dev;
|
|
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 */
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
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_sync_cmd(dev->admin_q, &c, NULL, 0);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
|
|
kfree(id_ns);
|
|
return res;
|
|
}
|
|
|
|
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 nvme_sc = NVME_SC_SUCCESS;
|
|
u32 num_cmds;
|
|
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);
|
|
|
|
if (get_capacity(ns->disk) - unit_num_blocks <
|
|
cdb_info->lba + nvme_offset) {
|
|
nvme_sc = NVME_SC_LBA_RANGE;
|
|
break;
|
|
}
|
|
nvme_sc = __nvme_submit_sync_cmd(ns->queue, &c, NULL,
|
|
next_mapping_addr, unit_len, NULL, 0);
|
|
if (nvme_sc)
|
|
break;
|
|
|
|
nvme_offset += unit_num_blocks;
|
|
}
|
|
|
|
return nvme_trans_status_code(hdr, nvme_sc);
|
|
}
|
|
|
|
|
|
/* 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 = 0;
|
|
struct nvme_trans_io_cdb cdb_info = { 0, };
|
|
u8 opcode = cmd[0];
|
|
u64 xfer_bytes;
|
|
u64 sum_iov_len = 0;
|
|
struct sg_iovec sgl;
|
|
int i;
|
|
size_t not_copied;
|
|
|
|
/*
|
|
* The FUA and WPROTECT fields are not supported in 6-byte CDBs,
|
|
* but always in the same place for all others.
|
|
*/
|
|
switch (opcode) {
|
|
case WRITE_6:
|
|
case READ_6:
|
|
break;
|
|
default:
|
|
cdb_info.fua = cmd[1] & 0x8;
|
|
cdb_info.prot_info = (cmd[1] & 0xe0) >> 5;
|
|
if (cdb_info.prot_info && !ns->pi_type) {
|
|
return nvme_trans_completion(hdr,
|
|
SAM_STAT_CHECK_CONDITION,
|
|
ILLEGAL_REQUEST,
|
|
SCSI_ASC_INVALID_CDB,
|
|
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
|
|
}
|
|
}
|
|
|
|
switch (opcode) {
|
|
case WRITE_6:
|
|
case READ_6:
|
|
cdb_info.lba = get_unaligned_be24(&cmd[1]);
|
|
cdb_info.xfer_len = cmd[4];
|
|
if (cdb_info.xfer_len == 0)
|
|
cdb_info.xfer_len = 256;
|
|
break;
|
|
case WRITE_10:
|
|
case READ_10:
|
|
cdb_info.lba = get_unaligned_be32(&cmd[2]);
|
|
cdb_info.xfer_len = get_unaligned_be16(&cmd[7]);
|
|
break;
|
|
case WRITE_12:
|
|
case READ_12:
|
|
cdb_info.lba = get_unaligned_be32(&cmd[2]);
|
|
cdb_info.xfer_len = get_unaligned_be32(&cmd[6]);
|
|
break;
|
|
case WRITE_16:
|
|
case READ_16:
|
|
cdb_info.lba = get_unaligned_be64(&cmd[2]);
|
|
cdb_info.xfer_len = get_unaligned_be32(&cmd[10]);
|
|
break;
|
|
default:
|
|
/* Will never really reach here */
|
|
res = -EIO;
|
|
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)
|
|
goto out;
|
|
|
|
out:
|
|
return res;
|
|
}
|
|
|
|
static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
int res = 0;
|
|
u8 evpd;
|
|
u8 page_code;
|
|
int alloc_len;
|
|
u8 *inq_response;
|
|
|
|
evpd = cmd[1] & 0x01;
|
|
page_code = cmd[2];
|
|
alloc_len = get_unaligned_be16(&cmd[3]);
|
|
|
|
inq_response = kmalloc(alloc_len, 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;
|
|
u16 alloc_len;
|
|
u8 pc;
|
|
u8 page_code;
|
|
|
|
if (cmd[1] != 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;
|
|
}
|
|
|
|
page_code = cmd[2] & LOG_SENSE_CDB_PAGE_CODE_MASK;
|
|
pc = (cmd[2] & 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_unaligned_be16(&cmd[7]);
|
|
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)
|
|
{
|
|
u8 cdb10 = 0;
|
|
u16 parm_list_len;
|
|
u8 page_format;
|
|
u8 save_pages;
|
|
|
|
page_format = cmd[1] & MODE_SELECT_CDB_PAGE_FORMAT_MASK;
|
|
save_pages = cmd[1] & MODE_SELECT_CDB_SAVE_PAGES_MASK;
|
|
|
|
if (cmd[0] == MODE_SELECT) {
|
|
parm_list_len = cmd[4];
|
|
} else {
|
|
parm_list_len = cmd[7];
|
|
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
|
|
*/
|
|
return nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len,
