d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Set MMC_DATA_MULTI flag when doing multi-block transfers

Browse Source 
Lower layers (MMC / SDHCI controller drivers) may make certain decisions
based on the presence of this flag. The fact that sdhci.c doesn't
look at this flag is another problem that should be fixed separately.

Found when adding MMCCAM support to AllWinner MMC controller driver
where the presence of this flag actually matters.

Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D15888
This commit is contained in:
kibab 2018-06-19 11:23:48 +00:00
parent 1b6c300c4e
commit ea2b6880ec
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
sys/cam/mmc/mmc_da.c
View File

@ -1778,6 +1778,7 @@ sddastart(struct cam_periph *periph, union ccb *start_ccb)
mmcio->cmd.data->flags = (bp->bio_cmd == BIO_READ ? MMC_DATA_READ : MMC_DATA_WRITE);
/* Direct h/w to issue CMD12 upon completion */
if (count > 1) {
mmcio->cmd.data->flags |= MMC_DATA_MULTI;
mmcio->stop.opcode = MMC_STOP_TRANSMISSION;
mmcio->stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
mmcio->stop.arg = 0;