| /* |
| * NVM Express device driver |
| * Copyright (c) 2011-2014, Intel Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| */ |
| |
| /* |
| * Refer to the SCSI-NVMe Translation spec for details on how |
| * each command is translated. |
| */ |
| |
| #include <linux/bio.h> |
| #include <linux/bitops.h> |
| #include <linux/blkdev.h> |
| #include <linux/compat.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/fs.h> |
| #include <linux/genhd.h> |
| #include <linux/idr.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/kdev_t.h> |
| #include <linux/kthread.h> |
| #include <linux/kernel.h> |
| #include <linux/mm.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/pci.h> |
| #include <linux/poison.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/types.h> |
| #include <asm/unaligned.h> |
| #include <scsi/sg.h> |
| #include <scsi/scsi.h> |
| |
| #include "nvme.h" |
| |
| static int sg_version_num = 30534; /* 2 digits for each component */ |
| |
| /* VPD Page Codes */ |
| #define VPD_SUPPORTED_PAGES 0x00 |
| #define VPD_SERIAL_NUMBER 0x80 |
| #define VPD_DEVICE_IDENTIFIERS 0x83 |
| #define VPD_EXTENDED_INQUIRY 0x86 |
| #define VPD_BLOCK_LIMITS 0xB0 |
| #define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1 |
| |
| /* format unit paramter list offsets */ |
| #define FORMAT_UNIT_SHORT_PARM_LIST_LEN 4 |
| #define FORMAT_UNIT_LONG_PARM_LIST_LEN 8 |
| #define FORMAT_UNIT_PROT_INT_OFFSET 3 |
| #define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET 0 |
| #define FORMAT_UNIT_PROT_FIELD_USAGE_MASK 0x07 |
| |
| /* Misc. defines */ |
| #define FIXED_SENSE_DATA 0x70 |
| #define DESC_FORMAT_SENSE_DATA 0x72 |
| #define FIXED_SENSE_DATA_ADD_LENGTH 10 |
| #define LUN_ENTRY_SIZE 8 |
| #define LUN_DATA_HEADER_SIZE 8 |
| #define ALL_LUNS_RETURNED 0x02 |
| #define ALL_WELL_KNOWN_LUNS_RETURNED 0x01 |
| #define RESTRICTED_LUNS_RETURNED 0x00 |
| #define DOWNLOAD_SAVE_ACTIVATE 0x05 |
| #define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E |
| #define ACTIVATE_DEFERRED_MICROCODE 0x0F |
| #define FORMAT_UNIT_IMMED_MASK 0x2 |
| #define FORMAT_UNIT_IMMED_OFFSET 1 |
| #define KELVIN_TEMP_FACTOR 273 |
| #define FIXED_FMT_SENSE_DATA_SIZE 18 |
| #define DESC_FMT_SENSE_DATA_SIZE 8 |
| |
| /* SCSI/NVMe defines and bit masks */ |
| #define INQ_STANDARD_INQUIRY_PAGE 0x00 |
| #define INQ_SUPPORTED_VPD_PAGES_PAGE 0x00 |
| #define INQ_UNIT_SERIAL_NUMBER_PAGE 0x80 |
| #define INQ_DEVICE_IDENTIFICATION_PAGE 0x83 |
| #define INQ_EXTENDED_INQUIRY_DATA_PAGE 0x86 |
| #define INQ_BDEV_LIMITS_PAGE 0xB0 |
| #define INQ_BDEV_CHARACTERISTICS_PAGE 0xB1 |
| #define INQ_SERIAL_NUMBER_LENGTH 0x14 |
| #define INQ_NUM_SUPPORTED_VPD_PAGES 6 |
| #define VERSION_SPC_4 0x06 |
| #define ACA_UNSUPPORTED 0 |
| #define STANDARD_INQUIRY_LENGTH 36 |
| #define ADDITIONAL_STD_INQ_LENGTH 31 |
| #define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C |
| #define RESERVED_FIELD 0 |
| |
| /* Mode Sense/Select defines */ |
| #define MODE_PAGE_INFO_EXCEP 0x1C |
| #define MODE_PAGE_CACHING 0x08 |
| #define MODE_PAGE_CONTROL 0x0A |
| #define MODE_PAGE_POWER_CONDITION 0x1A |
| #define MODE_PAGE_RETURN_ALL 0x3F |
| #define MODE_PAGE_BLK_DES_LEN 0x08 |
| #define MODE_PAGE_LLBAA_BLK_DES_LEN 0x10 |
| #define MODE_PAGE_CACHING_LEN 0x14 |
| #define MODE_PAGE_CONTROL_LEN 0x0C |
| #define MODE_PAGE_POW_CND_LEN 0x28 |
| #define MODE_PAGE_INF_EXC_LEN 0x0C |
| #define MODE_PAGE_ALL_LEN 0x54 |
| #define MODE_SENSE6_MPH_SIZE 4 |
| #define MODE_SENSE_PAGE_CONTROL_MASK 0xC0 |
| #define MODE_SENSE_PAGE_CODE_OFFSET 2 |
| #define MODE_SENSE_PAGE_CODE_MASK 0x3F |
| #define MODE_SENSE_LLBAA_MASK 0x10 |
| #define MODE_SENSE_LLBAA_SHIFT 4 |
| #define MODE_SENSE_DBD_MASK 8 |
| #define MODE_SENSE_DBD_SHIFT 3 |
| #define MODE_SENSE10_MPH_SIZE 8 |
