Patch 1 is the block cache implementation.
Patches 2 and 3 update the mmc and sata commands to use the new blk_dread/dwrite/derase routines and can be applied separately.
Notable changes since the V2 RFC patch set include: - renaming of files and routines to use "blkcache" rather than "cache_block" to make things consistent with the command name.
- implemented through the blk_dread/dwrite/derase routines in blk.h instead of drivers/mmc.
- added detection of device (re)initialization in disk/part.c
- changed the default max blocks/entry and entries to 2 and 32 respectively based on further testing.
- changed to sub-command implementation as suggested by Stephen Warren.
- changed interface to cache_find per Stephen's suggestion
I tested with and without DM and compile-tested with CONFIG_BLK enabled, but only on MMC and USB devices.
As a teaser, here are some performance numbers loading a 5MiB file from SD card.
With cache: => blkc max 2 32 changed to max of 32 entries of 2 blocks each => load mmc 0:2 10008000 /usr/lib/libGAL.so 5042083 bytes read in 251 ms (19.2 MiB/s)
Without cache: => blkc max 0 0 changed to max of 0 entries of 0 blocks each => load mmc 0:2 10008000 /usr/lib/libGAL.so 5042083 bytes read in 4638 ms (1 MiB/s)
Eric Nelson (3): drivers: block: add block device cache mmc: force mmc command to go through block layer sata: force sata reads and writes to go through block layer
cmd/mmc.c | 7 +- cmd/sata.c | 6 +- disk/part.c | 2 + drivers/block/Kconfig | 20 ++++ drivers/block/Makefile | 1 + drivers/block/blk-uclass.c | 13 +- drivers/block/blkcache.c | 293 +++++++++++++++++++++++++++++++++++++++++++++ include/blk.h | 79 +++++++++++- 8 files changed, 414 insertions(+), 7 deletions(-) create mode 100644 drivers/block/blkcache.c