diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 22:12:50 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 22:12:50 (GMT) |
commit | 6a398a3ef404e661999cd4c58974cbceb52762e3 (patch) | |
tree | c78ecf3d186beabcd9c1b14d37c871e97b72400f /drivers/block/nvme-scsi.c | |
parent | bfffa1cc9db8a950dd4b1a09999f8a20e69a6652 (diff) | |
parent | 98f57c5196f7a1f681246858f5860c1120d01ca9 (diff) | |
download | linux-6a398a3ef404e661999cd4c58974cbceb52762e3.tar.xz |
Merge branch 'for-4.2/drivers' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"This contains:
- a few race fixes for null_blk, from Akinobu Mita.
- a series of fixes for mtip32xx, from Asai Thambi and Selvan Mani at
Micron.
- NVMe:
* Fix for missing error return on allocation failure, from Axel
Lin.
* Code consolidation and cleanups from Christoph.
* Memory barrier addition, syncing queue count and queue
pointers. From Jon Derrick.
* Various fixes from Keith, an addition to support user
issue reset from sysfs or ioctl, and automatic namespace
rescan.
* Fix from Matias, avoiding losing some request flags when
marking the request failfast.
- small cleanups and sparse fixups for ps3vram. From Geert
Uytterhoeven and Geoff Lavand.
- s390/dasd dead code removal, from Jarod Wilson.
- a set of fixes and optimizations for loop, from Ming Lei.
- conversion to blkdev_reread_part() of loop, dasd, ndb. From Ming
Lei.
- updates to cciss. From Tomas Henzl"
* 'for-4.2/drivers' of git://git.kernel.dk/linux-block: (44 commits)
mtip32xx: Fix accessing freed memory
block: nvme-scsi: Catch kcalloc failure
NVMe: Fix IO for extended metadata formats
nvme: don't overwrite req->cmd_flags on sync cmd
mtip32xx: increase wait time for hba reset
mtip32xx: fix minor number
mtip32xx: remove unnecessary sleep in mtip_ftl_rebuild_poll()
mtip32xx: fix crash on surprise removal of the drive
mtip32xx: Abort I/O during secure erase operation
mtip32xx: fix incorrectly setting MTIP_DDF_SEC_LOCK_BIT
mtip32xx: remove unused variable 'port->allocated'
mtip32xx: fix rmmod issue
MAINTAINERS: Update ps3vram block driver
block/ps3vram: Remove obsolete reference to MTD
block/ps3vram: Fix sparse warnings
NVMe: Automatic namespace rescan
NVMe: Memory barrier before queue_count is incremented
NVMe: add sysfs and ioctl controller reset
null_blk: restart request processing on completion handler
null_blk: prevent timer handler running on a different CPU where started
...
Diffstat (limited to 'drivers/block/nvme-scsi.c')
-rw-r--r-- | drivers/block/nvme-scsi.c | 1230 |
1 files changed, 358 insertions, 872 deletions
diff --git a/drivers/block/nvme-scsi.c b/drivers/block/nvme-scsi.c index 44f2514..e5a63f0 100644 --- a/drivers/block/nvme-scsi.c +++ b/drivers/block/nvme-scsi.c @@ -41,15 +41,13 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/types.h> +#include <asm/unaligned.h> #include <scsi/sg.h> #include <scsi/scsi.h> static int sg_version_num = 30534; /* 2 digits for each component */ -#define SNTI_TRANSLATION_SUCCESS 0 -#define SNTI_INTERNAL_ERROR 1 - /* VPD Page Codes */ #define VPD_SUPPORTED_PAGES 0x00 #define VPD_SERIAL_NUMBER 0x80 @@ -58,49 +56,14 @@ static int sg_version_num = 30534; /* 2 digits for each component */ #define VPD_BLOCK_LIMITS 0xB0 #define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1 -/* CDB offsets */ -#define REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET 6 -#define REPORT_LUNS_SR_OFFSET 2 -#define READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET 10 -#define REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET 4 -#define REQUEST_SENSE_DESC_OFFSET 1 -#define REQUEST_SENSE_DESC_MASK 0x01 -#define DESCRIPTOR_FORMAT_SENSE_DATA_TYPE 1 -#define INQUIRY_EVPD_BYTE_OFFSET 1 -#define INQUIRY_PAGE_CODE_BYTE_OFFSET 2 -#define INQUIRY_EVPD_BIT_MASK 1 -#define INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET 3 -#define START_STOP_UNIT_CDB_IMMED_OFFSET 1 -#define START_STOP_UNIT_CDB_IMMED_MASK 0x1 -#define START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET 3 -#define START_STOP_UNIT_CDB_POWER_COND_MOD_MASK 0xF -#define START_STOP_UNIT_CDB_POWER_COND_OFFSET 4 -#define START_STOP_UNIT_CDB_POWER_COND_MASK 0xF0 -#define START_STOP_UNIT_CDB_NO_FLUSH_OFFSET 4 -#define START_STOP_UNIT_CDB_NO_FLUSH_MASK 0x4 -#define START_STOP_UNIT_CDB_START_OFFSET 4 -#define START_STOP_UNIT_CDB_START_MASK 0x1 -#define WRITE_BUFFER_CDB_MODE_OFFSET 1 -#define WRITE_BUFFER_CDB_MODE_MASK 0x1F -#define WRITE_BUFFER_CDB_BUFFER_ID_OFFSET 2 -#define WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET 3 -#define WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET 6 -#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET 1 -#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK 0xC0 -#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT 6 -#define FORMAT_UNIT_CDB_LONG_LIST_OFFSET 1 -#define FORMAT_UNIT_CDB_LONG_LIST_MASK 0x20 -#define FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET 1 -#define FORMAT_UNIT_CDB_FORMAT_DATA_MASK 0x10 +/* 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 -#define UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET 7 /* Misc. defines */ -#define NIBBLE_SHIFT 4 #define FIXED_SENSE_DATA 0x70 #define DESC_FORMAT_SENSE_DATA 0x72 #define FIXED_SENSE_DATA_ADD_LENGTH 10 @@ -144,27 +107,6 @@ static int sg_version_num = 30534; /* 2 digits for each component */ #define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C #define RESERVED_FIELD 0 -/* SCSI READ/WRITE Defines */ -#define IO_CDB_WP_MASK 0xE0 -#define IO_CDB_WP_SHIFT 5 -#define IO_CDB_FUA_MASK 0x8 -#define IO_6_CDB_LBA_OFFSET 0 -#define IO_6_CDB_LBA_MASK 0x001FFFFF -#define IO_6_CDB_TX_LEN_OFFSET 4 -#define IO_6_DEFAULT_TX_LEN 256 -#define IO_10_CDB_LBA_OFFSET 2 -#define IO_10_CDB_TX_LEN_OFFSET 7 -#define IO_10_CDB_WP_OFFSET 1 -#define IO_10_CDB_FUA_OFFSET 1 -#define IO_12_CDB_LBA_OFFSET 2 -#define IO_12_CDB_TX_LEN_OFFSET 6 -#define IO_12_CDB_WP_OFFSET 1 -#define IO_12_CDB_FUA_OFFSET 1 -#define IO_16_CDB_FUA_OFFSET 1 -#define IO_16_CDB_WP_OFFSET 1 -#define IO_16_CDB_LBA_OFFSET 2 -#define IO_16_CDB_TX_LEN_OFFSET 10 - /* Mode Sense/Select defines */ #define MODE_PAGE_INFO_EXCEP 0x1C #define MODE_PAGE_CACHING 0x08 @@ -179,23 +121,14 @@ static int sg_version_num = 30534; /* 2 digits for each component */ #define MODE_PAGE_INF_EXC_LEN 0x0C #define MODE_PAGE_ALL_LEN 0x54 #define MODE_SENSE6_MPH_SIZE 4 -#define MODE_SENSE6_ALLOC_LEN_OFFSET 4 -#define MODE_SENSE_PAGE_CONTROL_OFFSET 2 #define MODE_SENSE_PAGE_CONTROL_MASK 0xC0 #define MODE_SENSE_PAGE_CODE_OFFSET 2 #define MODE_SENSE_PAGE_CODE_MASK 0x3F -#define MODE_SENSE_LLBAA_OFFSET 1 #define MODE_SENSE_LLBAA_MASK 0x10 #define MODE_SENSE_LLBAA_SHIFT 4 -#define MODE_SENSE_DBD_OFFSET 1 #define MODE_SENSE_DBD_MASK 8 #define MODE_SENSE_DBD_SHIFT 3 #define MODE_SENSE10_MPH_SIZE 8 -#define MODE_SENSE10_ALLOC_LEN_OFFSET 7 -#define MODE_SELECT_CDB_PAGE_FORMAT_OFFSET 1 -#define MODE_SELECT_CDB_SAVE_PAGES_OFFSET 1 -#define MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET 4 -#define MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET 7 #define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10 #define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1 #define MODE_SELECT_6_BD_OFFSET 3 @@ -221,14 +154,11 @@ static int sg_version_num = 30534; /* 2 digits for each component */ #define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07 #define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F #define LOG_PAGE_TEMPERATURE_PAGE 0x0D -#define LOG_SENSE_CDB_SP_OFFSET 1 #define LOG_SENSE_CDB_SP_NOT_ENABLED 0 -#define LOG_SENSE_CDB_PC_OFFSET 2 #define LOG_SENSE_CDB_PC_MASK 0xC0 #define LOG_SENSE_CDB_PC_SHIFT 6 #define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1 #define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F -#define LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET 7 #define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8 #define LOG_INFO_EXCP_PAGE_LENGTH 0xC #define REMAINING_TEMP_PAGE_LENGTH 0xC @@ -278,77 +208,11 @@ static int sg_version_num = 30534; /* 2 digits for each component */ #define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08 #define SCSI_ASCQ_INVALID_LUN_ID 0x09 -/** - * DEVICE_SPECIFIC_PARAMETER in mode parameter header (see sbc2r16) to - * enable DPOFUA support type 0x10 value. - */ -#define DEVICE_SPECIFIC_PARAMETER 0 -#define VPD_ID_DESCRIPTOR_LENGTH sizeof(VPD_IDENTIFICATION_DESCRIPTOR) - -/* MACROs to extract information from CDBs */ - -#define GET_OPCODE(cdb) cdb[0] - -#define GET_U8_FROM_CDB(cdb, index) (cdb[index] << 0) - -#define GET_U16_FROM_CDB(cdb, index) ((cdb[index] << 8) | (cdb[index + 1] << 0)) - -#define GET_U24_FROM_CDB(cdb, index) ((cdb[index] << 16) | \ -(cdb[index + 1] << 8) | \ -(cdb[index + 2] << 0)) - -#define GET_U32_FROM_CDB(cdb, index) ((cdb[index] << 24) | \ -(cdb[index + 1] << 16) | \ -(cdb[index + 2] << 8) | \ -(cdb[index + 3] << 0)) - -#define GET_U64_FROM_CDB(cdb, index) ((((u64)cdb[index]) << 56) | \ -(((u64)cdb[index + 1]) << 48) | \ -(((u64)cdb[index + 2]) << 40) | \ -(((u64)cdb[index + 3]) << 32) | \ -(((u64)cdb[index + 4]) << 24) | \ -(((u64)cdb[index + 5]) << 16) | \ -(((u64)cdb[index + 6]) << 8) | \ -(((u64)cdb[index + 7]) << 0)) - -/* Inquiry Helper Macros */ -#define GET_INQ_EVPD_BIT(cdb) \ -((GET_U8_FROM_CDB(cdb, INQUIRY_EVPD_BYTE_OFFSET) & \ -INQUIRY_EVPD_BIT_MASK) ? 1 : 0) - -#define GET_INQ_PAGE_CODE(cdb) \ -(GET_U8_FROM_CDB(cdb, INQUIRY_PAGE_CODE_BYTE_OFFSET)) - -#define GET_INQ_ALLOC_LENGTH(cdb) \ -(GET_U16_FROM_CDB(cdb, INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET)) - -/* Report LUNs Helper Macros */ -#define GET_REPORT_LUNS_ALLOC_LENGTH(cdb) \ -(GET_U32_FROM_CDB(cdb, REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET)) - -/* Read Capacity Helper Macros */ -#define GET_READ_CAP_16_ALLOC_LENGTH(cdb) \ -(GET_U32_FROM_CDB(cdb, READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET)) - -#define IS_READ_CAP_16(cdb) \ -((cdb[0] == SERVICE_ACTION_IN_16 && cdb[1] == SAI_READ_CAPACITY_16) ? 1 : 0) - -/* Request Sense Helper Macros */ -#define GET_REQUEST_SENSE_ALLOC_LENGTH(cdb) \ -(GET_U8_FROM_CDB(cdb, REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET)) - -/* Mode Sense Helper Macros */ -#define GET_MODE_SENSE_DBD(cdb) \ -((GET_U8_FROM_CDB(cdb, MODE_SENSE_DBD_OFFSET) & MODE_SENSE_DBD_MASK) >> \ -MODE_SENSE_DBD_SHIFT) - -#define GET_MODE_SENSE_LLBAA(cdb) \ -((GET_U8_FROM_CDB(cdb, MODE_SENSE_LLBAA_OFFSET) & \ -MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT) - -#define GET_MODE_SENSE_MPH_SIZE(cdb10) \ -(cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE) - +/* 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. */ @@ -369,8 +233,6 @@ struct nvme_trans_io_cdb { static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from, unsigned long n) { - int res = SNTI_TRANSLATION_SUCCESS; - unsigned long not_copied; int i; void *index = from; size_t remaining = n; @@ -380,29 +242,25 @@ static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from, struct sg_iovec sgl; for (i = 0; i < hdr->iovec_count; i++) { - not_copied = copy_from_user(&sgl, hdr->dxferp + + if (copy_from_user(&sgl, hdr->dxferp + i * sizeof(struct sg_iovec), - sizeof(struct sg_iovec)); - if (not_copied) + sizeof(struct sg_iovec))) return -EFAULT; xfer_len = min(remaining, sgl.iov_len); - not_copied = copy_to_user(sgl.iov_base, index, - xfer_len); - if (not_copied) { - res = -EFAULT; - break; - } + if (copy_to_user(sgl.iov_base, index, xfer_len)) + return -EFAULT; + index += xfer_len; remaining -= xfer_len; if (remaining == 0) break; } - return res; + return 0; } - not_copied = copy_to_user(hdr->dxferp, from, n); - if (not_copied) - res = -EFAULT; - return res; + + if (copy_to_user(hdr->dxferp, from, n)) + return -EFAULT; + return 0; } /* Copy data from userspace memory */ @@ -410,8 +268,6 @@ static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from, static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to, unsigned long n) { - int res = SNTI_TRANSLATION_SUCCESS; - unsigned long not_copied; int i; void *index = to; size_t remaining = n; @@ -421,30 +277,24 @@ static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to, struct sg_iovec sgl; for (i = 0; i < hdr->iovec_count; i++) { - not_copied = copy_from_user(&sgl, hdr->dxferp + + if (copy_from_user(&sgl, hdr->dxferp + i * sizeof(struct sg_iovec), - sizeof(struct sg_iovec)); - if (not_copied) + sizeof(struct sg_iovec))) return -EFAULT; xfer_len = min(remaining, sgl.iov_len); - not_copied = copy_from_user(index, sgl.iov_base, - xfer_len); - if (not_copied) { - res = -EFAULT; - break; - } + if (copy_from_user(index, sgl.iov_base, xfer_len)) + return -EFAULT; index += xfer_len; remaining -= xfer_len; if (remaining == 0) break; } - return res; + return 0; } - not_copied = copy_from_user(to, hdr->dxferp, n); - if (not_copied) - res = -EFAULT; - return res; + if (copy_from_user(to, hdr->dxferp, n)) + return -EFAULT; + return 0; } /* Status/Sense Buffer Writeback */ @@ -452,7 +302,6 @@ static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to, static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key, u8 asc, u8 ascq) { - int res = SNTI_TRANSLATION_SUCCESS; u8 xfer_len; u8 resp[DESC_FMT_SENSE_DATA_SIZE]; @@ -477,25 +326,29 @@ static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key, xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE); hdr->sb_len_wr = xfer_len; if (copy_to_user(hdr->sbp, resp, xfer_len) > 0) - res = -EFAULT; + return -EFAULT; } - return res; + 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 = SNTI_TRANSLATION_SUCCESS; + 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 */ - nvme_sc &= 0x7FF; - - switch (nvme_sc) { + switch (nvme_sc & 0x7FF) { /* Generic Command Status */ case NVME_SC_SUCCESS: status = SAM_STAT_GOOD; @@ -662,8 +515,7 @@ static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc) } res = nvme_trans_completion(hdr, status, sense_key, asc, ascq); - - return res; + return res ? res : nvme_sc; } /* INQUIRY Helper Functions */ @@ -673,10 +525,8 @@ static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns, int alloc_len) { struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ns *id_ns; - int res = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; int xfer_len; u8 resp_data_format = 0x02; @@ -684,31 +534,17 @@ static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns, u8 