| #define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10 |
| #define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1 |
| #define MODE_SELECT_6_BD_OFFSET 3 |
| #define MODE_SELECT_10_BD_OFFSET 6 |
| #define MODE_SELECT_10_LLBAA_OFFSET 4 |
| #define MODE_SELECT_10_LLBAA_MASK 1 |
| #define MODE_SELECT_6_MPH_SIZE 4 |
| #define MODE_SELECT_10_MPH_SIZE 8 |
| #define CACHING_MODE_PAGE_WCE_MASK 0x04 |
| #define MODE_SENSE_BLK_DESC_ENABLED 0 |
| #define MODE_SENSE_BLK_DESC_COUNT 1 |
| #define MODE_SELECT_PAGE_CODE_MASK 0x3F |
| #define SHORT_DESC_BLOCK 8 |
| #define LONG_DESC_BLOCK 16 |
| #define MODE_PAGE_POW_CND_LEN_FIELD 0x26 |
| #define MODE_PAGE_INF_EXC_LEN_FIELD 0x0A |
| #define MODE_PAGE_CACHING_LEN_FIELD 0x12 |
| #define MODE_PAGE_CONTROL_LEN_FIELD 0x0A |
| #define MODE_SENSE_PC_CURRENT_VALUES 0 |
| |
| /* Log Sense defines */ |
| #define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE 0x00 |
| #define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07 |
| #define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F |
| #define LOG_PAGE_TEMPERATURE_PAGE 0x0D |
| #define LOG_SENSE_CDB_SP_NOT_ENABLED 0 |
| #define LOG_SENSE_CDB_PC_MASK 0xC0 |
| #define LOG_SENSE_CDB_PC_SHIFT 6 |
| #define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1 |
| #define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F |
| #define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8 |
| #define LOG_INFO_EXCP_PAGE_LENGTH 0xC |
| #define REMAINING_TEMP_PAGE_LENGTH 0xC |
| #define LOG_TEMP_PAGE_LENGTH 0x10 |
| #define LOG_TEMP_UNKNOWN 0xFF |
| #define SUPPORTED_LOG_PAGES_PAGE_LENGTH 0x3 |
| |
| /* Read Capacity defines */ |
| #define READ_CAP_10_RESP_SIZE 8 |
| #define READ_CAP_16_RESP_SIZE 32 |
| |
| /* NVMe Namespace and Command Defines */ |
| #define BYTES_TO_DWORDS 4 |
| #define NVME_MAX_FIRMWARE_SLOT 7 |
| |
| /* Report LUNs defines */ |
| #define REPORT_LUNS_FIRST_LUN_OFFSET 8 |
| |
| /* SCSI ADDITIONAL SENSE Codes */ |
| |
| #define SCSI_ASC_NO_SENSE 0x00 |
| #define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT 0x03 |
| #define SCSI_ASC_LUN_NOT_READY 0x04 |
| #define SCSI_ASC_WARNING 0x0B |
| #define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED 0x10 |
| #define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED 0x10 |
| #define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED 0x10 |
| #define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11 |
| #define SCSI_ASC_MISCOMPARE_DURING_VERIFY 0x1D |
| #define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID 0x20 |
| #define SCSI_ASC_ILLEGAL_COMMAND 0x20 |
| #define SCSI_ASC_ILLEGAL_BLOCK 0x21 |
| #define SCSI_ASC_INVALID_CDB 0x24 |
| #define SCSI_ASC_INVALID_LUN 0x25 |
| #define SCSI_ASC_INVALID_PARAMETER 0x26 |
| #define SCSI_ASC_FORMAT_COMMAND_FAILED 0x31 |
| #define SCSI_ASC_INTERNAL_TARGET_FAILURE 0x44 |
| |
| /* SCSI ADDITIONAL SENSE Code Qualifiers */ |
| |
| #define SCSI_ASCQ_CAUSE_NOT_REPORTABLE 0x00 |
| #define SCSI_ASCQ_FORMAT_COMMAND_FAILED 0x01 |
| #define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED 0x01 |
| #define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED 0x02 |
| #define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED 0x03 |
| #define SCSI_ASCQ_FORMAT_IN_PROGRESS 0x04 |
| #define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08 |
| #define SCSI_ASCQ_INVALID_LUN_ID 0x09 |
| |
| /* copied from drivers/usb/gadget/function/storage_common.h */ |
| static inline u32 get_unaligned_be24(u8 *buf) |
| { |
| return 0xffffff & (u32) get_unaligned_be32(buf - 1); |
| } |
| |
| /* Struct to gather data that needs to be extracted from a SCSI CDB. |
| Not conforming to any particular CDB variant, but compatible with all. */ |
| |
| struct nvme_trans_io_cdb { |
| u8 fua; |
| u8 prot_info; |
| u64 lba; |
