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nvme_cap - Man Page

This field indicates the controller capabilities register

Synopsis

enum nvme_cap {
   NVME_CAP_MQES_SHIFT ,

   NVME_CAP_CQR_SHIFT ,

   NVME_CAP_AMS_SHIFT ,

   NVME_CAP_TO_SHIFT ,

   NVME_CAP_DSTRD_SHIFT ,

   NVME_CAP_NSSRC_SHIFT ,

   NVME_CAP_CSS_SHIFT ,

   NVME_CAP_BPS_SHIFT ,

   NVME_CAP_CPS_SHIFT ,

   NVME_CAP_MPSMIN_SHIFT ,

   NVME_CAP_MPSMAX_SHIFT ,

   NVME_CAP_PMRS_SHIFT ,

   NVME_CAP_CMBS_SHIFT ,

   NVME_CAP_NSSS_SHIFT ,

   NVME_CAP_CRMS_SHIFT ,

   NVME_CAP_MQES_MASK ,

   NVME_CAP_CQR_MASK ,

   NVME_CAP_AMS_MASK ,

   NVME_CAP_TO_MASK ,

   NVME_CAP_DSTRD_MASK ,

   NVME_CAP_NSSRC_MASK ,

   NVME_CAP_CSS_MASK ,

   NVME_CAP_BPS_MASK ,

   NVME_CAP_CPS_MASK ,

   NVME_CAP_MPSMIN_MASK ,

   NVME_CAP_MPSMAX_MASK ,

   NVME_CAP_PMRS_MASK ,

   NVME_CAP_CMBS_MASK ,

   NVME_CAP_NSSS_MASK ,

   NVME_CAP_CRMS_MASK ,

   NVME_CAP_AMS_WRR ,

   NVME_CAP_AMS_VS ,

   NVME_CAP_CSS_NVM ,

   NVME_CAP_CSS_CSI ,

   NVME_CAP_CSS_ADMIN ,

   NVME_CAP_CPS_NONE ,

   NVME_CAP_CPS_CTRL ,

   NVME_CAP_CPS_DOMAIN ,

   NVME_CAP_CPS_NVMS ,

   NVME_CAP_CRWMS ,

   NVME_CAP_CRIMS

};

Constants

NVME_CAP_MQES_SHIFT

Shift amount to get the maximum queue entries supported

NVME_CAP_CQR_SHIFT

Shift amount to get the contiguous queues required

NVME_CAP_AMS_SHIFT

Shift amount to get the arbitration mechanism supported

NVME_CAP_TO_SHIFT

Shift amount to get the timeout

NVME_CAP_DSTRD_SHIFT

Shift amount to get the doorbell stride

NVME_CAP_NSSRC_SHIFT

Shift amount to get the NVM subsystem reset supported

NVME_CAP_CSS_SHIFT

Shift amount to get the command sets supported

NVME_CAP_BPS_SHIFT

Shift amount to get the boot partition support

NVME_CAP_CPS_SHIFT

Shift amount to get the controller power scope

NVME_CAP_MPSMIN_SHIFT

Shift amount to get the memory page size minimum

NVME_CAP_MPSMAX_SHIFT

Shift amount to get the memory page size maximum

NVME_CAP_PMRS_SHIFT

Shift amount to get the persistent memory region supported

NVME_CAP_CMBS_SHIFT

Shift amount to get the controller memory buffer supported

NVME_CAP_NSSS_SHIFT

Shift amount to get the NVM subsystem shutdown supported

NVME_CAP_CRMS_SHIFT

Shift amount to get the controller ready modes supported

NVME_CAP_MQES_MASK

Mask to get the maximum queue entries supported

NVME_CAP_CQR_MASK

Mask to get the contiguous queues required

NVME_CAP_AMS_MASK

Mask to get the arbitration mechanism supported

NVME_CAP_TO_MASK

Mask to get the timeout

NVME_CAP_DSTRD_MASK

Mask to get the doorbell stride

NVME_CAP_NSSRC_MASK

Mask to get the NVM subsystem reset supported

NVME_CAP_CSS_MASK

Mask to get the command sets supported

NVME_CAP_BPS_MASK

Mask to get the boot partition support

NVME_CAP_CPS_MASK

Mask to get the controller power scope

NVME_CAP_MPSMIN_MASK

Mask to get the memory page size minimum

NVME_CAP_MPSMAX_MASK

Mask to get the memory page size maximum

NVME_CAP_PMRS_MASK

Mask to get the persistent memory region supported

NVME_CAP_CMBS_MASK

Mask to get the controller memory buffer supported

NVME_CAP_NSSS_MASK

Mask to get the NVM subsystem shutdown supported

NVME_CAP_CRMS_MASK

Mask to get the controller ready modes supported

NVME_CAP_AMS_WRR

Weighted round robin with urgent priority class

NVME_CAP_AMS_VS

Vendor specific

NVME_CAP_CSS_NVM

NVM command set or a discovery controller

NVME_CAP_CSS_CSI

Controller supports one or more I/O command sets

NVME_CAP_CSS_ADMIN

No I/O command set is supported

NVME_CAP_CPS_NONE

Not reported

NVME_CAP_CPS_CTRL

Controller scope

NVME_CAP_CPS_DOMAIN

Domain scope

NVME_CAP_CPS_NVMS

NVM subsystem scope

NVME_CAP_CRWMS

Controller ready with media support

NVME_CAP_CRIMS

Controller ready independent of media support

Info

enum nvme_cap June 2024 API Manual