cmdque = 0x01 << 1; u8 fw_offset = sizeof(dev->firmware_rev); - mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out_dma; - } - /* nvme ns identify - use DPS value for PROTECT field */ - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns); res = nvme_trans_status_code(hdr, nvme_sc); - /* - * If nvme_sc was -ve, res will be -ve here. - * If nvme_sc was +ve, the status would bace been translated, and res - * can only be 0 or -ve. - * - If 0 && nvme_sc > 0, then go into next if where res gets nvme_sc - * - If -ve, return because its a Linux error. - */ if (res) - goto out_free; - if (nvme_sc) { - res = nvme_sc; - goto out_free; - } - id_ns = mem; - (id_ns->dps) ? (protect = 0x01) : (protect = 0); + 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; @@ -725,20 +561,13 @@ static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns, strncpy(&inq_response[32], dev->firmware_rev + fw_offset, 4); xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); - res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); - - out_free: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, - dma_addr); - out_dma: - return res; + 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 res = SNTI_TRANSLATION_SUCCESS; int xfer_len; memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); @@ -752,9 +581,7 @@ static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns, inq_response[9] = INQ_BDEV_LIMITS_PAGE; xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); - res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); - - return res; + return nvme_trans_copy_to_user(hdr, inq_response, xfer_len); } static int nvme_trans_unit_serial_page(struct nvme_ns *ns, @@ -762,7 +589,6 @@ static int nvme_trans_unit_serial_page(struct nvme_ns *ns, int alloc_len) { struct nvme_dev *dev = ns->dev; - int res = SNTI_TRANSLATION_SUCCESS; int xfer_len; memset(inq_response, 0, STANDARD_INQUIRY_LENGTH); @@ -771,53 +597,42 @@ static int nvme_trans_unit_serial_page(struct nvme_ns *ns, strncpy(&inq_response[4], dev->serial, INQ_SERIAL_NUMBER_LENGTH); xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH); - res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); - - return res; + 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; - dma_addr_t dma_addr; - void *mem; - int res = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; int xfer_len; __be32 tmp_id = cpu_to_be32(ns->ns_id); - mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out_dma; - } - memset(inq_response, 0, alloc_len); inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE; /* Page Code */ if (readl(&dev->bar->vs) >= NVME_VS(1, 1)) { - struct nvme_id_ns *id_ns = mem; - void *eui = id_ns->eui64; - int len = sizeof(id_ns->eui64); + struct nvme_id_ns *id_ns; + void *eui; + int len; - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_free; - if (nvme_sc) { - res = nvme_sc; - goto out_free; - } + 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)) + if (bitmap_empty(eui, len * 8)) { + kfree(id_ns); goto scsi_string; + } inq_response[3] = 4 + len; /* Page Length */ /* Designation Descriptor start */ @@ -826,14 +641,14 @@ static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, 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) { - res = nvme_trans_completion(hdr, + return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); - goto out_free; } inq_response[3] = 0x48; /* Page Length */ /* Designation Descriptor start */ @@ -842,30 +657,22 @@ static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, inq_response[6] = 0x00; /* Rsvd */ inq_response[7] = 0x44; /* Designator Length */ - sprintf(&inq_response[8], "%04x", dev->pci_dev->vendor); + 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; - res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); - - out_free: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, - dma_addr); - out_dma: - return res; + 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 = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ctrl *id_ctrl; struct nvme_id_ns *id_ns; int xfer_len; @@ -878,45 +685,32 @@ static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 luiclr = 0x01; inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL); - if (inq_response == NULL) { - res = -ENOMEM; - goto out_mem; - } - - mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out_dma; - } + if (inq_response == NULL) + return -ENOMEM; - /* nvme ns identify */ - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_free; - if (nvme_sc) { - res = nvme_sc; - goto out_free; - } - id_ns = mem; - spt = spt_lut[(id_ns->dpc) & 0x07] << 3; - (id_ns->dps) ? (protect = 0x01) : (protect = 0); + 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 controller identify */ - nvme_sc = nvme_identify(dev, 0, 1, dma_addr); + nvme_sc = nvme_identify_ctrl(dev, &id_ctrl); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_free; - if (nvme_sc) { - res = nvme_sc; - goto out_free; - } - id_ctrl = mem; + 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 */ @@ -932,12 +726,8 @@ static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH); res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len); - out_free: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, - dma_addr); - out_dma: + out_free_inq: kfree(inq_response); - out_mem: return res; } @@ -965,7 +755,7 @@ static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, int alloc_len) { u8 *inq_response; - int res = SNTI_TRANSLATION_SUCCESS; + int res; int xfer_len; inq_response = kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL); @@ -994,7 +784,7 @@ static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, int alloc_len) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int xfer_len; u8 *log_response; @@ -1022,47 +812,30 @@ static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, static int nvme_trans_log_info_exceptions(struct nvme_ns *ns, struct sg_io_hdr *hdr, int alloc_len) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int xfer_len; u8 *log_response; - struct nvme_command c; struct nvme_dev *dev = ns->dev; struct nvme_smart_log *smart_log; - dma_addr_t dma_addr; - void *mem; u8 temp_c; u16 temp_k; log_response = kzalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL); - if (log_response == NULL) { - res = -ENOMEM; - goto out_mem; - } + if (log_response == NULL) + return -ENOMEM; - mem = dma_alloc_coherent(&dev->pci_dev->dev, - sizeof(struct nvme_smart_log), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out_dma; - } + res = nvme_get_log_page(dev, &smart_log); + if (res < 0) + goto out_free_response; - /* Get SMART Log Page */ - memset(&c, 0, sizeof(c)); - c.common.opcode = nvme_admin_get_log_page; - c.common.nsid = cpu_to_le32(0xFFFFFFFF); - c.common.prp1 = cpu_to_le64(dma_addr); - c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) / - BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART); - res = nvme_submit_admin_cmd(dev, &c, NULL); if (res != NVME_SC_SUCCESS) { temp_c = LOG_TEMP_UNKNOWN; } else { - smart_log = mem; temp_k = (smart_log->temperature[1] << 8) + (smart_log->temperature[0]); temp_c = temp_k - KELVIN_TEMP_FACTOR; } + kfree(smart_log); log_response[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE; /* Subpage=0x00, Page