| u32 xfer_len; |
| }; |
| |
| |
| /* Internal Helper Functions */ |
| |
| |
| /* Copy data to userspace memory */ |
| |
| static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from, |
| unsigned long n) |
| { |
| int i; |
| void *index = from; |
| size_t remaining = n; |
| size_t xfer_len; |
| |
| if (hdr->iovec_count > 0) { |
| struct sg_iovec sgl; |
| |
| for (i = 0; i < hdr->iovec_count; i++) { |
| if (copy_from_user(&sgl, hdr->dxferp + |
| i * sizeof(struct sg_iovec), |
| sizeof(struct sg_iovec))) |
| return -EFAULT; |
| xfer_len = min(remaining, sgl.iov_len); |
| if (copy_to_user(sgl.iov_base, index, xfer_len)) |
| return -EFAULT; |
| |
| index += xfer_len; |
| remaining -= xfer_len; |
| if (remaining == 0) |
| break; |
| } |
| return 0; |
| } |
| |
| if (copy_to_user(hdr->dxferp, from, n)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| /* Copy data from userspace memory */ |
| |
| static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to, |
| unsigned long n) |
| { |
| int i; |
| void *index = to; |
| size_t remaining = n; |
| size_t xfer_len; |
| |
| if (hdr->iovec_count > 0) { |
| struct sg_iovec sgl; |
| |
| for (i = 0; i < hdr->iovec_count; i++) { |
| if (copy_from_user(&sgl, hdr->dxferp + |
| i * sizeof(struct sg_iovec), |
| sizeof(struct sg_iovec))) |
| return -EFAULT; |
| xfer_len = min(remaining, sgl.iov_len); |
| if (copy_from_user(index, sgl.iov_base, xfer_len)) |
| return -EFAULT; |
| index += xfer_len; |
| remaining -= xfer_len; |
| if (remaining == 0) |
| break; |
| } |
| return 0; |
| } |
| |
| if (copy_from_user(to, hdr->dxferp, n)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| /* Status/Sense Buffer Writeback */ |
| |
| static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key, |
| u8 asc, u8 ascq) |
| { |
| u8 xfer_len; |
| u8 resp[DESC_FMT_SENSE_DATA_SIZE]; |
| |
| if (scsi_status_is_good(status)) { |
| hdr->status = SAM_STAT_GOOD; |
| hdr->masked_status = GOOD; |
| hdr->host_status = DID_OK; |
| hdr->driver_status = DRIVER_OK; |
| hdr->sb_len_wr = 0; |
| } else { |
| hdr->status = status; |
| hdr->masked_status = status >> 1; |
| hdr->host_status = DID_OK; |
| hdr->driver_status = DRIVER_OK; |
| |
| memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE); |
| resp[0] = DESC_FORMAT_SENSE_DATA; |
| resp[1] = sense_key; |
| resp[2] = asc; |
| resp[3] = ascq; |
| |
| xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE); |
| hdr->sb_len_wr = xfer_len; |
| if (copy_to_user(hdr->sbp, resp, xfer_len) > 0) |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Take a status code from a lowlevel routine, and if it was a positive NVMe |
| * error code update the sense data based on it. In either case the passed |
| * in value is returned again, unless an -EFAULT from copy_to_user overrides |
| * it. |
| */ |
| static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc) |
| { |
| u8 status, sense_key, asc, ascq; |
| int res; |
| |
| /* For non-nvme (Linux) errors, simply return the error code */ |
| if (nvme_sc < 0) |
| return nvme_sc; |
| |
| /* Mask DNR, More, and reserved fields */ |
| switch (nvme_sc & 0x7FF) { |
| /* Generic Command Status */ |
| case NVME_SC_SUCCESS: |
| status = SAM_STAT_GOOD; |
| sense_key = NO_SENSE; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_INVALID_OPCODE: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_ILLEGAL_COMMAND; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_INVALID_FIELD: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_INVALID_CDB; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_DATA_XFER_ERROR: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_POWER_LOSS: |
| status = SAM_STAT_TASK_ABORTED; |
| sense_key = ABORTED_COMMAND; |
| asc = SCSI_ASC_WARNING; |
| ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED; |
