nvme/core: adjust fixed doorbell mmio size#48
Merged
minwooim merged 1 commit intoSamsungDS:mainfrom Jan 18, 2026
Merged
Conversation
If application takes more than 512 sq/cq pairs, @ctrl->doorbells can't simply represent the mmio region since it has fixed size of mmio (0x1000). To support large number of qpairs, calculate the proper mmio doorbell size and map the proper size of it. To do that, &struct nvme_ctrl_opts is used to get the size of the doorbell possible. Signed-off-by: Minwoo Im <minwoo.im@samsung.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
If application takes more than 512 sq/cq pairs, @ctrl->doorbells can't simply represent the mmio region since it has fixed size of mmio (0x1000). To support large number of qpairs, calculate the proper mmio doorbell size and map the proper size of it. To do that, &struct nvme_ctrl_opts is used to get the size of the doorbell possible.