diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-06-06 23:20:45 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-06-12 07:29:43 -0600 |
| commit | 69cd27e2511616f9b402d1bad4c49f91aa7411a3 (patch) | |
| tree | 5abaa944a77a51e0b50e151e385d5bc96c3c6e54 /include/linux/nvme.h | |
| parent | 725b358836ed038d7d8eafef86330b3a0b3f9c2f (diff) | |
nvme.h: add NVM command set SQE/CQE size defines
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/nvme.h')
| -rw-r--r-- | include/linux/nvme.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 9925b85246d8..9807d98ca93a 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -50,6 +50,13 @@ enum { #define NVME_CMB_CQS(cmbsz) ((cmbsz) & 0x2) #define NVME_CMB_SQS(cmbsz) ((cmbsz) & 0x1) +/* + * Submission and Completion Queue Entry Sizes for the NVM command set. + * (In bytes and specified as a power of two (2^n)). + */ +#define NVME_NVM_IOSQES 6 +#define NVME_NVM_IOCQES 4 + enum { NVME_CC_ENABLE = 1 << 0, NVME_CC_CSS_NVM = 0 << 4, @@ -61,8 +68,8 @@ enum { NVME_CC_SHN_NORMAL = 1 << 14, NVME_CC_SHN_ABRUPT = 2 << 14, NVME_CC_SHN_MASK = 3 << 14, - NVME_CC_IOSQES = 6 << 16, - NVME_CC_IOCQES = 4 << 20, + NVME_CC_IOSQES = NVME_NVM_IOSQES << 16, + NVME_CC_IOCQES = NVME_NVM_IOCQES << 20, NVME_CSTS_RDY = 1 << 0, NVME_CSTS_CFS = 1 << 1, NVME_CSTS_NSSRO = 1 << 4, |