| break; |
| case NVME_SC_INTERNAL: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = HARDWARE_ERROR; |
| asc = SCSI_ASC_INTERNAL_TARGET_FAILURE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_ABORT_REQ: |
| status = SAM_STAT_TASK_ABORTED; |
| sense_key = ABORTED_COMMAND; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_ABORT_QUEUE: |
| status = SAM_STAT_TASK_ABORTED; |
| sense_key = ABORTED_COMMAND; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_FUSED_FAIL: |
| status = SAM_STAT_TASK_ABORTED; |
| sense_key = ABORTED_COMMAND; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_FUSED_MISSING: |
| status = SAM_STAT_TASK_ABORTED; |
| sense_key = ABORTED_COMMAND; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_INVALID_NS: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID; |
| ascq = SCSI_ASCQ_INVALID_LUN_ID; |
| break; |
| case NVME_SC_LBA_RANGE: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_ILLEGAL_BLOCK; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_CAP_EXCEEDED: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_NS_NOT_READY: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = NOT_READY; |
| asc = SCSI_ASC_LUN_NOT_READY; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| |
| /* Command Specific Status */ |
| case NVME_SC_INVALID_FORMAT: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_FORMAT_COMMAND_FAILED; |
| ascq = SCSI_ASCQ_FORMAT_COMMAND_FAILED; |
| break; |
| case NVME_SC_BAD_ATTRIBUTES: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_INVALID_CDB; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| |
| /* Media Errors */ |
| case NVME_SC_WRITE_FAULT: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_READ_ERROR: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_UNRECOVERED_READ_ERROR; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_GUARD_CHECK: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED; |
| ascq = SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED; |
| break; |
| case NVME_SC_APPTAG_CHECK: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED; |
| ascq = SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED; |
| break; |
| case NVME_SC_REFTAG_CHECK: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MEDIUM_ERROR; |
| asc = SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED; |
| ascq = SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED; |
| break; |
| case NVME_SC_COMPARE_FAILED: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = MISCOMPARE; |
| asc = SCSI_ASC_MISCOMPARE_DURING_VERIFY; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| case NVME_SC_ACCESS_DENIED: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID; |
| ascq = SCSI_ASCQ_INVALID_LUN_ID; |
| break; |
| |
| /* Unspecified/Default */ |
| case NVME_SC_CMDID_CONFLICT: |
| case NVME_SC_CMD_SEQ_ERROR: |
| case NVME_SC_CQ_INVALID: |
| case NVME_SC_QID_INVALID: |
| case NVME_SC_QUEUE_SIZE: |
| case NVME_SC_ABORT_LIMIT: |
| case NVME_SC_ABORT_MISSING: |
| case NVME_SC_ASYNC_LIMIT: |
| case NVME_SC_FIRMWARE_SLOT: |
| case NVME_SC_FIRMWARE_IMAGE: |
| case NVME_SC_INVALID_VECTOR: |
| case NVME_SC_INVALID_LOG_PAGE: |
| default: |
| status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ILLEGAL_REQUEST; |
| asc = SCSI_ASC_NO_SENSE; |
| ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE; |
| break; |
| } |
| |
| res = nvme_trans_completion(hdr, status, sense_key, asc, ascq); |
| return res ? 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_ctrl *ctrl = ns->ctrl; |
| 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(ctrl->firmware_rev); |
| |
| /* nvme ns identify - use DPS value for PROTECT field */ |
| nvme_sc = nvme_identify_ns(ctrl, 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], ctrl->model, 16); |
