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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-09-19 07:29:24 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-11-13 13:03:54 +0100 |
| commit | bd2bea425e7ff841b0d76748d8106d587a25ec13 (patch) | |
| tree | 5c589933f6966d13652ec09c0c09cc6448c6efcb | |
| parent | NVME(4): Optimize data transfer (diff) | |
| download | rtems-libbsd-bd2bea425e7ff841b0d76748d8106d587a25ec13.tar.bz2 | |
NVME(4): Add SGL descriptor
Update #3821.
| -rw-r--r-- | freebsd/sys/dev/nvme/nvme.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/freebsd/sys/dev/nvme/nvme.h b/freebsd/sys/dev/nvme/nvme.h index 0d4a18b7..27259dc2 100644 --- a/freebsd/sys/dev/nvme/nvme.h +++ b/freebsd/sys/dev/nvme/nvme.h @@ -488,6 +488,20 @@ enum nvme_critical_warning_state { #define NVME_SS_PAGE_SSTAT_GDE_SHIFT (8) #define NVME_SS_PAGE_SSTAT_GDE_MASK (0x1) +/* SGL descriptor field definitions */ +#define NVME_SGL_IDENT_TYPE_DATA_BLOCK (0) +#define NVME_SGL_IDENT_TYPE_BIT_BUCKET (1) +#define NVME_SGL_IDENT_TYPE_SEG_DESC (2) +#define NVME_SGL_IDENT_TYPE_LAST_SEG_DESC (3) +#define NVME_SGL_IDENT_TYPE_KEYED_DATA_BLOCK (4) +#define NVME_SGL_IDENT_TYPE_VENDOR (0xf) +#define NVME_SGL_IDENT_TYPE_SHIFT (4) +#define NVME_SGL_IDENT_TYPE_MASK (0xf) +#define NVME_SGL_IDENT_SUB_TYPE_ADDRESS (0) +#define NVME_SGL_IDENT_SUB_TYPE_OFFSET (0x1) +#define NVME_SGL_IDENT_SUB_TYPE_SHIFT (0) +#define NVME_SGL_IDENT_SUB_TYPE_MASK (0xf) + /* CC register SHN field values */ enum shn_value { NVME_SHN_NORMAL = 0x1, @@ -1451,6 +1465,16 @@ struct nvme_resv_status_ext _Static_assert(sizeof(struct nvme_resv_status_ext) == 64, "bad size for nvme_resv_status_ext"); +struct nvme_sgl_desc +{ + uint64_t address; + uint32_t length; + uint8_t reserved12[3]; + uint8_t sgl_ident; +} __packed __aligned(8); + +_Static_assert(sizeof(struct nvme_sgl_desc) == 16, "bad size for nvme_sgl_desc"); + #define NVME_TEST_MAX_THREADS 128 struct nvme_io_test { |