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nvme.h: add NVM command set SQE/CQE size defines

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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>
This commit is contained in:
Christoph Hellwig 2016-06-06 23:20:45 +02:00 committed by Jens Axboe
parent 725b358836
commit 69cd27e251
1 changed files with 9 additions and 2 deletions
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11
include/linux/nvme.h
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@ -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,