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Decode Deallocate Logical Block Features.

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MFC after:	1 week
This commit is contained in:
Alexander Motin 2019-05-05 15:47:21 +00:00
parent 78022527bb
commit 1aed499575
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=347158
2 changed files with 25 additions and 1 deletions
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12
sbin/nvmecontrol/identify.c
View File

@ -52,7 +52,7 @@ print_namespace(struct nvme_namespace_data *nsdata)
uint32_t i;
uint32_t lbaf, lbads, ms, rp;
uint8_t thin_prov, ptype;
uint8_t flbas_fmt;
uint8_t flbas_fmt, t;
thin_prov = (nsdata->nsfeat >> NVME_NS_DATA_NSFEAT_THIN_PROV_SHIFT) &
NVME_NS_DATA_NSFEAT_THIN_PROV_MASK;
@ -125,6 +125,16 @@ print_namespace(struct nvme_namespace_data *nsdata)
NVME_NS_DATA_FPI_PERC_MASK);
} else
printf("Not Supported\n");
t = (nsdata->dlfeat >> NVME_NS_DATA_DLFEAT_READ_SHIFT) &
NVME_NS_DATA_DLFEAT_READ_MASK;
printf("Deallocate Logical Block: Read %s%s%s\n",
(t == NVME_NS_DATA_DLFEAT_READ_NR) ? "Not Reported" :
(t == NVME_NS_DATA_DLFEAT_READ_00) ? "00h" :
(t == NVME_NS_DATA_DLFEAT_READ_FF) ? "FFh" : "Unknown",
(nsdata->dlfeat >> NVME_NS_DATA_DLFEAT_DWZ_SHIFT) &
NVME_NS_DATA_DLFEAT_DWZ_MASK ? ", Write Zero" : "",
(nsdata->dlfeat >> NVME_NS_DATA_DLFEAT_GCRC_SHIFT) &
NVME_NS_DATA_DLFEAT_GCRC_MASK ? ", Guard CRC" : "");
printf("Optimal I/O Boundary (LBAs): %u\n", nsdata->noiob);
printf("Globally Unique Identifier: ");
for (i = 0; i < sizeof(nsdata->nguid); i++)

14
sys/dev/nvme/nvme.h
View File

@ -349,6 +349,20 @@
#define NVME_NS_DATA_FPI_SUPP_SHIFT (7)
#define NVME_NS_DATA_FPI_SUPP_MASK (0x1)
/** Deallocate Logical Block Features */
/* deallocated logical block read behavior */
#define NVME_NS_DATA_DLFEAT_READ_SHIFT (0)
#define NVME_NS_DATA_DLFEAT_READ_MASK (0x07)
#define NVME_NS_DATA_DLFEAT_READ_NR (0x00)
#define NVME_NS_DATA_DLFEAT_READ_00 (0x01)
#define NVME_NS_DATA_DLFEAT_READ_FF (0x02)
/* supports the Deallocate bit in the Write Zeroes */
#define NVME_NS_DATA_DLFEAT_DWZ_SHIFT (3)
#define NVME_NS_DATA_DLFEAT_DWZ_MASK (0x01)
/* Guard field for deallocated logical blocks is set to the CRC */
#define NVME_NS_DATA_DLFEAT_GCRC_SHIFT (4)
#define NVME_NS_DATA_DLFEAT_GCRC_MASK (0x01)
/** lba format support */
/* metadata size */
#define NVME_NS_DATA_LBAF_MS_SHIFT (0)