CVS commit: src/sys/dev/sdmmc

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Sat Dec  6 16:03:40 UTC 2025

Modified Files:
        src/sys/dev/sdmmc: sdmmc_io.c

Log Message:
sdmmc: Use block mode for multi block SDIO transfers.

Change from OpenBSD:
https://github.com/openbsd/src/commit/5e0782b17abc2070c235843e37de911ce3f98ef8

So far the SDIO stack issued one transfer for every 64 byte to be
copied.  This severely limits the speed over the bus.  By using
block mode we can issue block-sized transfers, which bumps the
transfer size to at least 512 bytes.  By using multi-block mode
we can copy up to 511 blocks per transfer.


To generate a diff of this commit:
cvs rdiff -u -r1.21 -r1.22 src/sys/dev/sdmmc/sdmmc_io.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.