| |
| while (ctrl->firmware_rev[fw_offset - 1] == ' ' && fw_offset > 4) |
| fw_offset--; |
| fw_offset -= 4; |
| strncpy(&inq_response[32], ctrl->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) |
| { |
| 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], ns->ctrl->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_fill_device_id_eui64(struct nvme_ns *ns, struct sg_io_hdr *hdr, |
| u8 *inq_response, int alloc_len) |
| { |
| struct nvme_id_ns *id_ns; |
| int nvme_sc, res; |
| size_t len; |
| void *eui; |
| |
| nvme_sc = nvme_identify_ns(ns->ctrl, 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 (ns->ctrl->vs >= NVME_VS(1, 2, 0)) { |
| if (bitmap_empty(eui, len * 8)) { |
| eui = id_ns->nguid; |
| len = sizeof(id_ns->nguid); |
| } |
| } |
| |
| if (bitmap_empty(eui, len * 8)) { |
| res = -EOPNOTSUPP; |
| goto out_free_id; |
| } |
| |
| memset(inq_response, 0, alloc_len); |
| inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE; |
| 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); |
| |
| res = nvme_trans_copy_to_user(hdr, inq_response, alloc_len); |
| out_free_id: |
| kfree(id_ns); |
| return res; |
| } |
| |
| static int nvme_fill_device_id_scsi_string(struct nvme_ns *ns, |
| struct sg_io_hdr *hdr, u8 *inq_response, int alloc_len) |
| { |
| struct nvme_ctrl *ctrl = ns->ctrl; |
| struct nvme_id_ctrl *id_ctrl; |
| int nvme_sc, res; |
| |
| if (alloc_len < 72) { |
| return nvme_trans_completion(hdr, |
| SAM_STAT_CHECK_CONDITION, |
| ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, |
| SCSI_ASCQ_CAUSE_NOT_REPORTABLE); |
| } |
| |
| nvme_sc = nvme_identify_ctrl(ctrl, &id_ctrl); |
| res = nvme_trans_status_code(hdr, nvme_sc); |
| if (res) |
| return res; |
| |
| memset(inq_response, 0, alloc_len); |
| inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE; |
| 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", le16_to_cpu(id_ctrl->vid)); |
| memcpy(&inq_response[12], ctrl->model, sizeof(ctrl->model)); |
| sprintf(&inq_response[52], "%04x", cpu_to_be32(ns->ns_id)); |
| memcpy(&inq_response[56], ctrl->serial, sizeof(ctrl->serial)); |
| |
| res = nvme_trans_copy_to_user(hdr, inq_response, alloc_len); |
| kfree(id_ctrl); |
| return res; |
| } |
| |
| static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, |
| u8 *resp, int alloc_len) |
| { |
| int res; |
| |
| if (ns->ctrl->vs >= NVME_VS(1, 1, 0)) { |
| res = nvme_fill_device_id_eui64(ns, hdr, resp, alloc_len); |
| if (res != -EOPNOTSUPP) |
| return res; |
| } |
| |
| return nvme_fill_device_id_scsi_string(ns, hdr, resp, alloc_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_ctrl *ctrl = ns->ctrl; |
| 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(ctrl, 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(ctrl, &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( |
| nvme_block_nr(ns, queue_max_hw_sectors(ns->queue))); |
| __be32 max_discard = cpu_to_be32(ns->queue->limits.max_discard_sectors); |
| __be32 discard_desc_count = cpu_to_be32(0x100); |
| |
| memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); |
| inq_response[1] = VPD_BLOCK_LIMITS; |
| inq_response[3] = 0x3c; /* Page Length */ |
| memcpy(&inq_response[8], &max_sectors, sizeof(u32)); |
| memcpy(&inq_response[20], &max_discard, sizeof(u32)); |
| |
| if (max_discard) |
| memcpy(&inq_response[24], &discard_desc_count, sizeof(u32)); |
| |
| return nvme_trans_copy_to_user(hdr, inq_response, 0x3c); |
| } |
| |
| static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, |
| int alloc_len) |
| { |
| u8 *inq_response; |
| int res; |