|
|
page_format, save_pages, cdb10);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
int res = 0;
|
|
u16 alloc_len;
|
|
u8 cdb10 = 0;
|
|
|
|
if (cmd[0] == MODE_SENSE) {
|
|
alloc_len = cmd[4];
|
|
} else {
|
|
alloc_len = get_unaligned_be16(&cmd[7]);
|
|
cdb10 = 1;
|
|
}
|
|
|
|
if ((cmd[2] & MODE_SENSE_PAGE_CONTROL_MASK) !=
|
|
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;
|
|
}
|
|
|
|
switch (cmd[2] & MODE_SENSE_PAGE_CODE_MASK) {
|
|
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, u8 cdb16)
|
|
{
|
|
int res;
|
|
int nvme_sc;
|
|
u32 alloc_len;
|
|
u32 resp_size;
|
|
u32 xfer_len;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_id_ns *id_ns;
|
|
u8 *response;
|
|
|
|
if (cdb16) {
|
|
alloc_len = get_unaligned_be32(&cmd[10]);
|
|
resp_size = READ_CAP_16_RESP_SIZE;
|
|
} else {
|
|
alloc_len = READ_CAP_10_RESP_SIZE;
|
|
resp_size = READ_CAP_10_RESP_SIZE;
|
|
}
|
|
|
|
nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
response = kzalloc(resp_size, GFP_KERNEL);
|
|
if (response == NULL) {
|
|
res = -ENOMEM;
|
|
goto out_free_id;
|
|
}
|
|
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_free_id:
|
|
kfree(id_ns);
|
|
return res;
|
|
}
|
|
|
|
static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
int res;
|
|
int nvme_sc;
|
|
u32 alloc_len, xfer_len, resp_size;
|
|
u8 *response;
|
|
struct nvme_dev *dev = ns->dev;
|
|
struct nvme_id_ctrl *id_ctrl;
|
|
u32 ll_length, lun_id;
|
|
u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET;
|
|
__be32 tmp_len;
|
|
|
|
switch (cmd[2]) {
|
|
default:
|
|
return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
|
|
ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
|
|
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
|
|
case ALL_LUNS_RETURNED:
|
|
case ALL_WELL_KNOWN_LUNS_RETURNED:
|
|
case RESTRICTED_LUNS_RETURNED:
|
|
nvme_sc = nvme_identify_ctrl(dev, &id_ctrl);
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
if (res)
|
|
return res;
|
|
|
|
ll_length = le32_to_cpu(id_ctrl->nn) * LUN_ENTRY_SIZE;
|
|
resp_size = ll_length + LUN_DATA_HEADER_SIZE;
|
|
|
|
alloc_len = get_unaligned_be32(&cmd[6]);
|
|
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_free_id;
|
|
}
|
|
|
|
response = kzalloc(resp_size, GFP_KERNEL);
|
|
if (response == NULL) {
|
|
res = -ENOMEM;
|
|
goto out_free_id;
|
|
}
|
|
|
|
/* 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_free_id:
|
|
kfree(id_ctrl);
|
|
return res;
|
|
}
|
|
|
|
static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
int res;
|
|
u8 alloc_len, xfer_len, resp_size;
|
|
u8 desc_format;
|
|
u8 *response;
|
|
|
|
desc_format = cmd[1] & 0x01;
|
|
alloc_len = cmd[4];
|
|
|
|
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 */
|
|
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_synchronize_cache(struct nvme_ns *ns,
|
|
struct sg_io_hdr *hdr)
|
|
{
|
|
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_sync_cmd(ns->queue, &c, NULL, 0);
|
|
return nvme_trans_status_code(hdr, nvme_sc);
|
|
}
|
|
|
|
static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
u8 immed, pcmod, pc, no_flush, start;
|
|
|
|
immed = cmd[1] & 0x01;
|
|
pcmod = cmd[3] & 0x0f;
|
|
pc = (cmd[4] & 0xf0) >> 4;
|
|
no_flush = cmd[4] & 0x04;
|
|
start = cmd[4] & 0x01;
|
|
|
|
if (immed != 0) {
|
|
return 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 */
|
|
int res = nvme_trans_synchronize_cache(ns, hdr);
|
|
if (res)
|
|
return res;
|
|
}
|
|
/* Setup the expected power state transition */
|
|
return nvme_trans_power_state(ns, hdr, pc, pcmod, start);
|
|
}
|
|
}
|
|
|
|
