CVSROOT: /cvs
Module name: src
Changes by: kette...@cvs.openbsd.org 2016/04/30 05:32:23
Modified files:
sys/dev/acpi : sdhc_acpi.c
sys/dev/pci : sdhc_pci.c
sys/dev/sdmmc : sdhc.c sdhcreg.h sdhcvar.h sdmmc.c sdmmc_mem.c
sdmmcchip.h sdmmcvar.h
Log message:
Implement DMA support. Bits and pieces taken from NetBSD, but we only
support ADMA2. The older SDMA mode has too many limitations to be really
usable. Gives us only moderate speed improvements, bus reduces the CPU load
considerably. We will reap the full benefits once we implement wider bus
widths and high speed modes.
There is a remining issue with simultanious use of eMMC and external SD card
on (some) Intel Bay Trail hardware. Still under investigation.
ok patrick@, stsp@, deraadt@
