sdio block read cause crc fail about tachyos

[fritzprix]

it was caused due to wrong setting in block length.
my SD card has max read blk length of 10 (1024byte)
but it actually doesn't support that size. instead blk length of 9(512bytes) works fine.

still has some abnormality in reading.
last part(12 bit) of block seems to be not read normally
currently I'm investigating this part

[fritzprix]

Actually it was the problem caused by deselecting device before completion of data transfer.
SDIO data path controller raise DBCKEND flag in STA whenever block transfer is completed with CRC check pass. so there will be 4 DBCKEND interrupt, if 4 blocks of read is requested. however, I implement interrupt handler wrong way. it means that first DBCKEND interrupt wakes up thread and it wakes up before the whole transmission complete and send deselect command to the device.