Length MSB=0 */ @@ -1078,59 +851,39 @@ static int nvme_trans_log_info_exceptions(struct nvme_ns *ns, xfer_len = min(alloc_len, LOG_INFO_EXCP_PAGE_LENGTH); res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log), - mem, dma_addr); - out_dma: + out_free_response: kfree(log_response); - out_mem: return res; } static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr, int alloc_len) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int xfer_len; u8 *log_response; - struct nvme_command c; struct nvme_dev *dev = ns->dev; struct nvme_smart_log *smart_log; - dma_addr_t dma_addr; - void *mem; u32 feature_resp; u8 temp_c_cur, temp_c_thresh; u16 temp_k; log_response = kzalloc(LOG_TEMP_PAGE_LENGTH, GFP_KERNEL); - if (log_response == NULL) { - res = -ENOMEM; - goto out_mem; - } + if (log_response == NULL) + return -ENOMEM; - mem = dma_alloc_coherent(&dev->pci_dev->dev, - sizeof(struct nvme_smart_log), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out_dma; - } + res = nvme_get_log_page(dev, &smart_log); + if (res < 0) + goto out_free_response; - /* Get SMART Log Page */ - memset(&c, 0, sizeof(c)); - c.common.opcode = nvme_admin_get_log_page; - c.common.nsid = cpu_to_le32(0xFFFFFFFF); - c.common.prp1 = cpu_to_le64(dma_addr); - c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) / - BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART); - res = nvme_submit_admin_cmd(dev, &c, NULL); if (res != NVME_SC_SUCCESS) { temp_c_cur = LOG_TEMP_UNKNOWN; } else { - smart_log = mem; temp_k = (smart_log->temperature[1] << 8) + (smart_log->temperature[0]); temp_c_cur = temp_k - KELVIN_TEMP_FACTOR; } + kfree(smart_log); /* Get Features for Temp Threshold */ res = nvme_get_features(dev, NVME_FEAT_TEMP_THRESH, 0, 0, @@ -1159,11 +912,8 @@ static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr, xfer_len = min(alloc_len, LOG_TEMP_PAGE_LENGTH); res = nvme_trans_copy_to_user(hdr, log_response, xfer_len); - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log), - mem, dma_addr); - out_dma: + out_free_response: kfree(log_response); - out_mem: return res; } @@ -1174,59 +924,45 @@ static int nvme_trans_fill_mode_parm_hdr(u8 *resp, int len, u8 cdb10, u8 llbaa, { /* Quick check to make sure I don't stomp on my own memory... */ if ((cdb10 && len < 8) || (!cdb10 && len < 4)) - return SNTI_INTERNAL_ERROR; + return -EINVAL; if (cdb10) { resp[0] = (mode_data_length & 0xFF00) >> 8; resp[1] = (mode_data_length & 0x00FF); - /* resp[2] and [3] are zero */ + 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[1] and [2] are zero */ + resp[2] = 0x10 /* DPOFUA */; resp[3] = (blk_desc_len & 0x00FF); } - return SNTI_TRANSLATION_SUCCESS; + 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 = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ns *id_ns; u8 flbas; u32 lba_length; if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN) - return SNTI_INTERNAL_ERROR; + return -EINVAL; else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN) - return SNTI_INTERNAL_ERROR; - - mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out; - } + return -EINVAL; - /* nvme ns identify */ - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_dma; - if (nvme_sc) { - res = nvme_sc; - goto out_dma; - } - id_ns = mem; + return res; + flbas = (id_ns->flbas) & 0x0F; lba_length = (1 << (id_ns->lbaf[flbas].ds)); @@ -1246,10 +982,7 @@ static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr, memcpy(&resp[12], &tmp_len, sizeof(u32)); } - out_dma: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, - dma_addr); - out: + kfree(id_ns); return res; } @@ -1258,7 +991,7 @@ static int nvme_trans_fill_control_page(struct nvme_ns *ns, int len) { if (len < MODE_PAGE_CONTROL_LEN) - return SNTI_INTERNAL_ERROR; + return -EINVAL; resp[0] = MODE_PAGE_CONTROL; resp[1] = MODE_PAGE_CONTROL_LEN_FIELD; @@ -1272,78 +1005,69 @@ static int nvme_trans_fill_control_page(struct nvme_ns *ns, resp[9] = 0xFF; /* Bytes 10,11: Extended selftest completion time = 0x0000 */ - return SNTI_TRANSLATION_SUCCESS; + return 0; } static int nvme_trans_fill_caching_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *resp, int len) { - int res = SNTI_TRANSLATION_SUCCESS; + int res = 0; int nvme_sc; struct nvme_dev *dev = ns->dev; u32 feature_resp; u8 vwc; if (len < MODE_PAGE_CACHING_LEN) - return SNTI_INTERNAL_ERROR; + 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) - goto out; - if (nvme_sc) { - res = nvme_sc; - goto out; - } + return res; + vwc = feature_resp & 0x00000001; resp[0] = MODE_PAGE_CACHING; resp[1] = MODE_PAGE_CACHING_LEN_FIELD; resp[2] = vwc << 2; - - out: - return res; + return 0; } static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *resp, int len) { - int res = SNTI_TRANSLATION_SUCCESS; - if (len < MODE_PAGE_POW_CND_LEN) - return SNTI_INTERNAL_ERROR; + return -EINVAL; resp[0] = MODE_PAGE_POWER_CONDITION; resp[1] = MODE_PAGE_POW_CND_LEN_FIELD; /* All other bytes are zero */ - return res; + return 0; } static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *resp, int len) { - int res = SNTI_TRANSLATION_SUCCESS; - if (len < MODE_PAGE_INF_EXC_LEN) - return SNTI_INTERNAL_ERROR; + 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 res; + return 0; } static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *resp, int len) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; u16 mode_pages_offset_1 = 0; u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4; @@ -1353,23 +1077,18 @@ static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr, res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1], MODE_PAGE_CACHING_LEN); - if (res != SNTI_TRANSLATION_SUCCESS) - goto out; + if (res) + return res; res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2], MODE_PAGE_CONTROL_LEN); - if (res != SNTI_TRANSLATION_SUCCESS) - goto out; + 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 != SNTI_TRANSLATION_SUCCESS) - goto out; - res = nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4], + if (res) + return res; + return nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4], MODE_PAGE_INF_EXC_LEN); - if (res != SNTI_TRANSLATION_SUCCESS) - goto out; - - out: - return res; } static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa) @@ -1390,7 +1109,7 @@ static int nvme_trans_mode_page_create(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *, int), u16 mode_pages_tot_len) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int xfer_len; u8 *response; u8 dbd, llbaa; @@ -1399,9 +1118,10 @@ static int nvme_trans_mode_page_create(struct nvme_ns *ns, u16 mode_pages_offset_1; u16 blk_desc_len, blk_desc_offset, mode_data_length; - dbd = GET_MODE_SENSE_DBD(cmd); - llbaa = GET_MODE_SENSE_LLBAA(cmd); - mph_size = GET_MODE_SENSE_MPH_SIZE(cdb10); + 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; @@ -1419,18 +1139,18 @@ static int nvme_trans_mode_page_create(struct nvme_ns *ns, res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10, llbaa, mode_data_length, blk_desc_len); - if (res != SNTI_TRANSLATION_SUCCESS) + 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 != SNTI_TRANSLATION_SUCCESS) + if (res) goto