From 69cd27e2511616f9b402d1bad4c49f91aa7411a3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 6 Jun 2016 23:20:45 +0200 Subject: [PATCH] nvme.h: add NVM command set SQE/CQE size defines Reviewed-by: Sagi Grimberg Signed-off-by: Christoph Hellwig Reviewed-by: Keith Busch Signed-off-by: Jens Axboe --- include/linux/nvme.h | 11 +++++++++-- 1 file 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, -- 2.30.2