| 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_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(ns->ctrl, &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_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(ns->ctrl, &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(ns->ctrl, NVME_FEAT_TEMP_THRESH, 0, NULL, 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_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(ns->ctrl, 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; |
| u32 feature_resp; |
| u8 vwc; |
| |
| if (len < MODE_PAGE_CACHING_LEN) |
| return -EINVAL; |
| |
| nvme_sc = nvme_get_features(ns->ctrl, NVME_FEAT_VOLATILE_WC, 0, NULL, 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_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_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_user_cmd(ns->ctrl->admin_q, &c, |
| 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) |
| { |
| /* 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; |
| 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(ns->ctrl, NVME_FEAT_VOLATILE_WC, |
| dword11, NULL, 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; |
| 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(ns->ctrl, 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_id_ns *id_ns; |
| u8 i; |
| u8 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(ns->ctrl, ns->ns_id, &id_ns); |
| res = nvme_trans_status_code(hdr, nvme_sc); |
| if (res) |
| return res; |
| |
| 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(ns->ctrl->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_user_cmd(ns->queue, &c, |
| 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(max(alloc_len, STANDARD_INQUIRY_LENGTH), |
| GFP_KERNEL); |
| if (inq_response == NULL) { |
| res = -ENOMEM; |
| goto out_mem; |
| } |
| |
| if (evpd == 0) { |
| if (page_code == INQ_STANDARD_INQUIRY_PAGE) { |
| res = nvme_trans_standard_inquiry_page(ns, hdr, |
| inq_response, alloc_len); |
| } else { |
| res = nvme_trans_completion(hdr, |
| SAM_STAT_CHECK_CONDITION, |
| ILLEGAL_REQUEST, |
| SCSI_ASC_INVALID_CDB, |
| SCSI_ASCQ_CAUSE_NOT_REPORTABLE); |
| } |
| } else { |
| switch (page_code) { |
| case VPD_SUPPORTED_PAGES: |
| res = nvme_trans_supported_vpd_pages(ns, hdr, |
| inq_response, alloc_len); |
| break; |
| case VPD_SERIAL_NUMBER: |
| res = nvme_trans_unit_serial_page(ns, hdr, inq_response, |
| alloc_len); |
| break; |
| case VPD_DEVICE_IDENTIFIERS: |
| res = nvme_trans_device_id_page(ns, hdr, inq_response, |
| alloc_len); |
| break; |
| case VPD_EXTENDED_INQUIRY: |
| res = nvme_trans_ext_inq_page(ns, hdr, alloc_len); |
| break; |
| case VPD_BLOCK_LIMITS: |
| res = nvme_trans_bdev_limits_page(ns, hdr, inq_response, |
| alloc_len); |
| break; |
| case VPD_BLOCK_DEV_CHARACTERISTICS: |
| res = nvme_trans_bdev_char_page(ns, hdr, alloc_len); |
| break; |
| default: |
| res = nvme_trans_completion(hdr, |
| SAM_STAT_CHECK_CONDITION, |
| ILLEGAL_REQUEST, |
| SCSI_ASC_INVALID_CDB, |
| SCSI_ASCQ_CAUSE_NOT_REPORTABLE); |
| break; |
| } |
| } |
| kfree(inq_response); |
| out_mem: |
| return res; |
| } |
| |
| static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, |
| u8 *cmd) |
| { |
| int res; |
| 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_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(ns->ctrl, 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_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(ns->ctrl, &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, no_flush; |
| |
| immed = cmd[1] & 0x01; |
| no_flush = cmd[4] & 0x04; |
| |
| 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; |
| } |
| |
| return 0; |
| } |
| } |
| |
| 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) |
| { |
| if (nvme_ctrl_ready(ns->ctrl)) |
| 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; |
| 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) { |
| res = -ENOMEM; |
| 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); |
| } |