out_free; } res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1], mode_pages_tot_len); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out_free; xfer_len = min(alloc_len, resp_size); @@ -1485,33 +1205,20 @@ static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns, static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 pc, u8 pcmod, u8 start) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ctrl *id_ctrl; int lowest_pow_st; /* max npss = lowest power consumption */ unsigned ps_desired = 0; - /* NVMe Controller Identify */ - mem = dma_alloc_coherent(&dev->pci_dev->dev, - sizeof(struct nvme_id_ctrl), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out; - } - nvme_sc = nvme_identify(dev, 0, 1, dma_addr); + nvme_sc = nvme_identify_ctrl(dev, &id_ctrl); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_dma; - if (nvme_sc) { - res = nvme_sc; - goto out_dma; - } - id_ctrl = mem; + 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: @@ -1551,79 +1258,48 @@ static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr, } nvme_sc = nvme_set_features(dev, NVME_FEAT_POWER_MGMT, ps_desired, 0, NULL); - res = nvme_trans_status_code(hdr, nvme_sc); - if (res) - goto out_dma; - if (nvme_sc) - res = nvme_sc; - out_dma: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem, - dma_addr); - out: - return res; + return nvme_trans_status_code(hdr, nvme_sc); } -/* Write Buffer Helper Functions */ -/* Also using this for Format Unit with hdr passed as NULL, and buffer_id, 0 */ +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; -static int nvme_trans_send_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, + 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 res = SNTI_TRANSLATION_SUCCESS; int nvme_sc; struct nvme_dev *dev = ns->dev; struct nvme_command c; - struct nvme_iod *iod = NULL; - unsigned length; - memset(&c, 0, sizeof(c)); - c.common.opcode = opcode; - if (opcode == nvme_admin_download_fw) { - if (hdr->iovec_count > 0) { - /* Assuming SGL is not allowed for this command */ - res = nvme_trans_completion(hdr, - SAM_STAT_CHECK_CONDITION, - ILLEGAL_REQUEST, - SCSI_ASC_INVALID_CDB, - SCSI_ASCQ_CAUSE_NOT_REPORTABLE); - goto out; - } - iod = nvme_map_user_pages(dev, DMA_TO_DEVICE, - (unsigned long)hdr->dxferp, tot_len); - if (IS_ERR(iod)) { - res = PTR_ERR(iod); - goto out; - } - length = nvme_setup_prps(dev, iod, tot_len, GFP_KERNEL); - if (length != tot_len) { - res = -ENOMEM; - goto out_unmap; - } - - c.dlfw.prp1 = cpu_to_le64(sg_dma_address(iod->sg)); - c.dlfw.prp2 = cpu_to_le64(iod->first_dma); - c.dlfw.numd = cpu_to_le32((tot_len/BYTES_TO_DWORDS) - 1); - c.dlfw.offset = cpu_to_le32(offset/BYTES_TO_DWORDS); - } else if (opcode == nvme_admin_activate_fw) { - u32 cdw10 = buffer_id | NVME_FWACT_REPL_ACTV; - c.common.cdw10[0] = cpu_to_le32(cdw10); + 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); } - nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL); - res = nvme_trans_status_code(hdr, nvme_sc); - if (res) - goto out_unmap; - if (nvme_sc) - res = nvme_sc; - - out_unmap: - if (opcode == nvme_admin_download_fw) { - nvme_unmap_user_pages(dev, DMA_TO_DEVICE, iod); - nvme_free_iod(dev, iod); - } - out: - return res; + 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 */ @@ -1686,7 +1362,7 @@ static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list, static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *mode_page, u8 page_code) { - int res = SNTI_TRANSLATION_SUCCESS; + int res = 0; int nvme_sc; struct nvme_dev *dev = ns->dev; unsigned dword11; @@ -1697,12 +1373,6 @@ static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, nvme_sc = nvme_set_features(dev, NVME_FEAT_VOLATILE_WC, dword11, 0, NULL); res = nvme_trans_status_code(hdr, nvme_sc); - if (res) - break; - if (nvme_sc) { - res = nvme_sc; - break; - } break; case MODE_PAGE_CONTROL: break; @@ -1714,8 +1384,6 @@ static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); - if (!res) - res = SNTI_INTERNAL_ERROR; break; } break; @@ -1723,8 +1391,6 @@ static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr, res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); - if (!res) - res = SNTI_INTERNAL_ERROR; break; } @@ -1735,7 +1401,7 @@ static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd, u16 parm_list_len, u8 pf, u8 sp, u8 cdb10) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; u8 *parm_list; u16 bd_len; u8 llbaa = 0; @@ -1751,7 +1417,7 @@ static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr, } res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out_mem; nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa); @@ -1789,7 +1455,7 @@ static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr, mp_size = parm_list[index + 1] + 2; res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index], page_code); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) break; index += mp_size; } while (index < parm_list_len); @@ -1805,12 +1471,9 @@ static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr, static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns, struct sg_io_hdr *hdr) { - int res = SNTI_TRANSLATION_SUCCESS; + int res = 0; int nvme_sc; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; - struct nvme_id_ns *id_ns; u8 flbas; /* @@ -1821,22 +1484,12 @@ static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns, */ if (ns->mode_select_num_blocks == 0 || ns->mode_select_block_len == 0) { - mem = dma_alloc_coherent(&dev->pci_dev->dev, - sizeof(struct nvme_id_ns), &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out; - } - /* nvme ns identify */ - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + 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) - goto out_dma; - if (nvme_sc) { - res = nvme_sc; - goto out_dma; - } - id_ns = mem; + return res; if (ns->mode_select_num_blocks == 0) ns->mode_select_num_blocks = le64_to_cpu(id_ns->ncap); @@ -1845,18 +1498,17 @@ static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns, ns->mode_select_block_len = (1 << (id_ns->lbaf[flbas].ds)); } - out_dma: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - mem, dma_addr); + + kfree(id_ns); } - out: - return res; + + 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 = SNTI_TRANSLATION_SUCCESS; + int res; u8 *parm_list; u8 pf_usage, pf_code; @@ -1866,7 +1518,7 @@ static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len, goto out; } res = nvme_trans_copy_from_user(hdr, parm_list, len); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out_mem; if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] & @@ -1916,11 +1568,9 @@ static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len, static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 prot_info) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ns *id_ns; u8 i; u8 flbas, nlbaf; @@ -1929,22 +1579,11 @@ static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, struct nvme_command c; /* Loop thru LBAF's in id_ns to match reqd lbaf, put in cdw10 */ - mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out; - } - /* nvme ns identify */ - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_dma; - if (nvme_sc) { - res = nvme_sc; - goto out_dma; - } - id_ns = mem; + return res; + flbas = (id_ns->flbas) & 0x0F; nlbaf = id_ns->nlbaf; @@ -1972,69 +1611,13 @@ static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr, c.format.nsid = cpu_to_le32(ns->ns_id); c.format.cdw10 = cpu_to_le32(cdw10); - nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL); + nvme_sc = nvme_submit_sync_cmd(dev->admin_q, &c, NULL, 0); res = nvme_trans_status_code(hdr, nvme_sc); - if (res) - goto out_dma; - if (nvme_sc) - res = nvme_sc; - out_dma: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, - dma_addr); - out: + kfree(id_ns); return res; } -/* Read/Write Helper Functions */ - -static inline void nvme_trans_get_io_cdb6(u8 *cmd, - struct nvme_trans_io_cdb *cdb_info) -{ - cdb_info->fua = 0; - cdb_info->prot_info = 0; - cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_6_CDB_LBA_OFFSET) & - IO_6_CDB_LBA_MASK; - cdb_info->xfer_len = GET_U8_FROM_CDB(cmd, IO_6_CDB_TX_LEN_OFFSET); - - /* sbc3r27 sec 5.32 - TRANSFER LEN of 0 implies a 256 Block transfer */ - if (cdb_info->xfer_len == 0) - cdb_info->xfer_len = IO_6_DEFAULT_TX_LEN; -} - -static inline void nvme_trans_get_io_cdb10(u8 *cmd, - struct nvme_trans_io_cdb *cdb_info) -{ - cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_10_CDB_FUA_OFFSET) & - IO_CDB_FUA_MASK; - cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_10_CDB_WP_OFFSET) & - IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; - cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_10_CDB_LBA_OFFSET); - cdb_info->xfer_len = GET_U16_FROM_CDB(cmd, IO_10_CDB_TX_LEN_OFFSET); -} - -static inline void nvme_trans_get_io_cdb12(u8 *cmd, - struct nvme_trans_io_cdb *cdb_info) -{ - cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_12_CDB_FUA_OFFSET) & - IO_CDB_FUA_MASK; - cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_12_CDB_WP_OFFSET) & - IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; - cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_12_CDB_LBA_OFFSET); - cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_12_CDB_TX_LEN_OFFSET); -} - -static inline void nvme_trans_get_io_cdb16(u8 *cmd, - struct nvme_trans_io_cdb *cdb_info) -{ - cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_16_CDB_FUA_OFFSET) & - IO_CDB_FUA_MASK; - cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_16_CDB_WP_OFFSET) & - IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT; - cdb_info->lba = GET_U64_FROM_CDB(cmd, IO_16_CDB_LBA_OFFSET); - cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_16_CDB_TX_LEN_OFFSET); -} - static inline u32 nvme_trans_io_get_num_cmds(struct sg_io_hdr *hdr, struct nvme_trans_io_cdb *cdb_info, u32 max_blocks) @@ -2064,11 +1647,8 @@ static u16 nvme_trans_io_get_control(struct nvme_ns *ns, static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, struct nvme_trans_io_cdb *cdb_info, u8 is_write) { - int res = SNTI_TRANSLATION_SUCCESS; - int nvme_sc; - struct nvme_dev *dev = ns->dev; + int nvme_sc = NVME_SC_SUCCESS; u32 num_cmds; - struct nvme_iod *iod; u64 unit_len; u64 unit_num_blocks; /* Number of blocks to xfer in each nvme cmd */ u32 retcode; @@ -2119,45 +1699,20 @@ static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, control = nvme_trans_io_get_control(ns, cdb_info); c.rw.control = cpu_to_le16(control); - iod = nvme_map_user_pages(dev, - (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, - (unsigned long)next_mapping_addr, unit_len); - if (IS_ERR(iod)) { - res = PTR_ERR(iod); - goto out; - } - retcode = nvme_setup_prps(dev, iod, unit_len, GFP_KERNEL); - if (retcode != unit_len) { - nvme_unmap_user_pages(dev, - (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, - iod); - nvme_free_iod(dev, iod); - res = -ENOMEM; - goto out; + if (get_capacity(ns->disk) - unit_num_blocks < + cdb_info->lba + nvme_offset) { + nvme_sc = NVME_SC_LBA_RANGE; + break; } - c.rw.prp1 = cpu_to_le64(sg_dma_address(iod->sg)); - c.rw.prp2 = cpu_to_le64(iod->first_dma); + 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; - - nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL); - if (nvme_sc != NVME_SC_SUCCESS) { - nvme_unmap_user_pages(dev, - (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, - iod); - nvme_free_iod(dev, iod); - res = nvme_trans_status_code(hdr, nvme_sc); - goto out; - } - nvme_unmap_user_pages(dev, - (is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE, - iod); - nvme_free_iod(dev, iod); } - res = nvme_trans_status_code(hdr, NVME_SC_SUCCESS); - out: - return res; + return nvme_trans_status_code(hdr, nvme_sc); } @@ -2166,8 +1721,8 @@ static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; - struct nvme_trans_io_cdb cdb_info; + int res = 0; + struct nvme_trans_io_cdb cdb_info = { 0, }; u8 opcode = cmd[0]; u64 xfer_bytes; u64 sum_iov_len = 0; @@ -2175,27 +1730,52 @@ static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write, int i; size_t not_copied; - /* Extract Fields from CDB */ + /* + * 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: - nvme_trans_get_io_cdb6(cmd, &cdb_info); + 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: - nvme_trans_get_io_cdb10(cmd, &cdb_info); + cdb_info.lba = get_unaligned_be32(&cmd[2]); + cdb_info.xfer_len = get_unaligned_be16(&cmd[7]); break; case WRITE_12: case READ_12: - nvme_trans_get_io_cdb12(cmd, &cdb_info); + cdb_info.lba = get_unaligned_be32(&cmd[2]); + cdb_info.xfer_len = get_unaligned_be32(&cmd[6]); break; case WRITE_16: case READ_16: - nvme_trans_get_io_cdb16(cmd, &cdb_info); + 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 = SNTI_INTERNAL_ERROR; + res = -EIO; goto out; } @@ -2237,7 +1817,7 @@ static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write, /* Send NVMe IO Command(s) */ res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out; out: @@ -2247,15 +1827,15 @@ static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write, static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; + int res = 0; u8 evpd; u8 page_code; int alloc_len; u8 *inq_response; - evpd = GET_INQ_EVPD_BIT(cmd); - page_code = GET_INQ_PAGE_CODE(cmd); - alloc_len = GET_INQ_ALLOC_LENGTH(cmd); + 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); @@ -2316,29 +1896,27 @@ static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr, static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; u16 alloc_len; - u8 sp; u8 pc; u8 page_code; - sp = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_SP_OFFSET); - if (sp != LOG_SENSE_CDB_SP_NOT_ENABLED) { + 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; } - pc = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_PC_OFFSET); - page_code = pc & LOG_SENSE_CDB_PAGE_CODE_MASK; - pc = (pc & LOG_SENSE_CDB_PC_MASK) >> LOG_SENSE_CDB_PC_SHIFT; + + 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_U16_FROM_CDB(cmd, LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET); + 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); @@ -2363,24 +1941,18 @@ static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; u8 cdb10 = 0; u16 parm_list_len; u8 page_format; u8 save_pages; - page_format = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_PAGE_FORMAT_OFFSET); - page_format &= MODE_SELECT_CDB_PAGE_FORMAT_MASK; + page_format = cmd[1] & MODE_SELECT_CDB_PAGE_FORMAT_MASK; + save_pages = cmd[1] & MODE_SELECT_CDB_SAVE_PAGES_MASK; - save_pages = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_SAVE_PAGES_OFFSET); - save_pages &= MODE_SELECT_CDB_SAVE_PAGES_MASK; - - if (GET_OPCODE(cmd) == MODE_SELECT) { - parm_list_len = GET_U8_FROM_CDB(cmd, - MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET); + if (cmd[0] == MODE_SELECT) { + parm_list_len = cmd[4]; } else { - parm_list_len = GET_U16_FROM_CDB(cmd, - MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET); + parm_list_len = cmd[7]; cdb10 = 1; } @@ -2389,42 +1961,36 @@ static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr, * According to SPC-4 r24, a paramter list length field of 0 * shall not be considered an error */ - res = nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len, + return nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len, page_format, save_pages, cdb10); } - return res; + return 0; } static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; + int res = 0; u16 alloc_len; u8 cdb10 = 0; - u8 page_code; - u8 pc; - if (GET_OPCODE(cmd) == MODE_SENSE) { - alloc_len = GET_U8_FROM_CDB(cmd, MODE_SENSE6_ALLOC_LEN_OFFSET); + if (cmd[0] == MODE_SENSE) { + alloc_len = cmd[4]; } else { - alloc_len = GET_U16_FROM_CDB(cmd, - MODE_SENSE10_ALLOC_LEN_OFFSET); + alloc_len = get_unaligned_be16(&cmd[7]); cdb10 = 1; } - pc = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CONTROL_OFFSET) & - MODE_SENSE_PAGE_CONTROL_MASK; - if (pc != MODE_SENSE_PC_CURRENT_VALUES) { + 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; } - page_code = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CODE_OFFSET) & - MODE_SENSE_PAGE_CODE_MASK; - switch (page_code) { + switch (cmd[2] & MODE_SENSE_PAGE_CODE_MASK) { case MODE_PAGE_CACHING: res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len, cdb10, @@ -2467,47 +2033,34 @@ static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, } static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr, - u8 *cmd) + u8 *cmd, u8 cdb16) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; - u32 alloc_len = READ_CAP_10_RESP_SIZE; - u32 resp_size = READ_CAP_10_RESP_SIZE; + u32 alloc_len; + u32 resp_size; u32 xfer_len; - u8 cdb16; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ns *id_ns; u8 *response; - cdb16 = IS_READ_CAP_16(cmd); if (cdb16) { - alloc_len = GET_READ_CAP_16_ALLOC_LENGTH(cmd); + 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; } - mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out; - } - /* nvme ns identify */ - nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr); + nvme_sc = nvme_identify_ns(dev, ns->ns_id, &id_ns); res = nvme_trans_status_code(hdr, nvme_sc); if (res) - goto out_dma; - if (nvme_sc) { - res = nvme_sc; - goto out_dma; - } - id_ns = mem; + return res; response = kzalloc(resp_size, GFP_KERNEL); if (response == NULL) { res = -ENOMEM; - goto out_dma; + goto out_free_id; } nvme_trans_fill_read_cap(response, id_ns, cdb16); @@ -2515,72 +2068,53 @@ static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr, res = nvme_trans_copy_to_user(hdr, response, xfer_len); kfree(response); - out_dma: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem, - dma_addr); - out: + 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 = SNTI_TRANSLATION_SUCCESS; + int res; int nvme_sc; u32 alloc_len, xfer_len, resp_size; - u8 select_report; u8 *response; struct nvme_dev *dev = ns->dev; - dma_addr_t dma_addr; - void *mem; struct nvme_id_ctrl *id_ctrl; u32 ll_length, lun_id; u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET; __be32 tmp_len; - alloc_len = GET_REPORT_LUNS_ALLOC_LENGTH(cmd); - select_report = GET_U8_FROM_CDB(cmd, REPORT_LUNS_SR_OFFSET); - - if ((select_report != ALL_LUNS_RETURNED) && - (select_report != ALL_WELL_KNOWN_LUNS_RETURNED) && - (select_report != RESTRICTED_LUNS_RETURNED)) { - res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, + switch (cmd[2]) { + default: + return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); - goto out; - } else { - /* NVMe Controller Identify */ - mem = dma_alloc_coherent(&dev->pci_dev->dev, - sizeof(struct nvme_id_ctrl), - &dma_addr, GFP_KERNEL); - if (mem == NULL) { - res = -ENOMEM; - goto out; - } - nvme_sc = nvme_identify(dev, 0, 1, dma_addr); + 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) - goto out_dma; - if (nvme_sc) { - res = nvme_sc; - goto out_dma; - } - id_ctrl = mem; + 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_dma; + goto out_free_id; } response = kzalloc(resp_size, GFP_KERNEL); if (response == NULL) { res = -ENOMEM; - goto out_dma; + goto out_free_id; } /* The first LUN ID will always be 0 per the SAM spec */ @@ -2601,24 +2135,21 @@ static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr, res = nvme_trans_copy_to_user(hdr, response, xfer_len); kfree(response); - out_dma: - dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem, - dma_addr); - out: + 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 = SNTI_TRANSLATION_SUCCESS; + int res; u8 alloc_len, xfer_len, resp_size; u8 desc_format; u8 *response; - alloc_len = GET_REQUEST_SENSE_ALLOC_LENGTH(cmd); - desc_format = GET_U8_FROM_CDB(cmd, REQUEST_SENSE_DESC_OFFSET); - desc_format &= REQUEST_SENSE_DESC_MASK; + desc_format = cmd[1] & 0x01; + alloc_len = cmd[4]; resp_size = ((desc_format) ? (DESC_FMT_SENSE_DATA_SIZE) : (FIXED_FMT_SENSE_DATA_SIZE)); @@ -2628,7 +2159,7 @@ static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr, goto out; } - if (desc_format == DESCRIPTOR_FORMAT_SENSE_DATA_TYPE) { + if (desc_format) { /* Descriptor Format Sense Data */ response[0] = DESC_FORMAT_SENSE_DATA; response[1] = NO_SENSE; @@ -2667,95 +2198,58 @@ static int nvme_trans_security_protocol(struct nvme_ns *ns, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); } -static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr, - u8 *cmd) +static int nvme_trans_synchronize_cache(struct nvme_ns *ns, + struct sg_io_hdr *hdr) { - int res = SNTI_TRANSLATION_SUCCESS; int nvme_sc; struct nvme_command c; - u8 immed, pcmod, pc, no_flush, start; - immed = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_IMMED_OFFSET); - pcmod = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET); - pc = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_OFFSET); - no_flush = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_NO_FLUSH_OFFSET); - start = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_START_OFFSET); + memset(&c, 0, sizeof(c)); + c.common.opcode = nvme_cmd_flush; + c.common.nsid = cpu_to_le32(ns->ns_id); - immed &= START_STOP_UNIT_CDB_IMMED_MASK; - pcmod &= START_STOP_UNIT_CDB_POWER_COND_MOD_MASK; - pc = (pc & START_STOP_UNIT_CDB_POWER_COND_MASK) >> NIBBLE_SHIFT; - no_flush &= START_STOP_UNIT_CDB_NO_FLUSH_MASK; - start &= START_STOP_UNIT_CDB_START_MASK; + 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) { - res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, + 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 */ - memset(&c, 0, sizeof(c)); - c.common.opcode = nvme_cmd_flush; - c.common.nsid = cpu_to_le32(ns->ns_id); - - nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL); - res = nvme_trans_status_code(hdr, nvme_sc); + int res = nvme_trans_synchronize_cache(ns, hdr); if (res) - goto out; - if (nvme_sc) { - res = nvme_sc; - goto out; - } + return res; } /* Setup the expected power state transition */ - res = nvme_trans_power_state(ns, hdr, pc, pcmod, start); + return nvme_trans_power_state(ns, hdr, pc, pcmod, start); } - - out: - return res; -} - -static int nvme_trans_synchronize_cache(struct nvme_ns *ns, - struct sg_io_hdr *hdr, u8 *cmd) -{ - int res = SNTI_TRANSLATION_SUCCESS; - int nvme_sc; - struct nvme_command c; - - memset(&c, 0, sizeof(c)); - c.common.opcode = nvme_cmd_flush; - c.common.nsid = cpu_to_le32(ns->ns_id); - - nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL); - - res = nvme_trans_status_code(hdr, nvme_sc); - if (res) - goto out; - if (nvme_sc) - res = nvme_sc; - - out: - return res; } static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; + int res; u8 parm_hdr_len = 0; u8 nvme_pf_code = 0; u8 format_prot_info, long_list, format_data; - format_prot_info = GET_U8_FROM_CDB(cmd, - FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET); - long_list = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_LONG_LIST_OFFSET); - format_data = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET); - - format_prot_info = (format_prot_info & - FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK) >> - FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT; - long_list &= FORMAT_UNIT_CDB_LONG_LIST_MASK; - format_data &= FORMAT_UNIT_CDB_FORMAT_DATA_MASK; + 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) { @@ -2779,16 +2273,16 @@ static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr, if (parm_hdr_len > 0) { res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len, format_prot_info, &nvme_pf_code); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out; } /* Attempt to activate any previously downloaded firmware image */ - res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, 0, 0, 0); + 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 != SNTI_TRANSLATION_SUCCESS) + if (res) goto out; res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code); @@ -2801,28 +2295,24 @@ static int nvme_trans_test_unit_ready(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - int res = SNTI_TRANSLATION_SUCCESS; struct nvme_dev *dev = ns->dev; if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY)) - res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, + return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, NOT_READY, SCSI_ASC_LUN_NOT_READY, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); else - res = nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0); - - return res; + 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 = SNTI_TRANSLATION_SUCCESS; + int res = 0; u32 buffer_offset, parm_list_length; u8 buffer_id, mode; - parm_list_length = - GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET); + 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, @@ -2830,38 +2320,32 @@ static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr, SCSI_ASCQ_CAUSE_NOT_REPORTABLE); goto out; } - buffer_id = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_ID_OFFSET); + 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 = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_MODE_OFFSET) & - WRITE_BUFFER_CDB_MODE_MASK; - buffer_offset = - GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET); + mode = cmd[1] & 0x1f; + buffer_offset = get_unaligned_be24(&cmd[3]); switch (mode) { case DOWNLOAD_SAVE_ACTIVATE: - res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw, + res = nvme_trans_send_download_fw_cmd(ns, hdr, nvme_admin_download_fw, parm_list_length, buffer_offset, buffer_id); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out; - res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, - parm_list_length, buffer_offset, - buffer_id); + res = nvme_trans_send_activate_fw_cmd(ns, hdr, buffer_id); break; case DOWNLOAD_SAVE_DEFER_ACTIVATE: - res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw, + 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_fw_cmd(ns, hdr, nvme_admin_activate_fw, - parm_list_length, buffer_offset, - buffer_id); + res = nvme_trans_send_activate_fw_cmd(ns, hdr, buffer_id); break; default: res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION, @@ -2890,15 +2374,13 @@ struct scsi_unmap_parm_list { static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 *cmd) { - struct nvme_dev *dev = ns->dev; struct scsi_unmap_parm_list *plist; struct nvme_dsm_range *range; struct nvme_command c; - int i, nvme_sc, res = -ENOMEM; + int i, nvme_sc, res; u16 ndesc, list_len; - dma_addr_t dma_addr; - list_len = GET_U16_FROM_CDB(cmd, UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET); + list_len = get_unaligned_be16(&cmd[7]); if (!list_len) return -EINVAL; @@ -2907,7 +2389,7 @@ static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr, return -ENOMEM; res = nvme_trans_copy_from_user(hdr, plist, list_len); - if (res != SNTI_TRANSLATION_SUCCESS) + if (res) goto out; ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4; @@ -2916,10 +2398,11 @@ static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr, goto out; } - range = dma_alloc_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range), - &dma_addr, GFP_KERNEL); - if (!range) + 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)); @@ -2930,15 +2413,14 @@ static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr, memset(&c, 0, sizeof(c)); c.dsm.opcode = nvme_cmd_dsm; c.dsm.nsid = cpu_to_le32(ns->ns_id); - c.dsm.prp1 = cpu_to_le64(dma_addr); c.dsm.nr = cpu_to_le32(ndesc - 1); c.dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD); - nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL); + nvme_sc = nvme_submit_sync_cmd(ns->queue, &c, range, + ndesc * sizeof(*range)); res = nvme_trans_status_code(hdr, nvme_sc); - dma_free_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range), - range, dma_addr); + kfree(range); out: kfree(plist); return res; @@ -2993,13 +2475,16 @@ static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr) retcode = nvme_trans_mode_sense(ns, hdr, cmd); break; case READ_CAPACITY: - retcode = nvme_trans_read_capacity(ns, hdr, cmd); + retcode = nvme_trans_read_capacity(ns, hdr, cmd, 0); break; case SERVICE_ACTION_IN_16: - if (IS_READ_CAP_16(cmd)) - retcode = nvme_trans_read_capacity(ns, hdr, cmd); - else + 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); @@ -3015,7 +2500,7 @@ static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr) retcode = nvme_trans_start_stop(ns, hdr, cmd); break; case SYNCHRONIZE_CACHE: - retcode = nvme_trans_synchronize_cache(ns, hdr, cmd); + retcode = nvme_trans_synchronize_cache(ns, hdr); break; case FORMAT_UNIT: retcode = nvme_trans_format_unit(ns, hdr, cmd); @@ -3053,15 +2538,16 @@ int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr) 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 (retcode > 0) - retcode = SNTI_TRANSLATION_SUCCESS; if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0) return -EFAULT; - - return retcode; + return 0; } int nvme_sg_get_version_num(int __user *ip) |