static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
int res;
|
|
u8 parm_hdr_len = 0;
|
|
u8 nvme_pf_code = 0;
|
|
u8 format_prot_info, long_list, format_data;
|
|
|
|
format_prot_info = (cmd[1] & 0xc0) >> 6;
|
|
long_list = cmd[1] & 0x20;
|
|
format_data = cmd[1] & 0x10;
|
|
|
|
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)
|
|
goto out;
|
|
}
|
|
|
|
/* Attempt to activate any previously downloaded firmware image */
|
|
res = nvme_trans_send_activate_fw_cmd(ns, hdr, 0);
|
|
|
|
/* Determine Block size and count and send format command */
|
|
res = nvme_trans_fmt_set_blk_size_count(ns, hdr);
|
|
if (res)
|
|
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)
|
|
{
|
|
struct nvme_dev *dev = ns->dev;
|
|
|
|
if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY))
|
|
return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
|
|
NOT_READY, SCSI_ASC_LUN_NOT_READY,
|
|
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
|
|
else
|
|
return nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0);
|
|
}
|
|
|
|
static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|
u8 *cmd)
|
|
{
|
|
int res = 0;
|
|
u32 buffer_offset, parm_list_length;
|
|
u8 buffer_id, mode;
|
|
|
|
parm_list_length = get_unaligned_be24(&cmd[6]);
|
|
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 = cmd[2];
|
|
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 = cmd[1] & 0x1f;
|
|
buffer_offset = get_unaligned_be24(&cmd[3]);
|
|
|
|
switch (mode) {
|
|
case DOWNLOAD_SAVE_ACTIVATE:
|
|
res = nvme_trans_send_download_fw_cmd(ns, hdr, nvme_admin_download_fw,
|
|
parm_list_length, buffer_offset,
|
|
buffer_id);
|
|
if (res)
|
|
goto out;
|
|
res = nvme_trans_send_activate_fw_cmd(ns, hdr, buffer_id);
|
|
break;
|
|
case DOWNLOAD_SAVE_DEFER_ACTIVATE:
|
|
res = nvme_trans_send_download_fw_cmd(ns, hdr, nvme_admin_download_fw,
|
|
parm_list_length, buffer_offset,
|
|
buffer_id);
|
|
break;
|
|
case ACTIVATE_DEFERRED_MICROCODE:
|
|
res = nvme_trans_send_activate_fw_cmd(ns, hdr, 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 scsi_unmap_parm_list *plist;
|
|
struct nvme_dsm_range *range;
|
|
struct nvme_command c;
|
|
int i, nvme_sc, res = -ENOMEM;
|
|
u16 ndesc, list_len;
|
|
|
|
list_len = get_unaligned_be16(&cmd[7]);
|
|
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)
|
|
goto out;
|
|
|
|
ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4;
|
|
if (!ndesc || ndesc > 256) {
|
|
res = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
range = kcalloc(ndesc, sizeof(*range), 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.nr = cpu_to_le32(ndesc - 1);
|
|
c.dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);
|
|
|
|
nvme_sc = nvme_submit_sync_cmd(ns->queue, &c, range,
|
|
ndesc * sizeof(*range));
|
|
res = nvme_trans_status_code(hdr, nvme_sc);
|
|
|
|
kfree(range);
|
|
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, 0);
|
|
break;
|
|
case SERVICE_ACTION_IN_16:
|
|
switch (cmd[1]) {
|
|
case SAI_READ_CAPACITY_16:
|
|
retcode = nvme_trans_read_capacity(ns, hdr, cmd, 1);
|
|
break;
|
|
default:
|
|
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);
|
|
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;
|
|
|
|
/*
|
|
* A positive return code means a NVMe status, which has been
|
|
* translated to sense data.
|
|
*/
|
|
retcode = nvme_scsi_translate(ns, &hdr);
|
|
if (retcode < 0)
|
|
return retcode;
|
|
if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0)
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
int nvme_sg_get_version_num(int __user *ip)
|
|
{
|
|
return put_user(sg_version_num, ip);
|
|
}
|